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WO2014206457A1 - Séparateur d'eau pour systèmes d'entrée d'air de moteurs à combustion interne - Google Patents

Séparateur d'eau pour systèmes d'entrée d'air de moteurs à combustion interne Download PDF

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Publication number
WO2014206457A1
WO2014206457A1 PCT/EP2013/063379 EP2013063379W WO2014206457A1 WO 2014206457 A1 WO2014206457 A1 WO 2014206457A1 EP 2013063379 W EP2013063379 W EP 2013063379W WO 2014206457 A1 WO2014206457 A1 WO 2014206457A1
Authority
WO
WIPO (PCT)
Prior art keywords
duct
water separator
inner duct
water
outer duct
Prior art date
Application number
PCT/EP2013/063379
Other languages
English (en)
Inventor
Rodrigo dos Santos SIMO
Carlos Alberto Da Silva
Original Assignee
Mann+Hummel Gmbh
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 Mann+Hummel Gmbh filed Critical Mann+Hummel Gmbh
Priority to PCT/EP2013/063379 priority Critical patent/WO2014206457A1/fr
Publication of WO2014206457A1 publication Critical patent/WO2014206457A1/fr

Links

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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/022—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
    • F02M35/0226—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls by gravity or by mass inertia, e.g. labyrinths, deflectors
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
    • F02M35/088—Water, snow or ice proofing; Separation or drainage of water, snow or ice
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10013—Means upstream of the air filter; Connection to the ambient air
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
    • F02M35/0202—Manufacturing or assembling; Materials for air cleaner housings
    • F02M35/0203—Manufacturing or assembling; Materials for air cleaner housings by using clamps, catches, locks or the like, e.g. for disposable plug-in filter cartridges

Definitions

  • the present invention relates to a water separator for air intake systems of internal combustion engines.
  • the air intake system of the present invention operates under negative pressure, resulting from the air suction generated by the internal combustion engine, and comprises an untreated air suction duct with a curve to direct the air stream from a suction point to an adjoining water separator.
  • the water separator consists of an outer duct and an inner duct, the inner duct being concentric to and projecting into the outer duct.
  • the air intake system comprises an air cleaner with a filter media to remove particulate material from the air stream that enters into the engine.
  • the air intake system includes also a water separator in the untreated air duct placed upstream from the air cleaner.
  • water in the incoming air stream can degrade and turn less efficient a filter media of the air cleaner, thus being necessary the use of a water separator to remove the water, especially for high performance engine applications.
  • US 6,540,802 B2 discloses an air intake system including a water separator with an inner pipe projecting into an outer pipe.
  • the outer pipe of the water separator presents guide vanes that introduce a swirl motion to the incoming air stream. Due to the swirl the water droplets in the incoming air stream are projected against the wall of the outer pipe, so that the incoming air in the central area of the pipe contains no longer water droplets.
  • the inner pipe conducts the air stream without water droplets to the combustion engine.
  • the outer pipe is provided with a water outlet which is positioned tangentially to the direction of the swirl.
  • US 3,885,935 discloses a centrifugal device for separating entrained liquids from a gaseous stream.
  • the device presents an outer and an inner duct.
  • a helical deflector positioned inside the outer duct produces a swirl motion to the incoming air stream, thereby conducting the liquid droplets against the internal wall of the outer duct, the outer duct presenting a drain for collecting the separated liquid.
  • a barrier element is positioned at the tip of the protruding inner duct to avoid that the separated liquid enters the gas outlet at the inner duct. Similar to US 6,540,802 B2 the cited disclosure presents also the disadvantage of high pressure loss due to the swirl motion introduced to the incoming air stream and a complex design with the necessity of barrier elements and deflectors to avoid the reentrainment of the separated liquid.
  • US 8,425,641 B2 presents an inlet air filtration system with a series of inertial filter elements.
  • the individual inertial filters consist of a tube, a swirl element with a plurality of blades, a separation region downstream from the swirl element, a reducer, an annular outlet and an expander.
  • the gas incoming under positive pressure inside the inertial filter receives a swirl motion by the swirl element.
  • the liquid droplets or gas components with a higher density, entrained in the incoming gas stream are directed by the swirl motion against the inner wall of the separation region.
  • the separated components or liquids are conducted by the positive air flow to the reducer.
  • the separated components or liquids are forced in direction of the annular opening, leaving the inertial filter.
  • the gas stream free from the separated components or liquids enters the expander reducing thereby its velocity.
  • the device has the disadvantage that it operates only with an air stream with positive pressure directed from the swirl element to the expander. The operation under negative pressure would result in the suction of air through the annular opening into the filtration system and the deposition of separated components or liquid before the reducer inside the tube.
  • the proposed solution with the annular opening to the atmosphere and the swirl element represent a high pressure loss for the system.
  • US 6,902,595 B2 discloses an intake water separator for air cleaners of internal combustion engines.
  • the technical solution presented includes an inlet pipe with an elbow to direct the suctioned air stream to the interior wall of the separator, the water separator presenting an inner tube that protrudes inside an outer tube, forming a water separa- tion cavity between both tubes.
  • the water droplets are directed against the inner wall of the water separator due to the change in direction of the air stream. They flow due to gravity downward from the water cavity to a drain tube. It is informed further that in this type of water separator nearly 90% of the water in the air stream can be separated.
  • Alt- hough the disclosed water separator presents a high efficiency with a relatively low pressure loss it has the disadvantage of having an open drain to the atmosphere. This open drain allows the entrance of air in the system increasing the pressure loss. To avoid pressure loss a valve may be installed at the end of drain, but this solution would increase the cost of the water separator.
  • the present invention discloses a water separator for air intake systems of internal combustion engines.
  • the air intake system of the present invention operates under negative pressure, resulting from the suctioned air stream generated by the internal combustion engine, and comprises an untreated air suction duct with a curve to direct the suctioned air stream from a suction point to an adjoining water separator positioned downstream.
  • the water separator consists of an outer duct and an inner duct, the inner duct being concentric to and projecting into the outer duct, wherein the water separator is positioned substantially in vertical direction and presents between the inner duct and the end of the outer duct an annular gap for water outlet.
  • the untreated air stream with moisture entering the suction point is directed by the curve to the internal wall of the suction duct upstream to the water separator.
  • the water droplets directed against the internal wall of the suction duct will flow by gravity downward to the substantially vertically positioned water separator. Reaching the water sepa- rator the coalesced water droplets will flow between its outer and inner duct in the direction of the annular gap.
  • the negative pressure generated inside the air intake system will result in a small air flow through the annular gap directed to the inside of the water separator.
  • the moisture in the suctioned air stream which is directed against the inner wall of the suction duct, will as mentioned coalesce to droplets and flow downwards by gravity between the inner and the outer duct of the water separator in the direction of the annular gap.
  • the amount of coalesced water between the outer and inner duct of the water separator will seal the annular gap against the air flow from the outside.
  • a water column will continuously build up between the outer and the inner duct of the water separator.
  • the annular gap between the outer duct and the inner duct of the water separator is also alternatively defined by a barrier element which may be disposed in radial direction around the outside wall of the inner duct.
  • a barrier element which may be disposed in radial direction around the outside wall of the inner duct.
  • the distance between the barrier element and the inner wall of the outer duct of the water separator will determine the annular gap.
  • the dimension of the annular gap can be adjusted, the invention being therefore applicable to different sizes of water separators and air flow rates.
  • the water separator of the present invention consists of basically two parts, an outer duct and an inner duct, which can be produced separately from the ducts of the air intake system.
  • the parts of the water separator can be attached to the ducts of the air intake system on a fixed manner, e.g. by welding or gluing, or on a detachable manner, e.g. by clasps or threaded devices.
  • the two parts of the water separator can be easily manufactured, e.g. by injection molding of plastic, reducing also its production cost.
  • FIG. 1 is a top view of the inner duct of the water separator
  • FIG. 1 is a schematic view of the inner duct and the outer duct of the water sepa - rator in an assembled position, with a sectional cut presenting the interconnecting elements;
  • FIG. 5 is a detail view of figure 5 presenting the inner duct and the outer duct in the region of the annular gap;
  • the outer duct 3 of the water separator is integral with duct D. It is also possible to have a fixed union through welding or gluing between the outer duct 3 of the water separator 2 and the duct D. Also detachable unions through clasps or threaded unions are possible. A similar situation occurs with the inner duct 4 of the water separator 2 and the air intake ducts to the internal combustion engine.
  • FIG 2 the two parts of the water separator 2, the outer duct 3 and the inner duct 4, are shown on an assembled position.
  • the longitudinal cut shows the positive union between the two parts, the inner duct 4 and the outer duct 3 being fixed against each other in vertical and rotational directions.
  • Support elements 6 are placed circumferential equally spaced apart at the outer surface of the inner duct 4. These support elements 6 will guarantee the positive union between the inner duct 4 and the outer duct 3 and that the annular gap G is kept constant between the inner duct 4 and the outer duct 3.
  • the number of support elements 6 may vary, from four as shown in the embodiment to any number that guarantees a constant annular gap G between the inner duct 4 and the outer duct 3. Usually at least three support elements 6 are used.
  • the inner duct 3 presents an inwardly tapered lip 9 which facilitates the insertion of the outer duct 3 over the inner duct 4 during assembly. Furthermore the inwardly tapered lip
  • the support elements 6 present retain elements 7, 8.
  • a nose 8 on the upper part of the support element 6 engages through a snap fit connection into a corresponding window
  • the nose 8 limits the movement of the inner duct 4 in vertical and rotation direction in relation to the outer duct 3.
  • a stopper 7 of the support element 6 receives the edge of the outer duct 3 limiting its movement in vertical direction against the inner duct 4.
  • Figure 3 shows the inner duct 4 of the water separator 2 on a side view.
  • a circumferentially continuous radial barrier element 5 projects from the outside wall of the inner duct 4 in the region of the annular gap G.
  • the barrier element 5 facilitates the formation of a water column H due to a further restriction of the distance between the outer duct 3 and the inner duct 4 at the region of the annular gap G.
  • the radial height R of the barrier element 5 may be defined from zero to nearly the radial height of the support element 6 depending on the parameters of the system, i.e. the moisture content of the intake air, the intake flow rate, the height of the water column H over the annular gap G.
  • a top view of the inner duct 4 is shown in figure 4 and the inwardly tapered lip 9, the nose 8 of the support element and the barrier element 5 can be easily viewed.
  • the radial height R of the barrier element 5 can also be seen.
  • the barrier element 5 is an optional feature of the invention.
  • Other solutions to define the annular gap G are possible, as for example the uniform distance between the inner 4 and the outer duct 3 given by the support elements 6 or a tapered configuration between the inner 4 and outer duct 3 in the region of the annular gap G.
  • the tapered configuration could be from the inner 4 and/or the outer duct.
  • FIG. 5 the interaction of the outer duct 3 with the inner duct 4 is shown.
  • the window 10 of the outer duct 3 receives the nose 8 in a snap fit connection and the edge of the outer duct 3 engages against the stopper 7.
  • the droplets of moisture due to gravity flow between the inner wall of the outer duct 3 and the outer wall of the inner duct 4 until they reach the barrier element 5.
  • the radial height R of the barrier element 5 defines in this embodiment the annular gap G.
  • the continuous flow of droplets will result in a water column H over the annular gap G.
  • This water col- umn H will seal the water separator 2 from the outside and avoid any pressure loss on the water separator 2.
  • the radial height R may be defined depending on the height of the water column and the negative pressure inside the air intake system. Due to the continuous build up of the water column H a continuous flow of water through the annular gap G is assured.
  • the water separator 2 of the present invention has also a considerably high efficiency of water separation with a very low pressure loss.
  • a diameter of the suction duct of 100 mm and an annular gap of 1 mm is shown in figure 7.
  • the example shows that at an internal pressure of 710 mm Hg, a temperature of 24 °C, a wa- ter concentration 215 g/min and nominal flow of 10 m 2 /min the efficiency of water separation of the water separator 2 of the present invention lies at 99,5% with a pressure loss of only 1 ,4 mbar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

La présente invention concerne un séparateur d'eau (2) pour un système d'entrée d'air (1) de moteurs à combustion interne. Le système d'entrée d'air (1) fonctionne sous pression négative et comprend un conduit d'aspiration d'air non traité (D) présentant une courbe (C) pour diriger le flux d'air aspiré d'un point d'aspiration (S) au séparateur d'eau contigu (2). Le séparateur d'eau (2) comprend un conduit externe (3) et un conduit interne (4), ledit conduit interne (4) étant concentrique par rapport au conduit externe (3) et fait saillie à l'intérieur de celui-ci, le séparateur d'eau (2) étant positionné selon une direction pratiquement verticale et présentant une fente annulaire (G) entre le conduit interne (4) et l'extrémité du conduit externe (3) pour la sortie d'eau. Le séparateur d'eau (2) selon la présente invention fonctionne de façon continue sans soupape d'évacuation et avec une perte de pression minimale.
PCT/EP2013/063379 2013-06-26 2013-06-26 Séparateur d'eau pour systèmes d'entrée d'air de moteurs à combustion interne WO2014206457A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/063379 WO2014206457A1 (fr) 2013-06-26 2013-06-26 Séparateur d'eau pour systèmes d'entrée d'air de moteurs à combustion interne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/063379 WO2014206457A1 (fr) 2013-06-26 2013-06-26 Séparateur d'eau pour systèmes d'entrée d'air de moteurs à combustion interne

Publications (1)

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WO2014206457A1 true WO2014206457A1 (fr) 2014-12-31

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108350840A (zh) * 2015-11-19 2018-07-31 日产自动车株式会社 内燃机的进气装置
US20190015843A1 (en) * 2017-07-12 2019-01-17 Hamilton Sundstrand Corporation Water extractor
CN110005553A (zh) * 2019-05-28 2019-07-12 无锡亿利环保科技有限公司 空气滤清器的锥形集尘面结构
CN110388291A (zh) * 2018-04-19 2019-10-29 曼·胡默尔有限公司 用于内燃机的进气段的进气管的管区段
NL2022200B1 (en) * 2018-12-13 2020-07-03 Daf Trucks Nv Air filter assembly for an internal combustion engine of a commercial motor vehicle.

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791112A (en) * 1971-09-23 1974-02-12 Donaldson Co Inc Moisture removing stack cap for engine air intakes
US3885935A (en) 1971-09-02 1975-05-27 Heat Fluid Engineering Corp Centrifugal apparatus for separating entrained liquids from a gaseous stream
GB2011273A (en) * 1977-12-30 1979-07-11 Fiat Veicoli Ind Air-intake devices for internal combustion engines
JPS5921164U (ja) * 1982-07-30 1984-02-08 株式会社クボタ 遊星ギヤ−の潤滑装置
JPS5954310U (ja) * 1982-10-04 1984-04-10 いすゞ自動車株式会社 車輛におけるエアインテ−クダクトの水切り装置
JPS59203860A (ja) * 1983-05-06 1984-11-19 Shiro Nakamura 車輛用内燃機関の与圧吸気導入装置
JPS6092618U (ja) * 1983-11-30 1985-06-25 三菱自動車工業株式会社 吸気ダクトの気水分離装置
US6540802B2 (en) 2000-06-21 2003-04-01 Filterwerk Mann & Hummel Gmbh Air intake system including a water separator with an inner pipe projecting into an outer pipe
US6902595B2 (en) 2002-08-14 2005-06-07 Parker-Hannifin Corporation Intake water separator
US8425641B2 (en) 2010-06-30 2013-04-23 General Electric Company Inlet air filtration system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885935A (en) 1971-09-02 1975-05-27 Heat Fluid Engineering Corp Centrifugal apparatus for separating entrained liquids from a gaseous stream
US3791112A (en) * 1971-09-23 1974-02-12 Donaldson Co Inc Moisture removing stack cap for engine air intakes
GB2011273A (en) * 1977-12-30 1979-07-11 Fiat Veicoli Ind Air-intake devices for internal combustion engines
JPS5921164U (ja) * 1982-07-30 1984-02-08 株式会社クボタ 遊星ギヤ−の潤滑装置
JPS5954310U (ja) * 1982-10-04 1984-04-10 いすゞ自動車株式会社 車輛におけるエアインテ−クダクトの水切り装置
JPS59203860A (ja) * 1983-05-06 1984-11-19 Shiro Nakamura 車輛用内燃機関の与圧吸気導入装置
JPS6092618U (ja) * 1983-11-30 1985-06-25 三菱自動車工業株式会社 吸気ダクトの気水分離装置
US6540802B2 (en) 2000-06-21 2003-04-01 Filterwerk Mann & Hummel Gmbh Air intake system including a water separator with an inner pipe projecting into an outer pipe
US6902595B2 (en) 2002-08-14 2005-06-07 Parker-Hannifin Corporation Intake water separator
US8425641B2 (en) 2010-06-30 2013-04-23 General Electric Company Inlet air filtration system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108350840A (zh) * 2015-11-19 2018-07-31 日产自动车株式会社 内燃机的进气装置
CN108350840B (zh) * 2015-11-19 2019-07-23 日产自动车株式会社 内燃机的进气装置
US20190015843A1 (en) * 2017-07-12 2019-01-17 Hamilton Sundstrand Corporation Water extractor
US10525485B2 (en) 2017-07-12 2020-01-07 Hamilton Sundstrand Corporation Water extractor
US10668486B2 (en) * 2017-07-12 2020-06-02 Hamilton Sundstrand Corporation Water extractor
CN110388291A (zh) * 2018-04-19 2019-10-29 曼·胡默尔有限公司 用于内燃机的进气段的进气管的管区段
CN110388291B (zh) * 2018-04-19 2022-09-23 曼·胡默尔有限公司 用于内燃机的进气段的进气管的管区段
NL2022200B1 (en) * 2018-12-13 2020-07-03 Daf Trucks Nv Air filter assembly for an internal combustion engine of a commercial motor vehicle.
CN110005553A (zh) * 2019-05-28 2019-07-12 无锡亿利环保科技有限公司 空气滤清器的锥形集尘面结构
CN110005553B (zh) * 2019-05-28 2024-04-02 无锡亿利环保科技有限公司 空气滤清器的锥形集尘面结构

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