WO2014137266A1 - Aménagement se rapportant à un moteur à combustion - Google Patents

Aménagement se rapportant à un moteur à combustion Download PDF

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Publication number
WO2014137266A1
WO2014137266A1 PCT/SE2014/050163 SE2014050163W WO2014137266A1 WO 2014137266 A1 WO2014137266 A1 WO 2014137266A1 SE 2014050163 W SE2014050163 W SE 2014050163W WO 2014137266 A1 WO2014137266 A1 WO 2014137266A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinders
exhaust
engine
conduit
cylinder
Prior art date
Application number
PCT/SE2014/050163
Other languages
English (en)
Inventor
Henrik Skog
Håkan SARBY
Original Assignee
Scania Cv Ab
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 Scania Cv Ab filed Critical Scania Cv Ab
Priority to DE112014000858.3T priority Critical patent/DE112014000858T5/de
Publication of WO2014137266A1 publication Critical patent/WO2014137266A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0242—Variable control of the exhaust valves only
    • 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
    • F02M26/40—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with timing means in the recirculation passage, e.g. cyclically operating valves or regenerators; with arrangements involving pressure pulsations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0242—Variable control of the exhaust valves only
    • F02D13/0249—Variable control of the exhaust valves only changing the valve timing only
    • 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
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • 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
    • F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
    • 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
    • F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
    • F02M26/43—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention pertains to an arrangement at a combustion engine according to the preamble of the enclosed claim 1 and a method according to the preamble of the enclosed independent method claim.
  • the invention pertains to such arrangements for use in all types of combustion engines, such as an otto engine and a diesel engine, but the description below pertains primarily to such arrangements in motor vehicles.
  • Such motor vehicles may be wheeled utility vehicles, such as trucks and buses.
  • Such an arrangement entails that the engine is equipped with an arrangement for exhaust gas recirculation of the type usually called EGR (Exhaust Gas Recirculation), which consists of a purification method for the reduction of the level of harmful emissions, especially nitrogen oxides (NO x ). It is desirable to achieve a certain size of the share of exhausts being recirculated for mixing with the inlet air, so that the desired size is typically 10% of the total exhausts arising from the combustion in the engine's cylinders. Recirculating this share of the exhausts to the engine's air supply conduit is problematic. In the event such an arrangement has a variable geometry turbocharger
  • VGT turbocharger
  • FGT fixed geometry turbocharger
  • the objective of the present invention is to provide an arrangement of the type described above, which is improved in at least one respect in relation to prior art arrangements.
  • This objective is achieved according to the invention by providing an arrangement of the type described in patent claim 1.
  • the first cylinder may have several exhaust valves and only one or several or all of these, i.e. any number of them, may be opened earlier in the cylinder's combustion cycle than at least one exhaust valve in said second cylinder's combustion cycle.
  • said exhaust valves in said first cylinder are arranged to open 5-60 crank degrees, 5-30 crank degrees or 10-20 crank degrees earlier than the exhaust valves in the at least one second cylinder. This constitutes potential intervals for an earlier opening of an exhaust valve in said first cylinder, without the fuel consumption of the cylinder becoming unacceptably high. How large an earlier opening of the relevant exhaust valve is selected, may depend on the intended use of the combustion engine.
  • the at least one second cylinder has its exhaust outlet connected with said second conduit.
  • all the cylinders in the engine have their exhaust outlets connected with said second conduit. Since exhaust pulses from all the cylinders are used for recirculation of exhausts to the air supply, this exhaust flow becomes substantially even, while an earlier opening of at least one exhaust valve in one or several first cylinders has a heightening impact on this flow.
  • said second conduit comprises at least one inlet opening for receipt of exhausts arranged near, such as in front of, and especially aligned with, the exhaust outlet of said one first cylinder.
  • the invention comprises a control device, adapted to control said exhaust valves in said one first cylinder to open at least 5 crank degrees earlier in the cylinder's combustion cycle than the exhaust valves of the at least one second cylinder.
  • a control device adapted to control said exhaust valves in said one first cylinder to open at least 5 crank degrees earlier in the cylinder's combustion cycle than the exhaust valves of the at least one second cylinder.
  • the arrangement comprises an exhaust manifold device designed to receive exhausts from several of said cylinders and connected to an exhaust conduit for the removal of exhausts from the arrangement, and the second conduit has at least one opening, debouching in the exhaust manifold device for receipt of exhausts, arranged at one end of the exhaust manifold device in the region of its connection to the exhaust outlet conduit. It is advantageous to arrange an opening in the second conduit at this place in the exhaust manifold device, to avoid exhausts from a cylinder flowing in the opposite direction, toward exhausts from some other cylinder.
  • the arrangement comprises a turbocharger connected to the first conduit, for
  • turbocharger is advantageously of the type with fixed geometry (FGT). Since the exhaust valves in at least one cylinder connected with said second conduit are opened earlier, so that a more powerful exhaust pulse for driving of the EGR gases is generated, the exhaust recirculation may be driven at a desirably high level in a combustion engine equipped with a fixed geometry
  • the engine has at least two said first cylinders, and a control device in the arrangement is adapted to initiate combustion in the engine's cylinders in a sequential order, so that said first cylinders are essentially evenly distributed or evenly distributed therein.
  • a control device in the arrangement is adapted to control said at least one exhaust valve in aid one first cylinder, so that it has a fixed opening distance, in crank degrees, to said at least one exhaust valve in aid at least one second cylinder.
  • the control of the EGR becomes simple and reliable.
  • the control device does not actually control said at least one exhaust valve in said first cylinder to open earlier, rather it is not possible to control when it opens at all.
  • the distance in crank degrees between the opening of the exhaust valves in the engine's different cylinders is fixed in this embodiment, i.e. always the same.
  • the combustion engine has six cylinders, and two of the cylinders are first cylinders, both having their exhaust outlet connected with said second conduit, and having exhaust valves, which a control device in the arrangement is adapted to control to open at least 5 crank degrees earlier in the combustion cycle than the exhaust valves in the remaining four second cylinders.
  • a control device in the arrangement is adapted to control to open at least 5 crank degrees earlier in the combustion cycle than the exhaust valves in the remaining four second cylinders.
  • the combustion engine has eight cylinders, and two, three or four of the cylinders are first cylinders, all having their exhaust outlet connected with said second conduit, and having exhaust valves, which a control device of the arrangement is adapted to control to open at least 5 crank degrees earlier in the combustion cycle than exhaust valves in the remaining said second cylinders.
  • the invention also pertains to a method for the control of air supply to a combustion engine with at least three cylinders, according to the enclosed independent method claims. The result of the
  • the invention also pertains to a computer program, a computer program product, an electronic control device and a combustion engine.
  • a computer program product e.g., a computer program product
  • an electronic control device e.g., a camcorder
  • a combustion engine e.g., a combustion engine
  • Fig. 1 is a simplified view of an arrangement at a combustion engine of the type according to the invention
  • Fig.2 is, in relation to Fig. 1 , a somewhat more detailed view of a said arrangement according to one embodiment of the invention
  • Fig.3 shows a diagram which illustrates the exhaust pressure over crank degrees in the three cylinders illustrated at the top of Fig.2, and how this changes in connection with an earlier opening of the exhaust valve in the third cylinder, and
  • Fig.4 is a diagram of an electronic control device for the
  • FIG. 1 An arrangement at a combustion engine is schematically illustrated in Fig. 1.
  • the arrangement has a combustion engine 7 equipped with six cylinders 1-6 in the form of a straight, six-cylinder engine, and may be intended for a motor vehicle or for industrial or marine use.
  • the arrangement has an air inlet 8 for fresh air to the engine, from which the air is led via a first conduit 9 to the engine's cylinders, for combustion of fuel mixed therewith in the cylinders.
  • a supercharger in the form of a turbocharger 10 with fixed geometry (FGT) is arranged to compress the air to be supplied to the cylinders.
  • the turbocharger 10 comprises, in a conventional manner, a compressor 11 and a turbine 12.
  • the air which has been given an overpressure via the compressor 11, is cooled in an intercooler 16, and then continues to an air inlet conduit 17 in the first conduit, leading the air to the cylinders 1-6.
  • the engine comprises two exhaust manifolds 27, 31 (see Fig.2) to which the exhausts are led from the cylinders, where the cylinders 1-3 lead the exhausts to one of the exhaust manifolds 27, and where exhausts from the cylinders 4-6 are led to the second exhaust manifold 31. From the respective exhaust manifolds 27, 32 the exhausts are led further via the exhaust outlet conduits 13, 14 to the turbine 12.
  • the turbine 12 is thus equipped with a double inlet, i.e. a so-called Twin Scroll Turbine.
  • the exhausts driving the turbine 12 exit into the environment via an exhaust conduit 15.
  • the arrangement also has an EGR system for recirculation of a part of the exhausts, resulting from the combustion in the engine, to the part of the first conduit 9 extending downstream of the intercooler 16, for mixture with fresh air in the air supply to the engine. It is
  • a second conduit 18 extends with two conduit sections 19, 20 from the exhaust outlet conduits 13, 14 and further along, via a back valve 21 and an EGR cooler 22, to the first conduit 9.
  • the arrangement has, in an advantageous embodiment, a control device 23 adapted to control at least the opening of the exhaust valves in the cylinders, i.e. at which point in the combustion cycle the respective cylinder's combustion chamber is connected to the cylinder's exhaust outlet for the emission of exhausts.
  • this may be the same control device which is adapted to initiate the combustion in the engine's cylinders, and also to control other components in the arrangement.
  • the control of the valves' time of opening may suitably be carried out indirectly, through control of an arrangement intended for this purpose for the control of variable valve times, e.g. one where the engine's camshaft is brought to abut against alternative cam ridges.
  • Alternatives where the valves may be
  • each cylinder has two exhaust valves 41, 42 controlled by the control device, and two inlet valves 43, 44.
  • Each cylinder could, however, have another number of exhaust valves and inlet valves. For example, one, three or four exhaust valves.
  • the exhaust outlets 24-26 in three of the cylinders 1-3 are connected to one of the exhaust manifolds 27, while the exhaust outlets 28-30 in the remaining cylinders 4-6 are connected to the second exhaust manifold 31.
  • the pressure in the exhaust manifolds 27, 31 will be approximately the same as in the air inlet conduit 17, so that there is no pressure difference which drives the recirculation of exhausts through the second conduit 18, but such drive will instead be provided by the exhaust pulses resulting when the cylinders' exhaust valves open, so that a pulsated EGR flow is obtained.
  • the return valve 21 prevents each respective exhaust pulse from turning back when the pressure in the exhaust manifolds 27, 31 drops.
  • the control device 23 controls the exhaust valves 41, 42 in a first cylinder 3, 4 connected to the respective exhaust manifolds 27, 31 to open at least 5 crank degrees and at most 60 crank degrees, and here to open approximately 20 crank degrees earlier in this cylinder's combustion cycle than the exhaust valves in both the second
  • the respective conduit sections 19, 20 of the second conduit are arranged with their inlet openings 32, 33 for receipt of exhausts in front of and aligned with the extension of the exhaust outlet 26, 28 in said first cylinders 3, 4, while the cylinders that have their exhaust outlets debouching in the exhaust manifold device, at one end thereof in the region of its connection with the exhaust outlet conduits 13, 14, i.e.
  • turbo foot are those which have been selected to be said first cylinders.
  • the exhaust pulse generated thanks to the earlier opening of an exhaust valve is used to a maximum, in order to drive the EGR.
  • All, here two, exhaust valves are advantageously opened earlier in the cylinders 3, 4, arranged facing the inlet openings 32, 33, in order to obtain a strongly driving EGR exhaust pulse.
  • Fig.2 also shows schematically how a small scoop 34, 35 may be arranged to help in using a part of the exhaust pulses from both the second cylinders 1, 2 and 5, 6 respectively, to drive the EGR.
  • the control device 23 may be adjusted and, in those operating modes where exhaust recirculation is not required, may be set to open the relevant exhaust conduit (exhaust conduits) at the same time as the engine's other exhaust valves. This entails that the work generated at the combustion may be used optimally.
  • a control device to control the initiation of combustion in the engine's cylinders is adapted to perform this in a sequence, so that both the first cylinders are evenly distributed in this sequence, and for this sake the firing sequence 1 53624 is chosen here, where 3 and 4 are the cylinders with exhaust valves which are opened earlier.
  • 3 and 4 are the cylinders with exhaust valves which are opened earlier.
  • FIG.3 shows how the pressure P at the inlet opening 32 for the EGR output from the cylinders 1-3 develops over the number of crank degrees CP in the cylinders.
  • the arrangement instead comprises a combustion engine in the form of a V8 engine with eight cylinders, which advantageously have a firing sequence 1 5
  • a computer program code for the implementation of a method according to the invention is suitably included in a computer program, loadable into the internal memory of a computer, such as the internal memory of an electronic control device of a said arrangement, e.g. a motor vehicle.
  • a computer program is suitably provided via a computer program product comprising a data storage medium readable by an electronic control device, the data storage medium having the computer program stored thereon. Said data storage medium is e.g.
  • FIG.4 illustrates very schematically an electronic control device 36 comprising execution means 37, such as a central processor unit (CPU), for the execution of a computer software.
  • the execution means 37 communicates with a memory 38, e.g. a RAM memory, via a data bus 39.
  • the control device 36 also comprises a data storage medium 40, e.g. in the form of a Flash memory or a ROM, PROM, EPROM or EEPROM type memory.
  • the execution means 37 such as a central processor unit (CPU), for the execution of a computer software.
  • the execution means 37 communicates with a memory 38, e.g. a RAM memory, via a data bus 39.
  • the control device 36 also comprises a data storage medium 40, e.g. in the form of a Flash memory or a ROM, PROM, EPROM or EEPROM type memory.
  • the execution means 37 is e.g. in the form of a Flash memory or a ROM, PROM, EPROM or EEPROM
  • a computer program comprising computer program code for the implementation of a method according to the invention is stored on the data storage medium 40.
  • the arrangement could lack a turbocharger.
  • Another alternative is, for example, in a combustion engine of the type displayed in Fig.2, to have only the cylinders in one of the exhaust manifold devices, such as cylinders 1-3, connected to the second conduit for EGR, and in this case e.g. the control device may be adapted to control the exhaust valves of the cylinders 2 and 3 to open earlier in their combustion cycle than the remaining cylinders.
  • One single inlet opening to the second conduit could be arranged in front of cylinder 3, and another such opening in front of cylinder 2.
  • control device is to be interpreted as also comprising the case that adjustability of distance in crank degrees between the opening of the exhaust valves of the combustion engine's different cylinders is lacking, and that this distance is adjusted to be invariable over time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Supercharger (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

Aménagement dans un moteur à combustion (7) doté d'au moins trois cylindres (1-6) comprenant un premier conduit (9) pour apport d'air au moteur en vue de la combustion dans les cylindres, un deuxième conduit (18) pour ramener une partie des échappements provenant de la combustion dans le moteur jusqu'au premier conduit, pour les mélanger à de l'air frais pour apport d'air au moteur. Une sortie des échappements depuis au moins un des cylindres est reliée au deuxième conduit. Toutes les soupapes d'échappement dans au moins un des cylindres, dont la sortie d'échappement est reliée au deuxième conduit, sont conçues pour s'ouvrir au moins 5 degrés de vilebrequin plus tôt dans le cycle de combustion de ce cylindre qu'au moins une soupape d'échappement d'au moins un des autres cylindres.
PCT/SE2014/050163 2013-03-06 2014-02-11 Aménagement se rapportant à un moteur à combustion WO2014137266A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112014000858.3T DE112014000858T5 (de) 2013-03-06 2014-02-11 Anordnung in Bezug auf einen Verbrennungsmotor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1350269A SE537013C2 (sv) 2013-03-06 2013-03-06 Återföring av avgaser genom att tidigarelägga öppnandet av åtminstone en cylinders avgasventiler
SE1350269-5 2013-03-06

Publications (1)

Publication Number Publication Date
WO2014137266A1 true WO2014137266A1 (fr) 2014-09-12

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Application Number Title Priority Date Filing Date
PCT/SE2014/050163 WO2014137266A1 (fr) 2013-03-06 2014-02-11 Aménagement se rapportant à un moteur à combustion

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DE (1) DE112014000858T5 (fr)
SE (1) SE537013C2 (fr)
WO (1) WO2014137266A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3922826A1 (fr) 2020-06-12 2021-12-15 Volvo Truck Corporation Unité de commande et son procédé pour commander les soupapes d'échappement des cylindres dans un moteur à combustion interne

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999060259A1 (fr) * 1998-05-04 1999-11-25 Scania Cv Aktiebolag (Publ) Dispositif de recirculation des gaz d'echappement et moteur a combustion interne
JP2002030980A (ja) * 2000-07-18 2002-01-31 Mitsubishi Motors Corp 過給機付きエンジンのｅｇｒ装置
WO2010149563A1 (fr) * 2009-06-25 2010-12-29 Avl List Gmbh Procédé permettant de faire fonctionner un moteur à combustion interne
US20120023935A1 (en) * 2010-09-09 2012-02-02 Ford Global Technologies, Llc Method and system for a turbocharged engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999060259A1 (fr) * 1998-05-04 1999-11-25 Scania Cv Aktiebolag (Publ) Dispositif de recirculation des gaz d'echappement et moteur a combustion interne
JP2002030980A (ja) * 2000-07-18 2002-01-31 Mitsubishi Motors Corp 過給機付きエンジンのｅｇｒ装置
WO2010149563A1 (fr) * 2009-06-25 2010-12-29 Avl List Gmbh Procédé permettant de faire fonctionner un moteur à combustion interne
US20120023935A1 (en) * 2010-09-09 2012-02-02 Ford Global Technologies, Llc Method and system for a turbocharged engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3922826A1 (fr) 2020-06-12 2021-12-15 Volvo Truck Corporation Unité de commande et son procédé pour commander les soupapes d'échappement des cylindres dans un moteur à combustion interne
US11719172B2 (en) 2020-06-12 2023-08-08 Volvo Truck Corporation Control unit and method therein for controlling exhaust valves of cylinders in an internal combustion engine

Also Published As

Publication number Publication date
SE537013C2 (sv) 2014-12-02
DE112014000858T5 (de) 2015-11-05
SE1350269A1 (sv) 2014-09-07

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