EP1927746A1 - Dispositif de contrôle de l'échappement d'un moteur à combustion interne - Google Patents

Dispositif de contrôle de l'échappement d'un moteur à combustion interne Download PDF

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Publication number
EP1927746A1
EP1927746A1 EP07117531A EP07117531A EP1927746A1 EP 1927746 A1 EP1927746 A1 EP 1927746A1 EP 07117531 A EP07117531 A EP 07117531A EP 07117531 A EP07117531 A EP 07117531A EP 1927746 A1 EP1927746 A1 EP 1927746A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
exhaust
passage
slide
gas recirculation
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
EP07117531A
Other languages
German (de)
English (en)
Other versions
EP1927746B1 (fr
Inventor
Heinrich Dismon
Andreas Köster
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP1927746A1 publication Critical patent/EP1927746A1/fr
Application granted granted Critical
Publication of EP1927746B1 publication Critical patent/EP1927746B1/fr
Active legal-status Critical Current
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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/16—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust system
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
    • F02M26/61—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to exhaust pressure
    • F02M26/615—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to exhaust pressure the exhaust back pressure
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/36—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/104—Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves

Definitions

  • the invention relates to an exhaust gas control device for an internal combustion engine in a low-pressure region of an exhaust system of a turbocharged internal combustion engine with an exhaust passage and an exhaust gas recirculation channel, which branches off from the exhaust passage, wherein an exhaust valve controls an exhaust back pressure in the exhaust passage and an exhaust gas recirculation valve controls an exhaust gas mass flow through the exhaust gas recirculation passage and the exhaust valve and the exhaust gas recirculation valve via a control device mechanically coupled depending on each other can be actuated.
  • Low pressure exhaust gas recirculations are known.
  • Low pressure range means that the diversion to the exhaust gas recirculation in the exhaust gas system is located behind the turbine of an exhaust gas turbocharger.
  • an exhaust gas recirculation line is preferably branched off behind the diesel particulate filter. This means that there is soot-free exhaust gas in this area of the exhaust line.
  • the pressure drop when returning to the compressor of the turbocharger is very low, so that a clear limitation of the possible exhaust gas recirculation quantities would be given.
  • an exhaust flap is placed behind the branch of the exhaust gas recirculation line in order to increase the back pressure and thus the possible exhaust gas recirculation rates.
  • a regulation of the exhaust gas recirculation amount is thus dependent on both the exhaust valve and the exhaust gas recirculation valve.
  • the clutch is designed such that the two flaps are opened or closed in opposite directions, so that when fully open exhaust gas recirculation valve the highest possible back pressure created by the closed exhaust flap and thus the highest possible amount of exhaust gas can be returned to the intake manifold or before the compressor.
  • such an embodiment has the disadvantage that, in particular in phases of high exhaust gas temperatures, ie for example during regeneration of a diesel particulate filter, the exhaust gas recirculation flap arranged in the main flow is exposed to a very high thermal load. This can, for example, lead to a delay of the individual components to one another, so that a complete closure of the exhaust gas recirculation line is only very difficult to implement.
  • the operating forces to be expended by the position of the exhaust gas recirculation valve in the main exhaust gas flow are very high.
  • a compact design is desirable.
  • the exhaust gas recirculation valve is designed as a slide, which is coupled to a shaft on which the exhaust valve is arranged.
  • the slide is non-rotatably connected to the shaft on which the exhaust valve is arranged, which eliminates additional coupling members and the structure and assembly are significantly simplified.
  • the slide it is possible to arrange the slide in a form-fitting manner on the end of the exhaust flap shaft facing away from the adjusting device.
  • the exhaust gas recirculation channel branches off substantially perpendicularly from the exhaust gas duct. This ensures that in the case of an open exhaust flap, only a small throttling effect is present, since the serving as an exhaust gas recirculation valve slide is not arranged in the exhaust stream as a flow obstacle. Furthermore, as a result, the thermal load on the slider is significantly reduced, so that in particular in uncontrolled regeneration of the diesel particulate filter impairment of the operability of the exhaust gas recirculation valve is excluded because it is located outside the main exhaust stream and thus thermally decoupled from this.
  • the exhaust passage is formed in a housing having a first perpendicular to the exhaust passage extending bore for the shaft and a second arranged in the flow direction of the exhaust gas before the first passage bore one-sided passage, which serves as a first portion of the exhaust gas recirculation passage, wherein the End of this first section is closed by the slide.
  • a slide housing is connected to the first housing and serves as a cover element for a space located on an outer side of the housing, which is arranged at the level of the passage and the flow direction behind the passage passage, wherein in the slide housing with the Slider coupled end of the shaft and the slide are arranged and on the slider housing, a second portion of the exhaust gas recirculation passage is formed, which adjoins the first portion of the opposite side of the slide to the first portion of the exhaust gas recirculation passage.
  • a sealing element is arranged between the slide and the second section of the exhaust gas recirculation channel.
  • the sealing element is loaded by a spring against an outside of the exhaust gas recirculation channel arranged surface of the slide, so that even with thermal displacement or expansion of one of the components, the tightness is ensured to prevent leaks. Furthermore, in such an embodiment, in particular because of the occurring thermal load can be manufactured with very wide tolerances, so that manufacturing costs can be reduced.
  • the slide has a passage opening for controlling the amount of recirculated exhaust gas, whereby the shape of the opening can be adapted to the following exhaust passage.
  • this passage opening is formed contoured, so that there is the possibility to optimally adapt the exhaust gas recirculation characteristic over the slide contour to the requirements of the respective internal combustion engine, thus releasing a defined small gap, for example, with only small desired exhaust gas recirculation amount, which is not too large, especially at small angles of rotation of the slide Volume flow change follows.
  • an exhaust gas guide in the exhaust passage, which is arranged in the flow direction of the exhaust gas at least partially in front of the exhaust valve and the exhaust pipe around at least partially around the exhaust flap in the open state.
  • Figure 1 shows a side view of an exhaust gas control device according to the invention in a sectional view.
  • FIG. 2 shows a plan view of a slide of the exhaust gas control device according to the invention from FIG. 1.
  • FIG. 3 shows a sectional view along the throughflow axis of the exhaust gas duct from FIG. 1.
  • the exhaust gas control device according to the invention according to Figure 1 consists of a housing 1, in which an exhaust passage 2 is formed, in which an exhaust valve 3, which is mounted on a shaft 4, is arranged.
  • the shaft 4 is mounted in the housing 1 via bearings 5, 6 in a passage bore 7.
  • a first end 8 of the shaft 4 is positively connected to a stub shaft 9, which forms a drive shaft of an adjusting device 10 which is fixed to the housing 1.
  • this adjusting device 10 is shown as an electric actuator with a plug 25, wherein also a pneumatic or hydraulic actuator could be used.
  • the stub shaft 9 is surrounded by a radial shaft sealing ring 11 in the through-bore 7 on this side of the exhaust duct 2.
  • An actuator 12 opposite end 12 of the shaft 4 opens behind the passage bore 7 in a space 13 which is closed by a cover member 14.
  • This cover member 14 is attached to the housing 1 and closes the space 13 largely tight.
  • a coupling member 15 is arranged at the end of the shaft 4 form-fitting, which is made in one piece with a slider 16. Equally, it is also conceivable that coupling member 15 to be firmly connected to the slider 16 after manufacture.
  • the slider 16 serves as an exhaust gas recirculation valve and is disposed in an exhaust gas recirculation passage 17 for controlling a recirculated exhaust gas amount.
  • This exhaust gas recirculation passage 17 leads, for example in a known manner before a compressor of a turbocharger in the low pressure region of a turbocharged internal combustion engine.
  • the exhaust gas recirculation passage 17 branches off from the exhaust gas duct 2 at right angles, for which purpose a second passage 18 is arranged in the housing 1 in the flow direction of the exhaust gas flow, the passage 18 of the housing 1 being in this way the first section 19 of the exhaust gas recirculation passage 17 serves.
  • the passage bore 7 and the second passage 18 of the housing 1 are preferably arranged axially one behind the other here.
  • the slide 16 serving as an exhaust gas recirculation valve now abuts.
  • the slider 16 is loaded in this area by a sealing element 21 via a spring 22 against the first portion 19 of the exhaust gas recirculation passage 7.
  • a second section 23 of the exhaust gas recirculation passage 17 adjoins the sealing element 21, which is made in one piece with the cover element 14 in this preferred embodiment.
  • This cover element 14 thus serves simultaneously as a slide housing 24 and as a second stop for the spring 22nd
  • the sealing element 21 has a radially extending extent, which extends beyond the outer diameter of the second section 23 of the exhaust gas recirculation channel 17, so that the spring element in this region 26 can be applied against the sealing element 21.
  • an axially extending portion 27 of the sealing element 21 In the interior of the exhaust gas recirculation passage 17 is an axially extending portion 27 of the sealing element 21, whose outer diameter substantially corresponds to the inner diameter of the second portion 23 of the exhaust gas recirculation passage 17. If now the sealing element is pressed further by the spring 22 against the slide 16, a possible gap to the fixed second portion 23 of the exhaust gas recirculation passage 17 through this axial portion 27 of the sealing element 21 is closed.
  • the slider 16 is shown in a position in which it releases the entire exhaust gas recirculation passage 17, while the exhaust valve 3 is in a position in which the exhaust passage 2 is closed as much as possible.
  • a contoured passage opening 28 is formed in the slide 16, which can be seen in particular in FIG.
  • two different contours 29 are shown lying one above the other, of which either one is realized.
  • the opening of the underlying second portion 23 of the exhaust gas recirculation passage 17 is additionally shown, so that upon rotation of the slider 16 in the direction of the arrow to the angle ⁇ initially a relatively narrow portion of the contour 29 projects into the exhaust gas recirculation passage 17.
  • This has the consequence that even low exhaust gas recirculation rates can be measured relatively accurately, since usually otherwise small changes in rotational angle in areas of low coverage have a relatively large change in volume flow result. This is reliably avoided here by the contoured design.
  • connection of the shaft 4 to the coupling member 15 or to the slider 16 is achieved by a form-locking connection in the form of a corrugation 30 and a corresponding corrugation of the shaft 4 or a hub pressed thereon.
  • Other forms of connection are of course also conceivable.
  • an exhaust gas guide element 31 is arranged in the exhaust gas duct 2. Parts of this exhaust gas guide 31 are also shown in Figure 1.
  • the shape of this Abgasleitiatas 31 is selected so that the exhaust valve 3 in the channel 2 releasing state with the exhaust gas flow directed front wing 33 in a pocket 32 of the exhaust gas guide 31 is located.
  • In the inflow region 34 of this Abgasleitelement 31 is preferably formed approximately wedge-shaped or at least aerodynamically favorable, so that the hot exhaust gas is as possible subjected to small flow obstacles and thus the pressure loss in the open state remains as low as possible.
  • This Anström Society 34 of Abgasleitides 31 extends substantially annularly half round the exhaust flap 3.
  • this annular Anström Scheme 34 via an approximately semicircular second region 35 and an adjoining web 36 in addition to the housing. 1 get connected.
  • a one-piece production with the housing 1 of the exhaust duct 2 is conceivable for this area.
  • the adjusting device 10 is now actuated, to increase the return rate of both the exhaust gas recirculation passage 17 is opened by turning the slide 16, and at the same time to increase the back pressure by the coupled actuation the exhaust valve 3 in a channel 2 schlie- hybrid State is turned. At the desired lower exhaust gas stirring rate takes place in accordance with a reverse rotation.
  • both the bearings 5, 6 and the sealing elements 11, 21 used are also used under high thermal stress can.
  • ceramic or graphite gaskets are commonly used.
  • Such a device is very reliable even at high thermal stress and has a long service life, the production and assembly to minimize the effort possible are kept simple. It can be generated as far as possible any exhaust gas recirculation characteristics and thermal loads on the functionally relevant components are reduced or compensated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Silencers (AREA)
EP07117531.9A 2006-11-21 2007-09-28 Dispositif de contrôle de l'échappement d'un moteur à combustion interne Active EP1927746B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006055226A DE102006055226A1 (de) 2006-11-21 2006-11-21 Abgassteuereinrichtung für eine Verbrennungskraftmaschine

Publications (2)

Publication Number Publication Date
EP1927746A1 true EP1927746A1 (fr) 2008-06-04
EP1927746B1 EP1927746B1 (fr) 2015-03-18

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Application Number Title Priority Date Filing Date
EP07117531.9A Active EP1927746B1 (fr) 2006-11-21 2007-09-28 Dispositif de contrôle de l'échappement d'un moteur à combustion interne

Country Status (2)

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EP (1) EP1927746B1 (fr)
DE (1) DE102006055226A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015081599A (ja) * 2013-10-23 2015-04-27 カムテック、インコーポレイティド 車両用ｅｇｒバルブ

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009006013A1 (de) 2009-01-23 2010-08-05 Pierburg Gmbh Abgasklappenvorrichtung und Abgaswärmerückgewinnungssystem einer Verbrennungskraftmaschine
JP7065000B2 (ja) * 2018-09-18 2022-05-11 日立Astemo株式会社 吸気装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2232705A1 (de) * 1972-07-04 1974-01-24 Daimler Benz Ag Vorrichtung zur zufuehrung von abgas zum brennstoff-luft-gemisch einer brennkraftmaschine
JPS59119054A (ja) 1982-12-24 1984-07-10 Suzuki Motor Co Ltd Ｅｇｒ制御装置
US5740785A (en) 1997-06-09 1998-04-21 Southwest Research Institute Two way-high pressure loop, exhaust gas recirculation valve
DE102004055846A1 (de) 2004-11-19 2006-05-24 Bayerische Motoren Werke Ag Fahrzeug mit Turbo-Dieselmotor und Abgasrückführung
DE102005002266A1 (de) 2005-01-18 2006-07-20 Bayerische Motoren Werke Ag Abgasrückführsystem für eine Brennkraftmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2241935C3 (de) * 1972-08-25 1981-07-16 Robert Bosch Gmbh, 7000 Stuttgart Anlage zur Abgasentgiftung
DE4111240C1 (fr) * 1991-04-08 1992-06-04 Fa. Carl Freudenberg, 6940 Weinheim, De
DE4227739C2 (de) * 1992-08-21 1998-04-30 Bayerische Motoren Werke Ag Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2232705A1 (de) * 1972-07-04 1974-01-24 Daimler Benz Ag Vorrichtung zur zufuehrung von abgas zum brennstoff-luft-gemisch einer brennkraftmaschine
JPS59119054A (ja) 1982-12-24 1984-07-10 Suzuki Motor Co Ltd Ｅｇｒ制御装置
US5740785A (en) 1997-06-09 1998-04-21 Southwest Research Institute Two way-high pressure loop, exhaust gas recirculation valve
DE102004055846A1 (de) 2004-11-19 2006-05-24 Bayerische Motoren Werke Ag Fahrzeug mit Turbo-Dieselmotor und Abgasrückführung
DE102005002266A1 (de) 2005-01-18 2006-07-20 Bayerische Motoren Werke Ag Abgasrückführsystem für eine Brennkraftmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015081599A (ja) * 2013-10-23 2015-04-27 カムテック、インコーポレイティド 車両用ｅｇｒバルブ

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Publication number Publication date
EP1927746B1 (fr) 2015-03-18
DE102006055226A1 (de) 2008-05-29

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