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EP1886862A1 - Fuel pump for a combustion engine - Google Patents

Fuel pump for a combustion engine Download PDF

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Publication number
EP1886862A1
EP1886862A1 EP07010760A EP07010760A EP1886862A1 EP 1886862 A1 EP1886862 A1 EP 1886862A1 EP 07010760 A EP07010760 A EP 07010760A EP 07010760 A EP07010760 A EP 07010760A EP 1886862 A1 EP1886862 A1 EP 1886862A1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
internal combustion
housing
bracket
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07010760A
Other languages
German (de)
French (fr)
Other versions
EP1886862B1 (en
Inventor
Albrecht Reustle
Marc Schindler
Jürgen Hawener
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP1886862A1 publication Critical patent/EP1886862A1/en
Application granted granted Critical
Publication of EP1886862B1 publication Critical patent/EP1886862B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/18—Fuel-injection apparatus having means for maintaining safety not otherwise provided for
    • F02M2200/185—Fuel-injection apparatus having means for maintaining safety not otherwise provided for means for improving crash safety

Definitions

  • the invention relates to a pump, in particular a fuel pump, for an internal combustion engine, with a housing according to the closer defined in the preamble of claim 1.
  • a generic fuel pump is from the JP 11210488 A known.
  • the fuel pump is protected by means of a cooling water pipe to prevent noise transmission of the fuel pump into the interior and damage to the fuel pump by impacts due to a collision.
  • the design described therein makes it necessary to use a high-strength material for the cooling water pipe, and there is also the risk that the cooling water pipe is damaged in the event of a crash, causing the vehicle would no longer be functional.
  • the invention at least flush formed with the housing or over the same supernatant bracket provides a very good protection of the pump from the effects of a collision, since it can be made much more stable than the pump itself or as their housing.
  • the bracket can absorb much higher forces than the pump, such as a fuel pump, and thus contributes to the fact that, for example, the pump even in a more violent impact of the same equipped motor vehicle to an obstacle or a collision of another vehicle until remains undamaged at some speed.
  • the present invention is suitable for fuel, cooling water and / or hydraulic pumps, which are used in particular in motor vehicles.
  • the bracket may have a very simple shape and thus a very simple construction, so that it can be produced inexpensively and mounted in a simple manner to the internal combustion engine.
  • Another advantage of the solution according to the invention is the low space requirement, since such a bracket can be easily adapted to the shape of the housing and thus can be accommodated in narrow engine compartments.
  • Fig. 1 shows a highly schematic view of a part of an internal combustion engine 1, which in a conventional manner, a crankcase 2, a cylinder head 3 and a cylinder head cover 4 has.
  • the internal combustion engine 1 is designed in the present case in a boxer design, but it could also be an internal combustion engine 1 in V or series construction.
  • a fuel pump 5 is mounted, by means of several connecting means 6 for attaching a housing 7 of the fuel pump 5 to the internal combustion engine. 1
  • a device 8 is provided on the internal combustion engine 1, which has a bracket 9 which extends substantially orthogonally away from the mounting plane 10 of the fuel pump 5 which is more clearly recognizable in FIG. with "x" direction is at least flush with the housing 7, or, as seen in the present case in Fig. 2, projects beyond the housing 7.
  • existing bracket 9 is formed in the present case U-shaped, whereby it surrounds the housing 7 of the fuel pump 5 at a portion whose circumference, and has a substantially serving for heat shield cover 11, which is substantially parallel extends to the mounting plane 10 and the housing 7 of the fuel pump 5 covers in the x direction.
  • the bracket 9 is attached by means of respective connecting means 12 to the internal combustion engine 1, in particular to the cylinder head 3 and / or cylinder head cover 4 thereof.
  • the connecting means 6 for attaching the housing 7 to the internal combustion engine 1 each have a hole 13 designed as a through hole in a mounting flange 14, a screw 15 and a dashed line shown Tapped hole 16 in the cylinder head 3.
  • the connection means 12 for attaching the bracket 9 to the cylinder head 3 of the internal combustion engine 1 include a bore 17 formed as a through hole in the bracket 9, respective screws 18 extending through the holes 17 and threaded holes 19 in the cylinder head 3, into which engage the screws 18.
  • two of the connecting devices 6 for attaching the housing 7 to the internal combustion engine 1 coincide with two of the connecting devices 12 for attaching the bracket 9 to the internal combustion engine 1.
  • the bracket 9 is attached to the cylinder head 3 of the internal combustion engine 1, that a part of the case of a collision of equipped with the internal combustion engine 1, not shown motor vehicle on the bracket 9 in the direction of the cylinder head 3 force acting on a only shown in dashed lines, in the cylinder head 3 axially mounted camshaft 20 is derived.
  • the forces introduced via the bracket 9 are optimally supported, so that the risk of damage to the fuel pump 5 is further reduced.
  • the shape of the bracket 9, which also contributes significantly to the introduction of force, is shown in Fig. 3 again recognizable.
  • the bracket 9 has a relatively small, defined in particular by manufacturing tolerances distance to the cylinder head cover 4, so that it can deform in the event of a collision and a corresponding force and supported on the cylinder head cover 4.
  • the cylinder head 3 takes on corresponding, introduced via the bracket 9 forces, so that the fuel pump 5 is supported.
  • the introduction of force into the cylinder head 3 or in the camshaft 20 in addition to the structural design of the bracket 9 and the materials used by the arrangement de connecting means 12 of the bracket 9 is determined.
  • the invention relates to a fuel pump 5 for an internal combustion engine 1 with a housing 7, with at least one connecting device 6 for attachment of the housing 7 on the internal combustion engine 1 and with a device 8 for protecting the fuel pump 5 against damage, in particular in the event of a collision.
  • the device 8 for protecting the fuel pump 5 has a bracket 9, which is attached to the internal combustion engine 1 by means of respective connecting devices 12 and is formed at least flush with the housing 7 in a direction x extending away from the mounting plane of the fuel pump 5 on the internal combustion engine 1 the housing 7 protrudes.
  • the bracket 9 can be made much more stable than the fuel pump 5 itself or as the housing 7 and thereby provides protection of the fuel pump 5 from the effects of a collision.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The pump has a connecting device for mounting a housing (7) at an internal-combustion engine (1). A protection device (8) is provided for the protection of the pump from damages. The protection device has a bracket (9) that is attached to the internal combustion engine by using connecting devices (12). The connecting devices are flushed with the housing in a path extending direction from an attaching level of the pump to the internal combustion engine. The housing and the bracket are attached to a cylinder head (3) of the internal-combustion engine.

Description

Die Erfindung betrifft eine Pumpe, insbesondere eine Kraftstoffpumpe, für eine Brennkraftmaschine, mit einem Gehäuse nach der im Oberbegriff von Anspruch 1 näher definierten Art.The invention relates to a pump, in particular a fuel pump, for an internal combustion engine, with a housing according to the closer defined in the preamble of claim 1.

Eine gattungsgemäße Kraftstoffpumpe ist aus der JP 11210488 A bekannt. Hierbei wird die Kraftstoffpumpe mittels einer Kühlwasserleitung geschützt, um Geräuschübertragungen der Kraftstoffpumpe in den Innenraum sowie eine Beschädigung der Kraftstoffpumpe durch Stoßeinwirkungen in Folge einer Kollision zu verhindern. Die dort beschriebene Konstruktion macht es jedoch erforderlich, ein hochfestes Material für die Kühlwasserleitung zu verwenden, und es besteht außerdem die Gefahr, dass die Kühlwasserleitung im Crashfall beschädigt wird, wodurch das Fahrzeug nicht mehr funktionstüchtig wäre.A generic fuel pump is from the JP 11210488 A known. Here, the fuel pump is protected by means of a cooling water pipe to prevent noise transmission of the fuel pump into the interior and damage to the fuel pump by impacts due to a collision. The design described therein, however, makes it necessary to use a high-strength material for the cooling water pipe, and there is also the risk that the cooling water pipe is damaged in the event of a crash, causing the vehicle would no longer be functional.

In der EP 1 132 612 A1 ist eine Kraftstoffpumpe für eine direkteinspritzende Brennkraftmaschine beschrieben, die nach hinten geneigt ist, um sie vor eventuellen Crasheinwirkungen zu schützen. Eine derartige Konstruktion erfordert jedoch einen sehr großen Bauraum, wie er im Motorraum von mit modernen Brennkraftmaschinen ausgestatteten Kraftfahrzeugen meist nicht vorhanden ist. Außerdem bietet eine derartige Konstruktion nur einen sehr geringen Schutz der Kraftstoffpumpe vor Unfalleinwirkungen.In the EP 1 132 612 A1 is described a fuel pump for a direct-injection internal combustion engine, which is tilted backwards, in order to protect against possible Crasheinwirkungen. However, such a construction requires a very large amount of space, as it is usually not available in the engine compartment of motor vehicles equipped with modern internal combustion engines. In addition, such a construction offers only a very low protection of the fuel pump against accidental effects.

Es ist daher Aufgabe der vorliegenden Erfindung, eine Pumpe für eine Brennkraftmaschine mit einer Einrichtung zum Schutz derselben vor Krafteinwirkungen zu schaffen, die einen geringen Bauraum beansprucht, eine einfache Konstruktion und einen geringen damit verbundenen Herstellungsaufwand aufweist und einen sicheren Schutz für die Pumpe auch im Falle einer größeren Krafteinwirkung bei einer Kollision bietet.It is therefore an object of the present invention to provide a pump for an internal combustion engine with a device for protecting the same from the effects of force, which takes up little space, has a simple construction and a low associated production costs and safe protection for the pump even in the case offers a greater force in a collision.

Erfindungsgemäß wird diese Aufgabe durch die in Anspruch 1 genannten Merkmale gelöst.According to the invention, this object is achieved by the features mentioned in claim 1.

Der erfindungsgemäße, zumindest bündig mit dem Gehäuse ausgebildete oder über dasselbe überstehende Bügel bietet einen sehr guten Schutz der Pumpe vor den Einwirkungen einer Kollision, da er sehr viel stabiler ausgeführt werden kann als die Pumpe selbst bzw. als deren Gehäuse. Hierdurch kann der Bügel sehr viel höhere Kräfte aufnehmen als die Pumpe, beispielsweise eine Kraftstoffpumpe, und trägt auf diese Weise dazu bei, dass z.B. die Pumpe auch bei einem heftigeren Aufprall des mit derselben ausgestatteten Kraftfahrzeugs auf ein Hindernis oder bei einem Aufprall eines anderen Fahrzeugs bis zu einer gewissen Geschwindigkeit unbeschädigt bleibt. Die vorliegende Erfindung eignet sich für Kraftstoff-, Kühlwasser- und/oder Hydraulikpumpen, die insbesondere in Kraftfahrzeugen eingesetzt werden. Dies ist insbesondere bei Kraftfahrzeugen vorteilhaft, bei denen die Brennkraftmaschine im Heck oder im Frontraum eingebaut ist und bei denen z.B. im Crashfall eine höhere Gefahr der Beschädigung der Kraftstoffpumpe gegeben ist. Selbstverständlich kann die erfindungsgemäße Pumpe jedoch auch bei anderen Kraftfahrzeugen eingesetzt werden.The invention, at least flush formed with the housing or over the same supernatant bracket provides a very good protection of the pump from the effects of a collision, since it can be made much more stable than the pump itself or as their housing. As a result, the bracket can absorb much higher forces than the pump, such as a fuel pump, and thus contributes to the fact that, for example, the pump even in a more violent impact of the same equipped motor vehicle to an obstacle or a collision of another vehicle until remains undamaged at some speed. The present invention is suitable for fuel, cooling water and / or hydraulic pumps, which are used in particular in motor vehicles. This is particularly advantageous in motor vehicles in which the internal combustion engine is installed in the rear or in the front compartment and in which, for example, in the event of a crash, a higher risk of damaging the fuel pump is given. Of course, however, the pump according to the invention can also be used in other motor vehicles.

Hierbei kann der Bügel eine sehr einfache Form und damit eine sehr einfache Konstruktion aufweisen, so dass er kostengünstig hergestellt und in einfacher Weise an der Brennkraftmaschine angebracht werden kann. Ein weiterer Vorteil der erfindungsgemäßen Lösung besteht in dem geringen Bauraumbedarf, da ein solcher Bügel sehr einfach an die Form des Gehäuses angepasst und somit auch in engen Motorräumen untergebracht werden kann.Here, the bracket may have a very simple shape and thus a very simple construction, so that it can be produced inexpensively and mounted in a simple manner to the internal combustion engine. Another advantage of the solution according to the invention is the low space requirement, since such a bracket can be easily adapted to the shape of the housing and thus can be accommodated in narrow engine compartments.

In einer vorteilhaften Weiterbildung der Erfindung kann vorgesehen sein, dass zumindest eine der Verbindungseinrichtungen zum Anbringen des Bügels an der BrennkraftmaschineIn an advantageous embodiment of the invention can be provided that at least one of the connecting means for attaching the bracket to the internal combustion engine

mit einer der Verbindungseinrichtungen zum Anbringen des Gehäuses an der Brennkraftmaschine zusammenfällt. Auf diese Weise kann zum einen die Anzahl der Verbindungselemente und zum anderen der Umfang der mechanischen Bearbeitung reduziert werden.coincides with one of the connecting means for attaching the housing to the internal combustion engine. In this way, on the one hand, the number of fasteners and, on the other hand, the amount of mechanical processing can be reduced.

Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den restlichen Unteransprüchen. Nachfolgend ist ein Ausführungsbeispiel der Erfindung anhand der Zeichnung prinzipmäßig dargestellt.Further advantageous embodiments and modifications of the invention will become apparent from the remaining dependent claims. Hereinafter, an embodiment of the invention with reference to the drawing is shown in principle.

Es zeigen:

Fig. 1
eine Vorderansicht einer Kraftstoffpumpe mit einem dieselbe teilweise umgebenden, erfindungsgemäßen Bügel;
Fig. 2
eine Ansicht gemäß dem Pfeil II aus Fig. 1; und
Fig. 3
eine detailliertere Darstellung des Bügels.
Show it:
Fig. 1
a front view of a fuel pump with the same partially surrounding, bow according to the invention;
Fig. 2
a view according to the arrow II of Fig. 1; and
Fig. 3
a more detailed representation of the temple.

Fig. 1 zeigt in einer stark schematisierten Ansicht einen Teil einer Brennkraftmaschine 1, welche in an sich bekannter Weise ein Kurbelgehäuse 2, einen Zylinderkopf 3 und einen Zylinderkopfdeckel 4 aufweist. Die Brennkraftmaschine 1 ist im vorliegenden Fall in Boxer-Bauweise ausgeführt, es könnte sich jedoch auch um eine Brennkraftmaschine 1 in V- oder Reihenbauweise handeln. An der Brennkraftmaschine 1, im vorliegenden Fall an dem Zylinderkopf 3, ist eine Kraftstoffpumpe 5 angebracht, und zwar mittels mehrerer Verbindungseinrichtungen 6 zur Anbringung eines Gehäuses 7 der Kraftstoffpumpe 5 an der Brennkraftmaschine 1.Fig. 1 shows a highly schematic view of a part of an internal combustion engine 1, which in a conventional manner, a crankcase 2, a cylinder head 3 and a cylinder head cover 4 has. The internal combustion engine 1 is designed in the present case in a boxer design, but it could also be an internal combustion engine 1 in V or series construction. On the internal combustion engine 1, in the present case on the cylinder head 3, a fuel pump 5 is mounted, by means of several connecting means 6 for attaching a housing 7 of the fuel pump 5 to the internal combustion engine. 1

Zum Schutz der Kraftstoffpumpe 5 vor Krafteinflüssen ist an der Brennkraftmaschine 1 eine Einrichtung 8 vorgesehen, die einen Bügel 9 aufweist, der in einer sich von der in Fig. 2 besser erkennbaren Anbringebene 10 der Kraftstoffpumpe 5 an der Brennkraftmaschine 1 im wesentlichen orthogonal weg erstreckenden, mit "x" bezeichneten Richtung zumindest bündig mit dem Gehäuse 7 ist, oder, wie im vorliegenden Fall in Fig. 2 erkennbar, über das Gehäuse 7 übersteht. Der beispielsweise aus Stahl, Aluminium oder einem Faserverbundwerkstoff, wie z. B. einem CFK-Verbundwerkstoff, bestehende Bügel 9 ist im vorliegenden Fall U-förmig ausgebildet, wodurch er das Gehäuse 7 der Kraftstoffpumpe 5 an einem Teil deren Umfangs umgibt, und weist einen im wesentlichen zur Hitzeabschirmung dienenden Deckel 11 auf, der im wesentlichen parallel zu der Anbringebene 10 verläuft und das Gehäuse 7 der Kraftstoffpumpe 5 in x-Richtung abdeckt.In order to protect the fuel pump 5 against the influence of force, a device 8 is provided on the internal combustion engine 1, which has a bracket 9 which extends substantially orthogonally away from the mounting plane 10 of the fuel pump 5 which is more clearly recognizable in FIG. with "x" direction is at least flush with the housing 7, or, as seen in the present case in Fig. 2, projects beyond the housing 7. The example of steel, aluminum or a fiber composite material such. As a CFRP composite, existing bracket 9 is formed in the present case U-shaped, whereby it surrounds the housing 7 of the fuel pump 5 at a portion whose circumference, and has a substantially serving for heat shield cover 11, which is substantially parallel extends to the mounting plane 10 and the housing 7 of the fuel pump 5 covers in the x direction.

Auch der Bügel 9 ist mittels jeweiliger Verbindungseinrichtungen 12 an der Brennkraftmaschine 1, insbesondere an dem Zylinderkopf 3 und/oder Zylinderkopfdeckel 4 derselben, angebracht. Die Verbindungseinrichtungen 6 zur Anbringung des Gehäuses 7 an der Brennkraftmaschine 1 weisen jeweils eine als Durchgangsbohrung ausgeführte Bohrung 13 in einem Befestigungsflansch 14, eine Schraube 15 und eine nur gestrichelt dargestellte Gewindebohrung 16 in dem Zylinderkopf 3 auf. In ähnlicher Weise beinhalten auch die Verbindungseinrichtungen 12 zur Anbringung des Bügels 9 an dem Zylinderkopf 3 der Brennkraftmaschine 1 eine als Durchgangsbohrung ausgebildete Bohrung 17 in dem Bügel 9, jeweilige, durch die Bohrungen 17 verlaufende Schrauben 18 und Gewindebohrungen 19 in dem Zylinderkopf 3, in die die Schrauben 18 eingreifen. Im dargestellten Ausführungsbeispiel fallen zwei der Verbindungseinrichtungen 6 zum Anbringen des Gehäuses 7 an der Brennkraftmaschine 1 mit zwei der Verbindungseinrichtungen 12 zum Anbringen des Bügels 9 an der Brennkraftmaschine 1 zusammen. Dies bedeutet, dass die jeweilige Schraube 18 und die zugehörige Gewindebohrung 19 entfällt und dass die Bohrung 17 in dem Bügel 9 mit der jeweiligen Bohrung 13 in dem Befestigungsflansch 14 fluchtet, sodass mittels der Schrauben 15 sowohl der Bügel 9 als auch der Befestigungsflansch 14 und die daran angebrachte Kraftstoffpumpe 5 an der Brennkraftmaschine 1 befestigt wird. Im vorliegenden Fall ist der Bügel 9 so an dem Zylinderkopf 3 der Brennkraftmaschine 1 angebracht, dass ein Teil der im Falle einer Kollision des mit der Brennkraftmaschine 1 ausgestatteten, nicht dargestellten Kraftfahrzeugs auf den Bügel 9 in Richtung auf den Zylinderkopf 3 einwirkenden Kraft über eine nur gestrichelt dargestellte, in dem Zylinderkopf 3 axial gelagerte Nockenwelle 20 abgeleitet wird. Dadurch werden die über den Bügel 9 eingeleiteten Kräfte optimal abgestützt, so dass die Gefahr von Beschädigungen der Kraftstoffpumpe 5 weiter verringert wird. Die Form des Bügels 9, die ebenfalls wesentlich zu der Krafteinleitung beiträgt, ist in Fig. 3 nochmals erkennbar.Also, the bracket 9 is attached by means of respective connecting means 12 to the internal combustion engine 1, in particular to the cylinder head 3 and / or cylinder head cover 4 thereof. The connecting means 6 for attaching the housing 7 to the internal combustion engine 1 each have a hole 13 designed as a through hole in a mounting flange 14, a screw 15 and a dashed line shown Tapped hole 16 in the cylinder head 3. Similarly, the connection means 12 for attaching the bracket 9 to the cylinder head 3 of the internal combustion engine 1 include a bore 17 formed as a through hole in the bracket 9, respective screws 18 extending through the holes 17 and threaded holes 19 in the cylinder head 3, into which engage the screws 18. In the exemplary embodiment shown, two of the connecting devices 6 for attaching the housing 7 to the internal combustion engine 1 coincide with two of the connecting devices 12 for attaching the bracket 9 to the internal combustion engine 1. This means that the respective screw 18 and the associated threaded hole 19 is omitted and that the bore 17 is aligned in the bracket 9 with the respective bore 13 in the mounting flange 14, so that by means of the screws 15, both the bracket 9 and the mounting flange 14 and attached thereto fuel pump 5 is attached to the internal combustion engine 1. In the present case, the bracket 9 is attached to the cylinder head 3 of the internal combustion engine 1, that a part of the case of a collision of equipped with the internal combustion engine 1, not shown motor vehicle on the bracket 9 in the direction of the cylinder head 3 force acting on a only shown in dashed lines, in the cylinder head 3 axially mounted camshaft 20 is derived. As a result, the forces introduced via the bracket 9 are optimally supported, so that the risk of damage to the fuel pump 5 is further reduced. The shape of the bracket 9, which also contributes significantly to the introduction of force, is shown in Fig. 3 again recognizable.

Der Bügel 9 weist einen relativ geringen, insbesondere durch Fertigungstoleranzen definierten Abstand zu dem Zylinderkopfdeckel 4 auf, so dass er sich im Falle einer Kollision und einer entsprechenden Krafteinwirkung verformen und an dem Zylinderkopfdeckel 4 abstützen kann. Selbstverständlich nimmt auch der Zylinderkopf 3 entsprechende, über den Bügel 9 eingeleitete Kräfte auf, so dass die Kraftstoffpumpe 5 gestützt wird. In diesem Zusammenhang wird die Krafteinleitung in den Zylinderkopf 3 bzw. in die Nockenwellen 20 neben der konstruktiven Ausgestaltung des Bügels 9 und der verwendeten Materialien durch die Anordnung de Verbindungseinrichtungen 12 des Bügels 9 bestimmt.The bracket 9 has a relatively small, defined in particular by manufacturing tolerances distance to the cylinder head cover 4, so that it can deform in the event of a collision and a corresponding force and supported on the cylinder head cover 4. Of course, the cylinder head 3 takes on corresponding, introduced via the bracket 9 forces, so that the fuel pump 5 is supported. In this context, the introduction of force into the cylinder head 3 or in the camshaft 20 in addition to the structural design of the bracket 9 and the materials used by the arrangement de connecting means 12 of the bracket 9 is determined.

Die Erfindung betrifft eine Kraftstoffpumpe 5 für eine Brennkraftmaschine 1 mit einem Gehäuse 7, mit wenigstens einer Verbindungseinrichtung 6 zur Anbringung des Gehäuses 7 an der Brennkraftmaschine 1 und mit einer Einrichtung 8 zum Schutz der Kraftstoffpumpe 5 vor Beschädigungen, insbesondere im Falle einer Kollision. Die Einrichtung 8 zum Schutz der Kraftstoffpumpe 5 einen mittels jeweiliger Verbindungseinrichtungen 12 an der Brennkraftmaschine 1 angebrachten Bügel 9 aufweist, der in einer sich von der Anbringebene der Kraftstoffpumpe 5 an der Brennkraftmaschine 1 weg erstreckenden Richtung x zumindest bündig mit dem Gehäuse 7 ausgebildet ist oder über das Gehäuse 7 übersteht. Der Bügel 9 kann sehr viel stabiler ausgeführt werden als die Kraftstoffpumpe 5 selbst bzw. als deren Gehäuse 7 und bietet dadurch einen Schutz der Kraftstoffpumpe 5 vor den Einwirkungen einer Kollision.The invention relates to a fuel pump 5 for an internal combustion engine 1 with a housing 7, with at least one connecting device 6 for attachment of the housing 7 on the internal combustion engine 1 and with a device 8 for protecting the fuel pump 5 against damage, in particular in the event of a collision. The device 8 for protecting the fuel pump 5 has a bracket 9, which is attached to the internal combustion engine 1 by means of respective connecting devices 12 and is formed at least flush with the housing 7 in a direction x extending away from the mounting plane of the fuel pump 5 on the internal combustion engine 1 the housing 7 protrudes. The bracket 9 can be made much more stable than the fuel pump 5 itself or as the housing 7 and thereby provides protection of the fuel pump 5 from the effects of a collision.

Claims (8)

Pumpe für eine Brennkraftmaschine, insbesondere eine Kraftstoffpumpe, mit einem Gehäuse, mit wenigstens einer Verbindungseinrichtung zur Anbringung des Gehäuses an der Brennkraftmaschine und mit einer Einrichtung zum Schutz der Pumpe vor Beschädigungen, insbesondere im Falle einer Kollision,
dadurch gekennzeichnet, dass
die Einrichtung (8) zum Schutz der Pumpe (5) einen mittels jeweiliger Verbindungseinrichtungen (12) an der Brennkraftmaschine (1) angebrachten Bügel (9) aufweist, der in einer sich von der Anbringebene der Pumpe (5) an der Brennkraftmaschine (1) weg erstreckenden Richtung (x) zumindest bündig mit dem Gehäuse (7) ausgebildet ist oder über das Gehäuse (7) übersteht.Pump for an internal combustion engine, in particular a fuel pump, with a housing, with at least one connecting device for attaching the housing to the internal combustion engine and with a device for protecting the pump from damage, in particular in the event of a collision,
characterized in that
the device (8) for protecting the pump (5) has a bracket (9), which is attached to the internal combustion engine (1) by means of respective connecting devices (12) and which is mounted in a position which depends on the plane of attachment of the pump (5) to the internal combustion engine (1). away extending direction (x) at least flush with the housing (7) is formed or over the housing (7) protrudes. Pumpe nach Anspruch 1,
dadurch gekennzeichnet, dass
zumindest eine der Verbindungseinrichtungen (12) zum Anbringen des Bügels (9) an der Brennkraftmaschine (1) mit einer der Verbindungseinrichtungen (6) zum Anbringen des Gehäuses (7) an der Brennkraftmaschine (1) zusammenfällt.Pump according to claim 1,
characterized in that
at least one of the connecting means (12) for attaching the bracket (9) on the internal combustion engine (1) coincides with one of the connecting means (6) for attaching the housing (7) to the internal combustion engine (1). Pumpe nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
die Verbindungseinrichtungen (6,12) zur Anbringung des Gehäuses (7) und des Bügels (9) an der Brennkraftmaschine (1) jeweils eine Bohrung (13,17), eine Schraube (15,18) und eine Gewindebohrung (16,19) aufweisen.Pump according to claim 1 or 2,
characterized in that
the connecting devices (6, 12) for mounting the housing (7) and the bracket (9) on the internal combustion engine (1) each have a bore (13, 17), a screw (15, 18) and a threaded bore (16, 19) exhibit. Pumpe nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, dass
das Gehäuse (7) über einen Befestigungsflansch (14) mit der Brennkraftmaschine (1) verbunden ist.Pump according to claim 1, 2 or 3,
characterized in that
the housing (7) via a mounting flange (14) with the internal combustion engine (1) is connected. Pumpe nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass
das Gehäuse (7) und der Bügel (9) an einem Zylinderkopf (3) der Brennkraftmaschine (1) angebracht sind.Pump according to one of claims 1 to 4,
characterized in that
the housing (7) and the bracket (9) on a cylinder head (3) of the internal combustion engine (1) are mounted. Pumpe nach Anspruch 5,
dadurch gekennzeichnet, dass
der Bügel (9) so an dem Zylinderkopf (3) angebracht ist, dass ein Teil einer auf den Bügel (9) in Richtung zu dem Zylinderkopf (3) einwirkende Kraft über eine Nockenwelle (20) abgeleitet wird.Pump according to claim 5,
characterized in that
the bracket (9) is mounted on the cylinder head (3) such that a part of a force acting on the bracket (9) in the direction of the cylinder head (3) is discharged via a camshaft (20). Pumpe nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass
der Bügel (9) im wesentlichen U-förmig ausgebildet ist und das Gehäuse (7) nur an einem Teil seines Umfangs umgibt.Pump according to one of claims 1 to 6,
characterized in that
the bracket (9) is substantially U-shaped and surrounds the housing (7) only at a part of its circumference. Pumpe nach Anspruch 7,
dadurch gekennzeichnet, dass
der U-förmige Bügel (9) mittels eines im wesentlichen parallel zu der Anbringebene (10) des Gehäuses (7) an der Brennkraftmaschine (1) verlaufenden Deckels (11) abgeschlossen ist.Pump according to claim 7,
characterized in that
the U-shaped bracket (9) is closed off by means of a lid (11) running essentially parallel to the mounting plane (10) of the housing (7) on the internal combustion engine (1).
EP07010760A 2006-07-31 2007-05-31 Fuel pump for a combustion engine Active EP1886862B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006035908A DE102006035908A1 (en) 2006-07-31 2006-07-31 Pump i.e. fuel pump, for internal-combustion engine of motor vehicle, has connecting devices flushed with housing in path, and protection device with bracket that is attached to internal combustion engine by using connecting devices

Publications (2)

Publication Number Publication Date
EP1886862A1 true EP1886862A1 (en) 2008-02-13
EP1886862B1 EP1886862B1 (en) 2011-10-19

Family

ID=38617429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07010760A Active EP1886862B1 (en) 2006-07-31 2007-05-31 Fuel pump for a combustion engine

Country Status (4)

Country Link
EP (1) EP1886862B1 (en)
JP (1) JP2008032004A (en)
CN (1) CN101117928B (en)
DE (1) DE102006035908A1 (en)

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CN107035584B (en) * 2016-11-11 2019-06-28 安徽江淮汽车集团股份有限公司 A kind of oil pump pump core bracket
JP7020274B2 (en) * 2018-04-26 2022-02-16 トヨタ自動車株式会社 Internal combustion engine
JP6977656B2 (en) * 2018-04-26 2021-12-08 トヨタ自動車株式会社 Protector
JP6973271B2 (en) * 2018-04-26 2021-11-24 トヨタ自動車株式会社 Protector and protector manufacturing method

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Also Published As

Publication number Publication date
EP1886862B1 (en) 2011-10-19
CN101117928A (en) 2008-02-06
CN101117928B (en) 2011-12-21
JP2008032004A (en) 2008-02-14
DE102006035908A1 (en) 2008-02-07

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