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SE537474C2 - System for lubricating and cooling a gearbox and method for controlling a flow of gearbox oil of such a system - Google Patents

System for lubricating and cooling a gearbox and method for controlling a flow of gearbox oil of such a system Download PDF

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Publication number
SE537474C2
SE537474C2 SE1351095A SE1351095A SE537474C2 SE 537474 C2 SE537474 C2 SE 537474C2 SE 1351095 A SE1351095 A SE 1351095A SE 1351095 A SE1351095 A SE 1351095A SE 537474 C2 SE537474 C2 SE 537474C2
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SE
Sweden
Prior art keywords
oil
displacement
electronic control
gearbox
control device
Prior art date
Application number
SE1351095A
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Swedish (sv)
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SE1351095A1 (en
Inventor
Henrik Hagerman
Per Arnelöf
Original Assignee
Scania Cv Ab
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Filing date
Publication date
Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE1351095A priority Critical patent/SE537474C2/en
Priority to PCT/SE2014/051049 priority patent/WO2015041589A1/en
Priority to DE112014003796.6T priority patent/DE112014003796T5/en
Publication of SE1351095A1 publication Critical patent/SE1351095A1/en
Publication of SE537474C2 publication Critical patent/SE537474C2/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0436—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0478—Synchromesh devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2210/00—Applications
    • F16N2210/12—Gearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

SAMMANDRAG System for smorjning och kylning av en vaxellada (1) som är forsedd med synkroniseringskopplingar, vilket system (10) innefattar: - en oljeledning (11) som är ansluten till oljekanaler (12) i vaxella- dan, - en i oljeledningen anordnad oljepump (13) med variabelt deplacement, - en manovreringsanordning (19) for reglering av deplacementet hos oljepumpen, - en elektronisk styranordning (20) for styrning av manovrerings- anordningen, och - en till oljeledningen ansluten kylanordning (14). Nar ett vaxlingsforlopp for byte av vaxel i vaxelladan har initierats eller är avsett att initieras styrs manovreringsanordningen att tem- porart aka deplacementet hos oljepumpen fran en normal till en forhojd deplacementsniva for att astadkomma ett temporart okat volymflode av vaxelladsolja i oljeledningen och oljekanalerna under vaxlingsforloppet och darigenom en temporart okad kyleffekt hos den genom oljekanalerna strommande vaxelladsoljan. Uppfinningen avser aven ett forfarande for styrning av ett flode av vaxelladsolja hos ett sadant system. SUMMARY System for lubrication and cooling of a gearbox (1) provided with synchronizing couplings, which system (10) comprises: - an oil line (11) connected to oil channels (12) in the gearbox, - an oil pump arranged in the oil line (13) with variable displacement, - a maneuvering device (19) for regulating the displacement of the oil pump, - an electronic control device (20) for controlling the maneuvering device, and - a cooling device (14) connected to the oil line. When a shifting process for changing gear in the gearbox has been initiated or is intended to be initiated, the maneuvering device is controlled to accelerate the displacement of the oil pump from a normal to an elevated displacement level to achieve a temporary increased volume flow of gear oil in the oil line and oil flow. a temporarily increased cooling effect of the gear oil flowing through the oil channels. The invention also relates to a method for controlling a flood of gear oil in such a system.

Description

SAMMANDRAG System for smorjning och kylning av en vaxellada (1) som är forsedd med synkroniseringskopplingar, vilket system (10) innefattar: - en oljeledning (11) som är ansluten till oljekanaler (12) i vaxella- dan, - en i oljeledningen anordnad oljepump (13) med variabelt deplacement, - en manovreringsanordning (19) for reglering av deplacementet hos oljepumpen, - en elektronisk styranordning (20) for styrning av manovrerings- anordningen, och - en till oljeledningen ansluten kylanordning (14). SUMMARY System for lubrication and cooling of a gearbox (1) provided with synchronizing couplings, which system (10) comprises: - an oil line (11) connected to oil channels (12) in the gearbox, - an oil pump arranged in the oil line (13) with variable displacement, - a maneuvering device (19) for regulating the displacement of the oil pump, - an electronic control device (20) for controlling the maneuvering device, and - a cooling device (14) connected to the oil line.

Nar ett vaxlingsforlopp for byte av vaxel i vaxelladan har initierats eller är avsett att initieras styrs manovreringsanordningen att tem- porart aka deplacementet hos oljepumpen fran en normal till en forhojd deplacementsniva for att astadkomma ett temporart okat volymflode av vaxelladsolja i oljeledningen och oljekanalerna under vaxlingsforloppet och darigenom en temporart okad kyleffekt hos den genom oljekanalerna strommande vaxelladsoljan. When a shifting process for changing gear in the gearbox has been initiated or is intended to be initiated, the maneuvering device is controlled to accelerate the displacement of the oil pump from a normal to an elevated displacement level to achieve a temporary increased volume flow of gear oil in the oil line and oil flow. a temporarily increased cooling effect of the gear oil flowing through the oil channels.

Uppfinningen avser aven ett forfarande for styrning av ett flode av vaxelladsolja hos ett sadant system. The invention also relates to a method for controlling a flood of gear oil in such a system.

System far smorjninq och kylning av en vaxellada och forfarande far styrning av ett flode av vaxelladsolja hos ett sadant system UPPFINNINGENS OMRADE OCH TIDIGARE TEKNIK Fareliggande uppfinning avser ett system enligt ingressen till patentkravet 1 far smorjning och kylning av en vaxellada som är farsedd med synkroniseringskopplingar samt ett forfarande for styr- ning av ett flode av vaxelladsolja hos ett sadant system. Uppfin- ningen avser aven ett datorprogram och en datorprogramprodukt innefattande datorprogramkod for implementering av ett forfarande enligt uppfinningen, samt en elektronisk styrenhet. FIELD OF THE INVENTION AND PRIOR ART The present invention relates to a system according to the preamble of claim 1 for lubrication and cooling of a gearbox which is provided with synchronizing couplings and synchronizing couplings. method for controlling a flood of gear oil in such a system. The invention also relates to a computer program and a computer program product comprising computer program code for implementing a method according to the invention, as well as an electronic control unit.

For att reducera notningen och darigenom forlanga livslangden hos olika komponenter i en vaxellada smorjs dessa komponenter med hjalp av vaxelladsolja. Oljesystemet hos en vaxellada i ett motorfordon innefattar vanligtvis en oljepump i form av en deplacementspump av rotortyp som ar forbunden med en sidoaxel i vax- elladan for att drivas av denna, varvid oljepumpens pumprotor drivs att rotera med samma varvtal som sidoaxeln. Fran en oljesump i botten av vaxelladan sugs vaxelladsolja upp av oljepumpen for att matas genom oljekanaler i vaxelladan, varefter vaxelladsoljan rinner tillbaka ner i oljesumpen. Vissa typer av vaxellador är forsedda med synkroniseringskopplingar som aktiveras i samband med ett byte av vaxel i vaxelladan for att astadkomma en synkron rotationshastighet has tva komponenter som ska bringas i vridfast ingrepp med varandra vid vaxlingsoperationen. Dessa synkronise- 1 ringskopplingar avger friktionsvarme nar de är aktiva och de be-hover kylas f6r att reducera slitaget och darigenom forlanga livslangden hos synkroniseringskopplingarna. Den erfordrade kylningen av synkroniseringskopplingarna sker med hjalp av den cir- kulerande vaxelladsoljan, vilken bringas att stromma forbi synkro- niseringskopplingarna for att leda bort varme fran dessa. For att forbattra kylformagan hos vaxelladsoljan kan vaxelladsoljan ledas genom en oljekylare innan den leds in i oljekanalerna i vaxelladan. In order to reduce the grouting and thereby prolong the life of various components in a gearbox, these components are lubricated with the help of gearbox oil. The oil system of a gearbox in a motor vehicle usually comprises an oil pump in the form of a rotor-type displacement pump which is connected to a side shaft of the gearbox to be driven by it, the oil pump pump rotor being driven to rotate at the same speed as the side shaft. From an oil sump at the bottom of the gearbox, the gear oil is sucked up by the oil pump to be fed through oil channels in the gearbox, after which the gear oil flows back down into the oil sump. Some types of gearboxes are provided with synchronizing couplings which are activated in connection with a change of gearbox in the gearbox to achieve a synchronous rotational speed having two components which are to be brought into rotationally engaged engagement with each other during the gearing operation. These synchronizing couplings emit frictional heat when they are active and they need to be cooled to reduce wear and thereby extend the life of the synchronizing couplings. The required cooling of the synchronizing couplings takes place with the aid of the circulating gear oil, which is caused to flow past the synchronizing couplings in order to dissipate heat from them. To improve the cooling shape of the transmission oil, the transmission oil can be passed through an oil cooler before it is led into the oil channels in the transmission.

UPPFINNINGENS SYFTE Syftet med foreliggande uppfinning är att astadkomma ett nytt och fordelaktigt satt att styra flodet av vaxelladsolja i en vaxellada som är forsedd med synkroniseringskopplingar. OBJECT OF THE INVENTION The object of the present invention is to provide a new and advantageous way of controlling the flow of gearbox oil in a gearbox which is provided with synchronizing couplings.

SAMMANFATTNING AV UPPFINNINGEN Enligt foreliggande uppfinning uppnas namnda syfte med hjalp av ett system uppvisande de i patentkravet 1 definierade sardragen. SUMMARY OF THE INVENTION According to the present invention, said object is achieved with the aid of a system having the features defined in claim 1.

Det uppfinningsenliga systemet innefattar: - en oljeledning som är ansluten till oljekanaler i vaxelladan f6r att medge vaxelladsolja att matas fran oljeledningen till namnda oljekanaler for smorjning och kylning av lager och synkroniserings- kopplingar inuti vaxelladan, - en oljepump med variabelt deplacement for generering av ett flOde av vaxelladsolja genom oljeledningen i riktning mot namnda oljekanaler, varvid oljepumpen är ansluten till och anordnad att drivas av en sidoaxel i vaxelladan, 2 - en till oljeledningen ansluten kylanordning fOr kylning av vaxelladsoljan, - en manovreringsanordning for reglering av deplacementet hos oljepumpen, och - en elektronisk styranordning for styrning av manovreringsanord- ningen. The system according to the invention comprises: - an oil line connected to oil channels in the gearbox to allow gear oil to be supplied from the oil line to said oil channels for lubrication and cooling of bearings and synchronizing connections inside the gearbox, - an oil pump with variable displacement for generation of gearbox oil through the oil line in the direction of said oil channels, the oil pump being connected to and arranged to be driven by a side shaft in the gearbox, 2 - a cooling device connected to the oil line for cooling the gearbox oil, - a maneuvering device for regulating the displacement of the oil pump, electronic control device for controlling the maneuvering device.

Den elektroniska styranordningen ar anordnad att styra manovreringsanordningen att temporart Oka deplacementet hos oljepumpen fran en normal deplacementsniva till en forhojd deplacements- niva nar den erhaller information som indikerar att ett vaxlingsfor- lopp for byte av vaxel i vaxelladan har initierats eller är avsett att initieras. Deplacementsokningen hos oljepumpen leder till ett ternporart okat volymflode av vaxelladsolja i oljeledningen och i namnda oljekanaler under vaxlingsforloppet, varigenom en tempo- rart okad kyleffekt hos den genom oljekanalerna strommande vaxelladsoljan erhalls under vaxlingsforloppet. Det okade volymflodet av vaxelladsolja under vaxlingsforloppet medfor att vaxelladsoljans formaga att avleda friktionsvarme fran synkroniseringskopplingarna inuti vaxelladan akar, vilket i sin tur ger en forbattrad kyl- ning av synkroniseringskopplingarna och darigenom en okad livs- langd hos dessa. The electronic control device is arranged to control the actuating device to temporarily increase the displacement of the oil pump from a normal displacement level to an increased displacement level when it receives information indicating that a shifting process for changing gear in the gearbox has been initiated or is intended to be initiated. The increase in displacement of the oil pump leads to a ternporart increased volume flow of alternating oil in the oil line and in the said oil channels during the shifting process, whereby a temporarily increased cooling effect of the shifting oil flowing through the oil channels is obtained during the shifting process. The increased volume flow of gearbox oil during the shifting process means that the gearbox oil is able to dissipate frictional heat from the synchronizing couplings inside the gearbox, which in turn provides an improved cooling of the synchronizing couplings and thereby an increased service life of these.

Enligt en utforingsform av uppfinningen är den elektroniska styranordningen anordnad att vid namnda temporara deplacements- okning styra manovreringsanordningen att stalla in deplacementet hos oljepumpen pa en volym som motsvarar ett forutbestamt fast varde. Harigenom kan den uppfinningsenliga losningen implementeras pa ett forhallandevis enkelt satt. 3 Enligt en annan utforingsform av uppfinningen är den elektroniska styranordningen anordnad att vid namnda temporara deplacementsokning styra manovreringsanordningen att stalla in deplacementet hos oljepumpen pa en volym som motsvarar ett borvarde 5 som beraknas av den elektroniska styranordningen utgaende fran en forutbestamd berakningsmodell. Harigenom kan deplacementet hos oljepumpen regleras utgaende fran i forvag faststallda kriterier sa att volymflodet av vaxelladsolja under olika vaxlingsforlopp anpassas i beroende av den kyleffekt som erfordras for respektive 10 vaxlingsforlopp. According to an embodiment of the invention, the electronic control device is arranged to control the maneuvering device at said temporary increase in displacement to set the displacement of the oil pump to a volume corresponding to a predetermined fixed value. As a result, the solution according to the invention can be implemented in a relatively simple manner. According to another embodiment of the invention, the electronic control device is arranged to control the maneuvering device in said temporary displacement search to set the displacement of the oil pump to a volume corresponding to a drilling value calculated by the electronic control device based on a predetermined calculation model. As a result, the displacement of the oil pump can be regulated on the basis of criteria established in advance, so that the volume flow of alternating oil during different alternating processes is adapted depending on the cooling effect required for the respective alternating processes.

Andra fordelaktiga sardrag hos systemet enligt uppfinningen framgar av de osjalvstandiga patentkraven och den nedan foljande beskrivningen. Other advantageous features of the system according to the invention appear from the dependent claims and the following description.

Uppfinningen avser aven ett forfarande uppvisande de i patentkravet 7 definierade sardragen for styrning av ett flode av vaxelladsolja hos ett system for smorjning och kylning av en med synkroniseringskopplingar forsedd vaxellada. The invention also relates to a method having the features defined in claim 7 for controlling a flood of gearbox oil in a system for lubricating and cooling a gearbox provided with synchronizing couplings.

Andra fordelaktiga sardrag hos forfarandet enligt uppfinningen framgar av de osjalvstandiga patentkraven och den nedan foljande beskrivningen. Other advantageous features of the method according to the invention appear from the dependent claims and the following description.

Uppfinningen avser aven ett datorprogram uppvisande de i patent- kravet 13 definierade sardragen, en datorprogramprodukt uppvisande de i patentkravet 14 definierade sardragen och en elektronisk styrenhet uppvisande de i patentkravet 15 definierade sardragen. 4 KORT BESKRIVNING AV RITNINGARNA Uppfinningen kommer i det foljande att narmare beskrivas med hjalp av utforingsexempel, med hanvisning till bifogade ritningar. The invention also relates to a computer program having the features defined in claim 13, a computer program product having the features defined in claim 14 and an electronic control unit having the features defined in claim 15. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail below with the aid of exemplary embodiments, with reference to the accompanying drawings.

Det visas Fig 1en principskiss over ett system enligt en utforingsform av foreliggande uppfinning, Fig 2en principskiss over en elektronisk styrenhet for imple- mentering av ett forfarande enligt uppfinningen, och Fig 3ett flodesdiagram illustrerande ett forfarande enligt en utforingsform av uppfinningen. Fig. 1 is a schematic diagram of a system according to an embodiment of the present invention, Fig. 2 is a schematic diagram of an electronic control unit for implementing a method according to the invention, and Fig. 3 is a flow diagram illustrating a method according to an embodiment of the invention.

DETALJERAD BESKRIVNING AV UTFORINGSFORMER AV UPPFINNINGEN I Fig 1 illustreras mycket schematiskt en vaxellada 1 far ett motor- fordon. Vaxelladan 1 är forsedd med synkroniseringskopplingar 2, 2', 2" av i sig kand typ som styrs av en elektronisk styrenhet 3. DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION Fig. 1 very schematically illustrates a gearbox 1 for a motor vehicle. The gearbox 1 is provided with synchronizing couplings 2, 2 ', 2 "of a per se known type which are controlled by an electronic control unit 3.

Vaxelladan 1 kan exempelvis innefatta ett antal synkroniseringskopplingar 2 som var och en är anordnad for sammankoppling av en roterande axel i vaxelladan 1 med ett kugghjul som är roterbart lagrat pa den aktuella axeln. Nar en sadan synkroniseringskoppling 2 aktiveras av styrenheten 3 i samband med ett vaxlingsforlopp far byte av vaxel i vaxelladan 1 är synkroniseringskopplingen 2 anordnad att astadkomma en synkron rotationshastighet hos en roterande axel och ett pa axeln roterbart lagrat kugghjul innan dessa bringas i vridfast ingrepp med varandra. Namnda axel kan exempelvis utgora en ingaende axeln, en sidoaxel eller en huvudaxel hos vaxelladan 1. The gearbox 1 can for instance comprise a number of synchronizing couplings 2, each of which is arranged for coupling a rotating shaft in the gearbox 1 with a gear which is rotatably mounted on the current shaft. When such a synchronizing clutch 2 is activated by the control unit 3 in connection with a shifting process, the gearbox is changed in the gearbox 1, the synchronizing clutch 2 is arranged to provide a synchronous rotational speed of a rotating shaft and a rotatably mounted gear before these are brought into rotational engagement. Said shaft may, for example, constitute an input shaft, a side shaft or a main shaft of the gearbox 1.

Vaxelladan 1 kan aven innefatta en synkroniseringskoppling 2' som är anordnad for inbordes sammankoppling av en ingaende axel och en huvudaxel hos vaxelladan nar det i samband med ett byte av vaxel i vaxelladan ska upprattas en direkt forbindelse melIan dessa axlar. Nar denna synkroniseringskoppling 2' aktiveras av styrenheten 3 i samband med ett vaxlingsforlopp for byte av vaxel i vaxellklan 1 är synkroniseringskopplingen 2' anordnad att astadkomma en synkron rotationshastighet hos den ingaende axeln och huvudaxeln innan dessa bringas i vridfast ingrepp med varandra. The gearbox 1 can also comprise a synchronizing coupling 2 'which is arranged for inboard connection of an input shaft and a main shaft of the gearbox when a direct connection between these axles is to be established in connection with a change of gear in the gearbox. When this synchronizing clutch 2 'is activated by the control unit 3 in connection with a shifting process for changing gear in the gear clan 1, the synchronizing clutch 2' is arranged to achieve a synchronous rotational speed of the input shaft and the main shaft before they are brought into rotational engagement with each other.

I det fall da vaxelladan 1 innefattar en rangevaxelenhet med en planetvaxel kan vaxelladan 1 aven innefatta en synkroniseringskoppling 2" som är anordnad att verka pa ett ringhjul hos namnda planetvaxel i samband med ett byte av vaxellage i rangevaxelen- heten mellan ett lagrangevaxellage och ett hograngevaxellage. I lagrangevaxellaget är ringhjulet vridfast hopkopplat med ett forsta kopplingsorgan som är vridfast forbundet med vaxelladans vaxellkIshus och i hograngevaxellaget är ringhjulet vridfast hopkopplat med ett andra kopplingsorgan som är vridfast forbundet med vaxelladans huvudaxel. Nar denna synkroniseringskoppling 2" ak- tiveras av styrenheten 3 i samband med ett byte av vaxellage i rangevaxelenheten fran lagrangevaxellaget till hograngevaxellaget är synkroniseringskopplingen 2" anordnad att astadkomma en synkron rotationshastighet hos ringhjulet och namnda andra kopp- lingsorgan innan dessa bringas i vridfast ingrepp med varandra. 6 Nar denna synkroniseringskoppling 2" aktiveras av styrenheten 3 i samband med ett byte av vaxellage i rangevaxelenheten fran hograngevaxellaget till lagrangevaxellaget är synkroniseringskopplingen 2" anordnad att bromsa ringhjulet till stillastbende in- nan ringhjulet bringas i vridfast ingrepp med namnda forsta kopp- lingsorgan. In the case where the gearbox 1 comprises a range gear unit with a planetary gear, the gearbox 1 may also comprise a synchronizing coupling 2 "which is arranged to act on a ring wheel of said planetary gear in connection with a change of gear bearing in the range gear unit between a bearing range shaft shaft and a high range shaft. In the bearing gear shaft the ring gear is rotatably coupled to a first coupling member which is rotatably connected to the gear housing of the gearbox and in the hogran gear shaft the ring gear is rotatably coupled to a second coupling member which is rotatably connected to the main shaft of the gearbox. a change of gear bearing in the range gear unit from the bearing gear shaft layer to the high range gear bearing, the synchronizing clutch 2 "is arranged to provide a synchronous rotational speed of the ring gear and said other coupling means before they are brought into rotational engagement with each other. 6 When this synchronizing clutch 2" is controlled by the control unit 3 in connection with a change of gear bearing in the range gear unit from the high range gear bearing to the bearing range gear bearing, the synchronizing clutch 2 "is arranged to brake the ring gear to a standstill before the ring wheel is brought into torque with said first coupling means.

Vaxelladan 1 uppvisar en ingaende axel 4 som via en kopplingsanordning 5 är anslutbar till en drivaxel 6 hos en drivmotor 7. Med hjalp av kopplingsanordningen 5 kan vaxelladans ingaende axel 4 bringas i kraftoverforande forbindelse med och frankopplas fran namnda drivaxel 6. Drivmotorn 7 kan exempelvis utgoras av en forbranningsmotor. The gearbox 1 has an input shaft 4 which can be connected via a coupling device 5 to a drive shaft 6 of a drive motor 7. With the aid of the coupling device 5 the input shaft 4 of the gearbox can be brought into force-transmitting connection with and disconnected from said drive shaft 6. The drive motor 7 can be of an internal combustion engine.

I Fig 1 illustreras ett system 10 for smorjning och kylning av vax- elladan 1. Detta system 10 innefattar en oljeledning 11 som är ansluten till oljekanaler 12 i vaxelladan for att medge vaxell'adsolja att matas fran oljeledningen 11 till namnda oljekanaler 12 for smorjning och kylning av lager och synkroniseringskopplingar 2, 2', 2" inuti vaxelladan 1. Systemet 10 innefattar vidare en olje- pump 13 for generering av ett flode av vaxelladsolja genom oljeledningen 11 i riktning mot namnda oljekanaler 12. En kylanordning 14 i form av en konventionell oljekylare är ansluten till oljeledningen 11 kir kylning av vaxelladsoljan. Kylanordningen 14 är inkopplad i oljeledningen 11 mellan oljepumpen 13 och namnda oljekanaler 12. En termostat 15 ar anordnad i oljeledningen 11 mellan oljepumpen 13 och kylanordningen 14. I beroende av temperaturen hos den i oljeledningen 11 strommande vaxelladsoljan leder termostaten 15 vaxelladsoljan till kylanordningen 14 for att kylas i denna innan vaxelladsoljan leds vidare till oljekanalerna 12 7 i vaxelladan eller direkt till dessa oljekanaler 12 via en forbikopplingsledning 16 utan passage genom kylanordningen 14. Ett oljefilter 17 av konventionell typ är anordnat i oljeledningen 11 mellan oljepumpen 13 och termostaten 15 for filtrering av den genom ol- jeledningen 11 strommande vaxelladsoljan. En oljesump 18 är anordnad i botten av vaxelladan 1. Fran denna oljesump 18 sugs vaxelladsolja upp av oljepumpen 13 for att matas genom oljeledningen 11. Efter sin passage genom oljekanalerna 12 i vaxelladan 1 rinner vaxelladsoljan tillbaka ner i oljesumpen 18. Fig. 1 illustrates a system 10 for lubricating and cooling the gearbox 1. This system 10 comprises an oil line 11 connected to oil channels 12 in the gearbox to allow gear oil to be fed from the oil line 11 to said oil channels 12 for lubrication and cooling of bearings and synchronizing couplings 2, 2 ', 2 "inside the gearbox 1. The system 10 further comprises an oil pump 13 for generating a flow of gearbox oil through the oil line 11 in the direction of said oil channels 12. A cooling device 14 in the form of a conventional The cooling device 14 is connected in the oil line 11 between the oil pump 13 and said oil ducts 12. A thermostat 15 is arranged in the oil line 11 between the oil pump 13 and the cooling device 14. Depending on the temperature of the oil line 11 flowing the gear oil, the thermostat 15 directs the gear oil to the cooling device 14 to be cooled in it before the gear oil n is passed on to the oil ducts 12 7 in the gearbox or directly to these oil ducts 12 via a bypass line 16 without passage through the cooling device 14. An oil filter 17 of conventional type is arranged in the oil line 11 between the oil pump 13 and the thermostat 15 for filtering it through the oil line 11 flowing gear oil. An oil sump 18 is arranged at the bottom of the gearbox 1. From this oil sump 18, gear oil is sucked up by the oil pump 13 to be fed through the oil line 11. After its passage through the oil channels 12 in the gearbox 1, the gear oil runs back into the oil sump 18.

Oljepumpen 13 innefattar en pumprotor som pa konventionellt satt är ansluten till en sidoaxel 21 i vaxelladan 1 for att drivas av denna. Pumprotorn kommer saledes att rotera med ett varvtal som beror av varvtalet hos sidoaxeln 21. Oljepumpen 13 är en pump med variabelt deplacement och innefattar ett rorligt installnings- element (ej visat) som kan anbringas i olika lagen, varvid oljepumpens deplacement varierar i beroende av laget hos installningselementet. The oil pump 13 comprises a pump rotor which is conventionally connected to a side shaft 21 in the gearbox 1 to be driven therefrom. The pump rotor will thus rotate at a speed which depends on the speed of the side shaft 21. The oil pump 13 is a pump with variable displacement and comprises a movable installation element (not shown) which can be mounted in different layers, the displacement of the oil pump varying depending on the layer at the installation element.

Oljepumpen 13 ar foretradesvis en vingpump med variabelt depla- cement. Hos en vingpump med variabelt deplacement är pumprotorn excentriskt anordnad inuti ett ringformigt installningselement som kan anbringas i olika lagen relativt pumprotorn for reglering av vingpumpens deplacement. Det ringformiga installningsele- mentet kan vara forskjutbart anordnat, sasom exempelvis illustre- ras i US 2012/0093672 Al, eller svangbart anordnat, sasom exempelvis illustreras i US 6 763 797 B1 . 8 Systemet 10 innefattar en manovreringsanordning 19 for reglering av deplacementet hos oljepumpen 13 och en elektronisk styranordning 20 for styrning av manovreringsanordningen. Manovreringsanordningen 19 kan innefatta en hydraulisk eller pneumatisk cylinder for reglering av laget hos oljepumpens installningsele- ment, varvid den elektroniska styranordningen 20 är anordnad att styra matningen av hydraulvatska eller tryckluft till namnda cylinder. Manovreringsanordningen 19 skulle alternativt kunna innefatta en elektrisk motor for reglering av laget hos oljepumpens in- stallningselement, varvid den elektroniska styranordningen 20 ar anordnad att styra matningen av elektrisk strom till namnda motor. The oil pump 13 is preferably a variable displacement vane pump. In a variable displacement vane pump, the pump rotor is arranged eccentrically inside an annular installation element which can be arranged in different layers relative to the pump rotor for regulating the displacement of the vane pump. The annular installation element may be slidably arranged, as illustrated, for example, in US 2012/0093672 A1, or pivotally arranged, as illustrated, for example, in US 6,763,797 B1. The system 10 comprises a maneuvering device 19 for controlling the displacement of the oil pump 13 and an electronic control device 20 for controlling the maneuvering device. The actuating device 19 may comprise a hydraulic or pneumatic cylinder for regulating the layer of the installation elements of the oil pump, the electronic control device 20 being arranged to control the supply of hydraulic fluid or compressed air to said cylinder. The actuating device 19 could alternatively comprise an electric motor for regulating the layer of the installation element of the oil pump, the electronic control device 20 being arranged to control the supply of electric current to said motor.

Den elektroniska styranordningen 20 är anordnad att, exempelvis frail styrenheten 3, mottaga information som indikerar nar ett \fax- lingsforlopp for byte av vaxel i vaxelladan 1 initierats eller är avsett att initieras. The electronic control device 20 is arranged to receive, for example from the control unit 3, information indicating when a faxing process for changing gear in the gearbox 1 has been initiated or is intended to be initiated.

I ett normalfall, nar den elektroniska styranordningen 20 ej mottagit nagon information som indikerar att ett vaxlingsforlopp for byte av vaxel i vaxelladan 1 har initierats eller är avsett att initieras, är den elektroniska styranordningen 20 anordnad att styra manovreringsanordningen 19 att halla deplacementet hos oljepumpen 13 pa en niva som har benamns normal deplacementsniva. In a normal case, when the electronic control device 20 has not received any information indicating that a shifting process for changing gear in the gearbox 1 has been initiated or is intended to be initiated, the electronic control device 20 is arranged to control the maneuvering device 19 to keep the displacement of the oil pump 13 pa a level called normal displacement level.

Nar den elektroniska styranordningen 20 fran styrenheten 3 erhal- ler information som indikerar att ett vaxlingsforlopp for byte av vaxel i vaxelladan 1 har initierats eller är avsett att initieras, är den elektroniska styranordningen 20 anordnad att styra manovreringsanordningen 19 att astadkomma en temporar deplacementsokning hos oljepumpen 13 sã att oljepumpens deplacement temporart 9 akar fran den normala deplacementsnivan till en forhojd deplacementsniva far att pa sa satt astadkomma ett temporart okat volymflode av vaxelladsolja i oljeledningen 11 och i namnda oljekanaler 12 under vaxlingsforloppet och darigenom en temporart okad kyl- effekt hos den genom oljekanalerna 12 strommande vaxelladsoljan. Harigenom erhalls en forbattrad kylning av synkroniseringskopplingarna 2, 2', 2" under vaxlingsforloppet. When the electronic control device 20 from the control unit 3 receives information indicating that a shifting process for changing gear in the gearbox 1 has been initiated or is intended to be initiated, the electronic control device 20 is arranged to control the maneuvering device 19 to effect a temporary displacement increase of the oil pump 13 so that the displacement of the oil pump temporarily 9 increases from the normal displacement level to an increased displacement level, thus causing a temporary increased volume flow of alternating oil in the oil line 11 and in said oil channels 12 during the changeover process and thereby a temporarily increased cooling effect of the oil through flowing gear oil. This results in an improved cooling of the synchronizing couplings 2, 2 ', 2 "during the switching process.

Enligt ett forsta alternativ är den elektroniska styranordningen anordnad att vid namnda temporara deplacementsokning styra manovreringsanordningen 19 att stalla in deplacementet hos oljepumpen 13 pa en volym som motsvarar ett forutbestamt fast varde, vilket med fordel motsvarar det maximala deplacementet hos oljepumpen 13. According to a first alternative, the electronic control device is arranged to control the maneuvering device 19 during said temporary displacement search to set the displacement of the oil pump 13 to a volume corresponding to a predetermined fixed value, which advantageously corresponds to the maximum displacement of the oil pump 13.

Enligt ett andra alternativ är den elektroniska styranordningen 20 anordnad att vid namnda temporara deplacementsokning styra manovreringsanordningen 19 att stalla in deplacementet hos oljepumpen 13 pa en volym som motsvarar ett borvarde V„/, som be- raknas av den elektroniska styranordningen 20 utgaende fran en forutbestamd berakningsmodell. Den elektroniska styranordningen 20 kan exempelvis vara anordnad att faststalla det sistnamnda borvardet Ve,/, enligt foljande formel: /max (N„9 1 — Rsnl I Aleng Rspl' IRsn R1T1 Nmainl)\ vm,,,,vn„m ,vmax Vcctic = min max Dref dar: 10 Vcaic är det beraknade borvardet for deplacementet hos oljepum- pen 13, N„g är varvtalet hos drivmotorns drivaxel 6, 1\1r/win är varvtalet hos vaxelladans huvudaxel, V. är det maximala deplacementet hos oljepumpen 13, V„„m är det normala deplacementet hos oljepumpen 13, R„ ar utvaxlingen hos en i vaxelladan 1 ingaende splitvaxelenhet for den nya vaxel som är avsedd att laggas i under det aktuella vaxlingsforloppet, Rsp är splitvaxelenhetens utvaxling for den senast ilagda vaxeln, är utvaxlingen hos vaxelladans huvudvaxelenhet for den nya vaxel som är avsedd att laggas i under det aktuella vaxlingsforloppet, och D,1 är en forutbestamd referensvarvtalsskillnad, vilken exempelvis kan vara satt till 1000 rpm. According to a second alternative, the electronic control device 20 is arranged to control the maneuvering device 19 at said temporary displacement search 19 to set the displacement of the oil pump 13 to a volume corresponding to a drill value V „/, which is considered by the electronic control device 20 starting from a predetermined calculation model. . The electronic control device 20 may, for example, be arranged to determine the latter drill value Ve, /, according to the following formula: / max (N „9 1 - Rsnl I Aleng Rspl 'IRsn R1T1 Nmainl) \ vm ,,,, vn„ m, vmax Vcctic = min max Drif dar: 10 Vcaic is the calculated bore value for the displacement of the oil pump 13, N „g is the speed of the drive shaft drive shaft 6, 1 \ 1r / win is the speed of the gearbox main shaft, V. is the maximum displacement of the oil pump 13 , V is the normal displacement of the oil pump 13, R is the gear ratio of a split gear unit included in the gearbox 1 for the new gear intended to be engaged during the current gearing process, Rsp is the gear ratio of the split gear unit for the last gear engaged, is the gear ratio of the main gear unit of the gearbox for the new gear intended to be engaged during the current gearing process, and D, 1 is a predetermined reference speed difference, which may, for example, be set to 1000 rpm.

Efter det att den ovan angivna deplacementsokningen verkstallts är den elektroniska styranordningen 20 anordnad att styra manovreringsanordningen 19 att reducera deplacementet hos olje- pumpen 13 fran den forhojda deplacementsnivan till den normala deplacementsnivan nar den elektroniska styranordningen 20 faststallt att ett forutbestamt villkor är uppfyllt. Enligt ett forsta alternativ är den elektroniska styranordningen 20 anordnad att styra manovreringsanordningen 19 att reducera deplacementet hos 0'- jepumpen 13 frail den forhojda deplacementsnivan till den normala deplacementsnivan nar den elektroniska styranordningen 20 faststallt att en given tid forflutit sedan den tidpunkt da den elektroniska styranordningen 20 initierade den temporara deplacementsokningen. Enligt ett andra alternativ ar den elektroniska styranord- 11 ningen 20 anordnad att styra manovreringsanordningen 19 att reducera deplacementet hos oljepumpen 13 fran den forhojda deplacementsnivan till den normala deplacementsnivan nar den elektroniska styranordningen 20 faststallt att det aktuella vaxlingsforlop- pet har slutforts, exempelvis genom att den fran styrenheten 3 er- hallit information som indikerar detta. After the above displacement search is performed, the electronic controller 20 is arranged to control the actuator 19 to reduce the displacement of the oil pump 13 from the elevated displacement level to the normal displacement level when the electronic control device 20 determines that a predetermined condition is met. According to a first alternative, the electronic control device 20 is arranged to control the operating device 19 to reduce the displacement of the 0 'pump 13 from the elevated displacement level to the normal displacement level when the electronic control device 20 has determined that a given time has elapsed since the time the electronic control device 20 initiated the temporary displacement search. According to a second alternative, the electronic control device 20 is arranged to control the actuating device 19 to reduce the displacement of the oil pump 13 from the elevated displacement level to the normal displacement level when the electronic control device 20 has determined that the current shifting process has been completed, for example by from the control unit 3 received information indicating this.

Den ovan angivna elektroniska styranordningen 20 kan vara implementerad medelst en enda elektronisk styrenhet hos motorfor- donet, sasom illustreras i Fig 1. Den elektroniska styranordningen skulle dock alternativt kunna vara implementerad medelst tva eller flera inbordes samverkande elektroniska styrenheter hos motorfordonet. The above-mentioned electronic control device 20 may be implemented by means of a single electronic control unit of the motor vehicle, as illustrated in Fig. 1. However, the electronic control device could alternatively be implemented by means of two or more inboard cooperating electronic control units of the motor vehicle.

I Fig 3 visas ett flodesdiagram som illustrerar en utforingsform av ett forfarande enligt foreliggande uppfinning for styrning av ett flode av vaxelladsolja hos ett system 10 av den ovan beskrivna typen. I ett forsta steg Si faststaller den elektroniska styranordningen 20 huruvida ett vaxlingsforlopp for byte av vaxel i vaxella- dan 1 har initierats. Om den elektroniska styranordningen 20 i steg Si faststallt att nagot vaxlingsforlopp ej har initierats upprepas detta steg Si efter en viss tidsfordrojning. Om den elektroniska styranordningen 20 i steg Si faststallt att ett vaxlingsforlopp har initierats beraknar den elektroniska styranordningen 20 i ett efter- foljande andra steg S2 ett borvarde V„/, for ett forhojt deplacement hos oljepumpen 13. I ett tredje steg S3 styrs manovreringsanordningen 19 av den elektroniska styranordningen 20 att stalla in deplacementet hos oljepumpen 13 pa en volym som motsvarar namnda borvarde Vcca, sa att deplacementet hos oljepumpen 13 12 akar fran en normal deplacementsniva till en forhojd deplacementsniva. I ett fjarde steg S4 faststaller den elektroniska styranordningen 20 huruvida vaxlingsforloppet har slutforts. Om den elektroniska styranordningen 20 i steg S4 faststallt att vaxlingsfor- loppet ej har slutforts upprepas detta steg S4 efter en viss tidsfor- draining. Om den elektroniska styranordningen 20 i steg S4 faststallt att vaxlingsforloppet har slutforts styr den elektroniska styranordningen 20 i ett efterfoljande femte steg S5 manovreringsanordningen 19 att reducera deplacementet hos oljepumpen 13 fran den forhojda deplacementsnivan till den normala deplacementsni- van. Darefter upprepas det ovan namnda forsta steget S1. Fig. 3 shows a flow chart illustrating an embodiment of a method according to the present invention for controlling a flood of gear oil on a system 10 of the type described above. In a first step Si, the electronic control device 20 determines whether a shifting process for changing the gear in the shift part 1 has been initiated. If the electronic control device 20 in step Si determines that no shifting process has been initiated, this step Si is repeated after a certain time delay. If the electronic control device 20 in step S1 determines that a shifting process has been initiated, the electronic control device 20 calculates in a subsequent second step S2 a drilling value V 1 /, for an increased displacement of the oil pump 13. In a third step S3 the maneuvering device 19 is controlled by the electronic control device 20 to set the displacement of the oil pump 13 to a volume corresponding to the drilled value Vcca, so that the displacement of the oil pump 13 12 decreases from a normal displacement level to an increased displacement level. In a fourth step S4, the electronic control device 20 determines whether the shifting process has been completed. If the electronic control device 20 in step S4 has determined that the switching process has not been completed, this step S4 is repeated after a certain time shift. If the electronic control device 20 in step S4 determines that the shifting process has been completed, the electronic control device 20 in a subsequent fifth step S5 controls the actuating device 19 to reduce the displacement of the oil pump 13 from the elevated displacement level to the normal displacement level. Then the above-mentioned first step S1 is repeated.

Datorprogramkod for implementering av ett forfarande enligt uppfinningen är lampligen inkluderad i ett datorprogram som är inlas- ningsbart till internminnet hos en dator, sasom internminnet hos en elektronisk styrenhet hos ett motorfordon. Ett sadant datorprogram är lampligen tillhandahallet via en datorprogramprodukt innefattande ett av en dator lasbart datalagringsmedium, vilket datalagringsmedium har datorprogrammet lagrat darpa. Namnda da- talagringsmedium är exempelvis ett optiskt datalagringsmedium i form av en CD-ROM-skiva, en DVD-skiva etc, ett magnetiskt datalagringsmedium i form av en harddisk, en diskett, ett kassettband etc, eller ett Flashminne eller ett minne av typen ROM, PROM, EPROM eller EEPROM. Computer program code for implementing a method according to the invention is suitably included in a computer program which can be loaded into the internal memory of a computer, such as the internal memory of an electronic control unit of a motor vehicle. Such a computer program is suitably provided via a computer program product comprising a computer-storable data storage medium, which data storage medium has the computer program stored there. Said data storage medium is, for example, an optical data storage medium in the form of a CD-ROM, a DVD disc, etc., a magnetic data storage medium in the form of a hard disk, a floppy disk, a cassette tape, etc., or a flash memory or a ROM type memory. , PROM, EPROM or EEPROM.

Fig 2 illustrerar mycket schematiskt en elektronisk styrenhet 30 innefattande ett exekveringsmedel 31, sasom en central processorenhet (CPU), far exekvering av datorprogramvara. Exekveringsmedlet 31 kommunicerar med ett minne 32, exempelvis av typen RAM, via en databuss 33. Styrenheten 30 innefattar aven 13 datalagringsmedium 34, exempelvis i form av ett Flashminne eller ett minne av typen ROM, PROM, EPROM eller EEPROM. Exekveringsmedlet 31 kommunicerar med datalagringsmediet 34 via databussen 33. Ett datorprogram innefattande datorprogramkod for implementering av ett fOrfarande enligt uppfinningen, exempelvis i enlighet med den i Fig 3 illustrerade utforingsformen, är lagrat pa datalagringsmediet 34. Fig. 2 very schematically illustrates an electronic control unit 30 comprising an execution means 31, such as a central processor unit (CPU), for execution of computer software. The execution means 31 communicates with a memory 32, for example of the RAM type, via a data bus 33. The control unit 30 also comprises 13 data storage medium 34, for example in the form of a Flash memory or a memory of the type ROM, PROM, EPROM or EEPROM. The execution means 31 communicates with the data storage medium 34 via the data bus 33. A computer program comprising computer program code for implementing a method according to the invention, for example in accordance with the embodiment illustrated in Fig. 3, is stored on the data storage medium 34.

Systemet och forfarandet enligt uppfinningen är sarskilt avsedda 10 att anvandas hos ett tungt motorfordon, sasom exempelvis en buss, ett dragfordon eller en lastbil. The system and method of the invention are particularly intended for use with a heavy motor vehicle, such as, for example, a bus, a towing vehicle or a truck.

Uppfinningen är givetvis inte pa nagot satt begransad till de ovan beskrivna utforingsformerna, utan en mangd mojligheter till modi- fikationer darav torde vara uppenbara for en fackman pa omradet, utan att denne f6r den skull avviker fran uppfinningens grundtanke sadan denna definieras i bifogade patentkrav. 14 The invention is of course not limited in any way to the embodiments described above, but a number of possibilities for modifications thereof should be obvious to a person skilled in the art, without the latter deviating from the basic idea of the invention as defined in the appended claims. 14

Claims (15)

PATENTKRAVPATENT REQUIREMENTS 1. System for smorjning och kylning av en vaxellada (1) som ar forsedd med synkroniseringskopplingar (2, 2', 2"), vilket system (10) innefattar: - en oljeledning (11) som ar ansluten till oljekanaler (12) i vaxelladan for att medge vaxelladsolja att matas fran oljeledningen (11) till namnda oljekanaler (12) for smorjning och kylning av lager och synkroniseringskopplingar (2, 2', 2") inuti vaxelladan (1 ), - en oljepump (13) for generering av ett flode av vaxelladsolja genom oljeledningen (11) i riktning mot namnda oljekanaler (12), varvid oljepumpen (13) at- ansluten till och anordnad att drivas av en sidoaxel (21) i vaxelladan (1), och - en till oljeledningen (11) ansluten kylanordning (14) for kylning av vaxelladsoljan, kannetecknat darav: - att oljepumpen (13) ar en pump med variabelt deplacement, - att systemet (10) innefattar en manovreringsanordning (19) for reglering av deplacementet hos oljepumpen (13) och en elektro- nisk styranordning (20) kir styrning av manOvreringsanordningen (19), och - att den elektroniska styranordningen (20), nar den erhaller information som indikerar att ett vaxlingsforlopp kir byte av vaxel i vaxelladan (1) har initierats eller ar avsett att initieras, ar an- ordnad att styra manovreringsanordningen (19) att temporart Oka deplacementet hos oljepumpen (13) fran en normal deplacementsniva till en forhojd deplacementsniva for att pa sa satt astadkomma ett temporart okat volymflode av vaxelladsolja i 01- jeledningen (11) och i namnda oljekanaler (12) under vaxlingsforloppet och darigenom en temporart okad kyleffekt hos den genom oljekanalerna (12) strommande vaxelladsoljan.A system for lubricating and cooling a gearbox (1) provided with synchronizing couplings (2, 2 ', 2 "), which system (10) comprises: - an oil line (11) connected to oil channels (12) in gearbox to allow gear oil to be supplied from the oil line (11) to said oil channels (12) for lubrication and cooling of bearings and synchronizing couplings (2, 2 ', 2 ") inside the gearbox (1), - an oil pump (13) for generating a flow of gearbox oil through the oil line (11) in the direction of said oil channels (12), the oil pump (13) being connected to and arranged to be driven by a side shaft (21) in the gearbox (1), and - one to the oil line (11) ) connected cooling device (14) for cooling the gear oil, characterized in that: - that the oil pump (13) is a variable displacement pump, - that the system (10) comprises a maneuvering device (19) for regulating the displacement of the oil pump (13) and a electronic control device (20) controls the operating device (19), and - that the electronic control device (20), when it receives information indicating that a shifting process for changing gear in the gearbox (1) has been initiated or is intended to be initiated, is arranged to control the maneuvering device (19). ) to temporarily Increase the displacement of the oil pump (13) from a normal displacement level to an increased displacement level in order to thereby create a temporary increased volume flow of gear oil in the 01 line (11) and in said oil channels (12) during the shifting process and thereby a temporary increased cooling effect of the gear oil oil flowing through the oil channels (12). 2. System enligt krav 1, kannetecknat darav, att den elektroniska styranordningen (20) är anordnad att vid namnda temporara deplacementsokning styra manovreringsanordningen (19) att stalla in deplacementet hos oljepumpen (13) p5 en volym som motsvarar ett forutbestamt fast varde.System according to claim 1, characterized in that the electronic control device (20) is arranged to control, during said temporary displacement search, the maneuvering device (19) to set the displacement of the oil pump (13) p5 a volume corresponding to a predetermined fixed value. 3. System enligt krav 2, kannetecknat darav, att namnda fasta varde motsvarar det maximala deplacementet hos oljepumpen (13).A system according to claim 2, characterized in that said fixed value corresponds to the maximum displacement of the oil pump (13). 4. System enligtkrav 1, kannetecknat darav: - att den elektroniska styranordningen (20) är anordnad att berakna ett borvarde (17,a1e) for oljepumpens temporart okade de-placement utgaende fran en forutbestamd berakningsmodell, och - att den elektroniska styranordningen (20) är anordnad att vid namnda temporara deplacementsokning styra manovreringsanordningen (19) att stalla in deplacementet hos oljepumpen (13) p5 en volym som motsvarar namnda beraknade borvarde (Vea/c).System according to claim 1, characterized in that: - that the electronic control device (20) is arranged to calculate a drilling value (17, a1e) for the oil pump's temporarily increased displacement based on a predetermined calculation model, and - that the electronic control device (20) is arranged to, during said temporary displacement search, control the maneuvering device (19) to set the displacement of the oil pump (13) p5 a volume corresponding to said calculated drilling value (Vea / c). 5. System enligt nagot av kraven 1-4, kannetecknat darav, att den elektroniska styranordningen (20) är anordnad att styra manovreringsanordningen (19) att reducera deplacementet hos oljepumpen (13) fran den forhojda deplacementsnivan till den normala deplacementsnivan nar den elektroniska styranord- ningen (20) faststallt att en given tid forflutit sedan den tidpunkt 16 da den elektroniska styranordningen (20) initierade namnda temporara deplacementsokning.System according to any one of claims 1-4, characterized in that the electronic control device (20) is arranged to control the operating device (19) to reduce the displacement of the oil pump (13) from the elevated displacement level to the normal displacement level when the electronic control device determined (20) that a given time has elapsed since the time 16 when the electronic control device (20) initiated said temporary displacement search. 6. System enligt nagot av kraven 1-4, kannetecknat darav, att den elektroniska styranordningen (20) är anordnad att styra ma- novreringsanordningen (19) att reducera deplacementet hos oljepumpen (13) fran den forhojda deplacementsnivan till den normala deplacementsniv6 n nar den elektroniska styranordningen (20) faststallt att vaxlingsforloppet har slutforts.System according to any one of claims 1-4, characterized in that the electronic control device (20) is arranged to control the operating device (19) to reduce the displacement of the oil pump (13) from the elevated displacement level to the normal displacement level when it the electronic control device (20) determines that the shifting process has been completed. 7. Forfarande far styrning av ett flode av vaxelladsolja hos ett system (10) for smorjning och kylning av en med synkroniseringskopplingar (2, 2', 2") forsedd vaxellada (1), dar systemet (10) innefattar: - en oljeledning (11) som är ansluten till oljekanaler (12) i vax- elladan for att medge vaxelladsolja att matas fran oljeledningen (11) till namnda oljekanaler (12) for smorjning och kylning av lager och synkroniseringskopplingar(2, 2', 2") inuti vaxelladan (1 ), - en oljepump (13) for generering av ett flode av vaxelladsolja genom oljeledningen (11) i riktning mot namnda oljekanaler (12), varvid oljepumpen (13) är en pump med variabelt deplacement och är ansluten till och anordnad att drivas av en sidoaxel (21) i vaxelladan (1), - en manovreringsanordning (19) for reglering av deplacemen- tet hos oljepumpen (13), - en elektronisk styranordning (20) for styrning av manovreringsanordningen (19), och - en till oljeledningen (11) ansluten kylanordning (14) for kylning av vaxelladsoljan, 17 varvid forfarandet är kannetecknat darav, att den elektroniska styranordningen (20), nar den erhaller information som indikerar att ett vaxlingsforlopp for byte av vaxel i vaxelladan (1) har initierats eller ar avsett att initieras, styr manOvreringsanord- ningen (19) att temporart aka deplacementet hos oljepumpen (13) fran en normal deplacementsniva till en forhojd deplacementsniva for att pa sa satt astadkomma ett temporart okat volymflode av vaxelladsolja i oljeledningen (11) och i namnda oljekanaler (12) under vaxlingsforloppet och darigenom en tern- porart okad kyleffekt hos den genom oljekanalerna (12) strom- mande vaxelladsoljan.A method of controlling a flood of gear oil in a system (10) for lubricating and cooling a gearbox (1) provided with synchronizing couplings (2, 2 ', 2 "), the system (10) comprising: - an oil line ( 11) which are connected to oil channels (12) in the gearbox to allow gear oil to be fed from the oil line (11) to said oil channels (12) for lubrication and cooling of bearings and synchronizing couplings (2, 2 ', 2 ") inside the gearbox (1), - an oil pump (13) for generating a flood of gearbox oil through the oil line (11) in the direction of said oil channels (12), the oil pump (13) being a variable displacement pump and being connected to and arranged to be operated of a side shaft (21) in the gearbox (1), - a maneuvering device (19) for regulating the displacement of the oil pump (13), - an electronic control device (20) for controlling the maneuvering device (19), and - one for the oil line (11) connected cooling device (14) for cooling the gear oil, 17, the method being characterized in that the electronic control device (20), when it receives information indicating that a shifting process for changing gear in the gearbox (1) has been initiated or is intended to be initiated, controls the operating device (19) to temporarily aka the displacement of the oil pump (13) from a normal displacement level to an elevated displacement level in order to thereby produce a temporary increased volume flow of alternating charge oil in the oil line (11) and in said oil channels (12) during the shifting process and thereby an intermediate increased cooling effect the gear oil oil flowing through the oil channels (12). 8. Forfarande enligt krav 7, kannetecknat darav, att den elektroniska styranordningen (20) vid namnda temporara deplace- mentsokning styr manovreringsanordningen (19) att stalla in deplacementet hos oljepumpen (13) pa en volym som motsvarar ett forutbestamt fast varde.Method according to claim 7, characterized in that the electronic control device (20) during said temporary displacement search controls the maneuvering device (19) to set the displacement of the oil pump (13) to a volume corresponding to a predetermined fixed value. 9. Forfarande enligt krav 8, kannetecknat darav, att namnda fasta varde motsvarar det maximala deplacementet hos oljepumpen (13).A method according to claim 8, characterized in that said fixed value corresponds to the maximum displacement of the oil pump (13). 10. Forfarande enligt krav 7, kannetecknat darav: - att den elektroniska styranordningen (20) beraknar ett 1)&- varde (V./c) fOr oljepumpens temporart okade deplacement ut- gaende fran en forutbestamd berakningsmodell, och - att den elektroniska styranordningen (20) vid namnda temporara deplacementsokning styr manovreringsanordningen (19) att stalla in deplacementet hos oljepumpen (13) pa en volym som motsvarar namnda beraknade borvarde (Vca/c). 18Method according to claim 7, characterized in that: - that the electronic control device (20) calculates a 1) & - value (V./c) for the temporary increased displacement of the oil pump based on a predetermined calculation model, and - that the electronic control device (20) during said temporary displacement search, the actuating device (19) controls to set the displacement of the oil pump (13) to a volume corresponding to said calculated drilling value (Vca / c). 18 11. Forfarande enligt nagot av kraven 7-10, kannetecknat darav, att den elektroniska styranordningen (20) styr manovreringsanordningen (19) att reducera deplacementet hos oljepum- pen (13) fran den forhojda deplacementsnivan till den normala deplacementsnivan nar den elektroniska styranordningen (20) faststallt att en given tid forflutit sedan den tidpunkt da den elektroniska styranordningen (20) initierade namnda temporara deplacementsokning.A method according to any one of claims 7-10, characterized in that the electronic control device (20) controls the actuating device (19) to reduce the displacement of the oil pump (13) from the elevated displacement level to the normal displacement level when the electronic control device (20) ) determined that a given time has elapsed since the time when the electronic control device (20) initiated said temporary displacement search. 12. Forfarande enligt nagot av kraven 7-10, kannetecknat darav, att den elektroniska styranordningen (20) styr manovreringsanordningen (19) att reducera deplacementet hos oljepumpen (13) fran den forhojda deplacementsnivan till den normala deplacementsnivan nar den elektroniska styranordningen (20) faststallt att vaxlingsforloppet har slutforts.A method according to any one of claims 7-10, characterized in that the electronic control device (20) controls the actuating device (19) to reduce the displacement of the oil pump (13) from the elevated displacement level to the normal displacement level when the electronic control device (20) is determined. that the shifting process has been completed. 13. Datorprogram innefattande datorprogramkod for att bringa en dator att implementera ett forfarande enligt nagot av kraven 7-12 nar datorprogrammet exekveras pa datorn.A computer program comprising computer program code for causing a computer to implement a method according to any of claims 7-12 when the computer program is executed on the computer. 14. Datorprogramprodukt innefattande ett datalagringsmedium som är lasbart av en dator, varvid datorprogramkoden hos ett datorprogram enligt krav 13 är lagrad pa datalagringsmediet.A computer program product comprising a computer storage medium readable by a computer, the computer program code of a computer program according to claim 13 being stored on the data storage medium. 15. Elektronisk styrenhet hos ett motorfordon innefattande ett exekveringsmedel (31), ett till exekveringsmedlet anslutet minne (32) och ett till exekveringsmedlet anslutet datalagringsmedium (34), varvid datorprogramkoden hos ett datorprogram enligt krav 13 är lagrad pa namnda datalagringsmedium (34). 19 vz 1,--1 2/2An electronic control unit of a motor vehicle comprising an execution means (31), a memory (32) connected to the execution means and a data storage medium (34) connected to the execution means, the computer program code of a computer program according to claim 13 being stored on said data storage medium (34). 19 vz 1, - 1 2/2
SE1351095A 2013-09-23 2013-09-23 System for lubricating and cooling a gearbox and method for controlling a flow of gearbox oil of such a system SE537474C2 (en)

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SE1351095A SE537474C2 (en) 2013-09-23 2013-09-23 System for lubricating and cooling a gearbox and method for controlling a flow of gearbox oil of such a system
PCT/SE2014/051049 WO2015041589A1 (en) 2013-09-23 2014-09-11 System for lubrication and cooling of a gearbox and method for control of a flow of transmission oil in such a system
DE112014003796.6T DE112014003796T5 (en) 2013-09-23 2014-09-11 System for lubricating and cooling a transmission and method for controlling a flow of transmission oil in such a system

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