EP3478952A1 - Dispositif et methode de controle de l'introduction d'air et de gaz d'echappement a l'admission d'un moteur a combustion interne suralimente - Google Patents
Dispositif et methode de controle de l'introduction d'air et de gaz d'echappement a l'admission d'un moteur a combustion interne suralimenteInfo
- Publication number
- EP3478952A1 EP3478952A1 EP17732462.1A EP17732462A EP3478952A1 EP 3478952 A1 EP3478952 A1 EP 3478952A1 EP 17732462 A EP17732462 A EP 17732462A EP 3478952 A1 EP3478952 A1 EP 3478952A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- duct
- exhaust gas
- compressed air
- turbine
- air
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
-
- 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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/16—Control of the pumps by bypassing charging air
- F02B37/168—Control of the pumps by bypassing charging air into the exhaust conduit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
- F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
- F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D23/00—Controlling engines characterised by their being supercharged
- F02D23/02—Controlling engines characterised by their being supercharged the engines being of fuel-injection type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/0065—Specific aspects of external EGR control
-
- 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
- F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
-
- 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
-
- 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
- Y02T10/40—Engine management systems
Definitions
- the present invention relates to architectures and to a device for controlling a device for introducing the quantity of air at the intake of a supercharged internal combustion engine, in particular a stationary engine or for a vehicle automotive or industrial.
- the present invention is suitable for engines, in particular diesel engines, equipped with an exhaust gas recirculation circuit.
- the power delivered by an internal combustion engine is dependent on the amount of air introduced into the combustion chamber of the engine, amount of air which is itself proportional to the density of this air.
- a turbocharger In the case of supercharging by a turbocharger, the latter comprises a rotary turbine, single flow or double flow, connected by an axis to a rotary compressor.
- the exhaust gases from the engine pass through the turbine which is then rotated. This rotation is then transmitted to the compressor which, by its rotation, compresses the outside air before it is introduced into the combustion chamber.
- the compressor As is better described in the French patent application No. 2,478,736, it is provided, in order to significantly increase this amount of compressed air in the engine combustion chamber, to further increase the compression of the engine. outside air by the compressor.
- Boost circuit a fluid amplifier circuit
- Boost circuit Boost circuit
- This turbine is then traversed by a larger amount of fluid (mixture of compressed air and exhaust gas), which increases the speed of rotation of the turbine and consequently the compressor.
- This increase in compressor speed thus makes it possible to increase the pressure of the outside air that will be compressed in this compressor and then introduced into the combustion chamber of the engine.
- the compressed air has a higher density which increases the amount of air contained in the combustion chamber.
- This type of supercharged engine although satisfactory, nevertheless has significant disadvantages.
- the present invention relates to an optimized architecture of the air loop and recirculation of engine exhaust gas for use on the same engine of the "HP EGR” or "Boost”, while avoiding a complexity too high for the respective ducts and controls.
- the present invention relates to a device for controlling the amount of air introduced to the intake of a supercharged internal combustion engine
- a supercharging system comprising a turbocharger with a turbine connected to at least one gas outlet of exhaust of said engine as well as an outdoor air compressor, a conduit for partial transfer of compressed air from the compressor to the inlet of the turbine, and a flue gas recirculation duct between an exhaust gas outlet and a compressed air intake pipe, characterized in that said partial transfer duct and said flue gas recirculation duct comprise at least one common portion.
- the device may include a winnowing system controlled on the partial compressed air transfer circuit and on the EGR circuit to control EGR exhaust gas recirculation, or to control the partial transfer of compressed air to the turbine (8).
- the winnowing system may include at least one valve on the EGR exhaust gas recirculation circuit and a valve on the partial transfer conduit.
- the partial transfer duct may be connected either upstream or downstream of a heat exchanger on the compressed air duct.
- the winnowing system may comprise at least one three-way valve.
- the partial transfer duct may comprise an exchanger for the recirculation of the exhaust gases.
- the present invention also relates to a method for controlling the amount of air introduced to the intake of a supercharged internal combustion engine comprising a supercharging system comprising a turbocharger with a turbine connected to at least one exhaust gas outlet.
- a supercharging system comprising a turbocharger with a turbine connected to at least one exhaust gas outlet.
- said engine as well as an outdoor air compressor, a duct for partially transferring compressed air from the compressor to the inlet of the turbine, and a duct for recirculating the exhaust gas between a gas outlet of exhaust and a compressed air intake pipe, characterized in that a common portion of duct is used for said partial transfer duct and said duct for the recirculation of the exhaust gas.
- a winnowing system can be controlled for either the recirculation of the exhaust gas or the partial transfer of compressed air.
- FIG. 1 which illustrates an internal combustion engine with its supercharging device and its HP EGR circuit used according to the invention
- the internal combustion engine 1 comprises at least two cylinders, here four cylinders referenced 121 to 124 from the left of the figure.
- this engine is a direct injection internal combustion engine, especially diesel type, but this in no way discards any other type of internal combustion engine.
- Each cylinder comprises intake means with at least one intake valve controlling an intake manifold 2.
- the intake manifolds result in an intake manifold 3 fed by a supply duct 4 for intake air , such as compressed air.
- Each cylinder also comprises exhaust gas exhaust means with at least one exhaust valve controlling an exhaust manifold 5 leading to an exhaust manifold 6.
- the exhaust manifold 6 leads to a turbocharger 7 used for the compression of air and more particularly to the expansion turbine 8 of the turbocharger.
- the turbocharger is a single-input turbocharger.
- the invention is not limited to a single-input turbocharger, it is also applicable to twin-scroll turbochargers called “Twin scroll", or even to n-input turbochargers with n greater than or equal to 2.
- the gas evacuation 9 of the turbine 8 is conventionally connected to the exhaust line of the engine.
- the compressor 10 of the turbocharger 7 has an external air intake 1 1 fed by a supply line.
- the compressed air outlet of this compressor is connected to the supply duct 4 of the intake manifold 3 via a duct 12.
- the connection point between the ducts 4 and 12 is noted.
- a compressed air cooling exchanger 14 on the pipe 12, between the compressor 10 and the pipe 4.
- a transfer duct 15 makes it possible to circulate a portion of the compressed air leaving the compressor 10 towards the inlet of the turbine 8.
- this partial transfer duct originates on the duct 12, at a point of intersection 1 6 between the compressor and the cooling exchanger 14, and then connects, from a junction point 17, 18.
- the branch 18 leads to the inlet of the turbine through its junction at point 19 with the exhaust gas outlet 6.
- a duct 21 connects the branch 18 to the intake duct 4. It preferably passes through an exchanger 22 adapted to the cooling of the exhaust gas.
- the branch referenced 15 also comprises a nonreturn valve 20 which prevents the circulation of the fluids of the branches 18 and / or 21 to the compressor 10.
- This configuration thus makes it possible, during the operation of the engine, to take advantage of the zones of low exhaust pressure occurring punctually in the exhaust manifold to introduce compressed air into the turbine and thus to increase the flow rate of this turbine and consequently of the compressor. .
- This also allows for more efficient supercharging for low speeds and in particular to manage the transient phases with adapted proportional valve control strategies.
- the valve 23 is controlled in opening to introduce compressed air from the compressor 10 into the turbine 8, together the valve 24 is controlled closing.
- the compressed air leaving the compressor 10 circulates in the conduit 15 and then in the branch 18 to reach the exhaust gas inlet of the turbine 8 by providing a surplus of fluid to the turbine.
- the turbine is traversed not only by the exhaust gas from the manifold 5, but also by compressed air which is added to these gases.
- the rotation of the turbine is increased, which causes an increase in the rotation of the compressor and, consequently, an increase in the pressure of the compressed air coming out of this compressor.
- valves 23 and 24 can be replaced by a 3-way valve whose function will be equivalent to control the different flows.
- valve 24 (called EGR valve) can be placed upstream ( Figure 1) or downstream (not shown) of the heat exchanger 22.
- At least one portion of a duct communicating on one side with the inlet of the turbine 8 and the other with the admission of compressed air is used.
- This portion of conduit allows the passage of exhaust gas when the EGR valve 24 is open and the valve 23 is closed. Also, it allows the passage of compressed air when the valve 23 is open and the EGR valve
- FIG. 2 is distinguished from FIG. 1 by the introduction of a connecting line 15a between two junction points 17 and 25 with the duct 21.
- This connecting pipe is provided with valve means 23, such as a proportional valve, and a non-return valve 20.
- the compressed air of the Boost circuit passes through the exchanger 14 and then through the exchanger 22 of the EGR, the connecting pipe 15a and the branch 18.
- One of the advantages lies in the fact that the circulation of the The air of the countercurrent circuit Boost in the exchanger 22 of the EGR allows a scrubbing or / and unclogging thereof.
- FIGS. 3 and 4 which essentially comprise the same elements as those of FIG. 1, describe alternative arrangements according to the invention, which use a valve-type stop valve element including a valve box, to perform the various traffic functions, depending on whether you are in EGR or Boost.
- the skilled person will be able to choose the appropriate components.
- a valve 30, for example of the 3-way plug type, is interposed downstream of the EGR exchanger 22 on the EGR duct 21.
- the control of this valve 30 allows the passage of exhaust gas to the compressed air intake duct 4 by the junction point 13.
- a duct 15b, which connects the valve 30 to the branch 18, is then closed.
- valve 30 allows the passage of a compressed air portion through the conduit 15b to the branch 18 to "Boost" the turbine 8.
- the air "Boost” has passed through the exchanger 14 without going through the EGR exchanger 22.
- a variant represented by the duct 15c in dashed lines in FIG. 3, shows the valve 30 connected to the junction point 1 6 upstream of the exchanger 14 of the compressed air.
- the valve 30 is here not connected to the junction point 13.
- the air of the Boost circuit is here conducted directly towards the turbine 8.
- the exhaust gas of the EGR circuit passes through the exchangers 22 and 14, joining the junction point 16 of the compressed air line.
- FIG. 4 describes another variant in which the valve 30 is connected to the junction point 13 to drive the fluids passing through it to the compressed air intake duct 4.
- This three-way valve is supplied with air from the Boost circuit by a conduit connected to the junction point 16 upstream of the exchanger 14, and exhaust gas EGR by the branch 18.
- the common conduit EGR and "Boost" includes the branch 18 and the EGR exchanger. It is noted, as represented by reference 22a, that the EGR exchanger can be placed downstream of the valve 30 before the junction point 13. An anti-return valve 32 can be placed downstream of the exchanger 14 to block the gas exhaust in the case of EGR operation.
- At least a portion of the EGR duct is used to bring a portion of compressed air at the inlet of the turbine to obtain a "Boost" circuit.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1656168A FR3053397B1 (fr) | 2016-06-30 | 2016-06-30 | Dispositif et methode de controle de l'introduction d'air et de gaz d'echappement a l'admission d'un moteur a combustion interne suralimente |
PCT/EP2017/065832 WO2018002037A1 (fr) | 2016-06-30 | 2017-06-27 | Dispositif et methode de controle de l'introduction d'air et de gaz d'echappement a l'admission d'un moteur a combustion interne suralimente |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3478952A1 true EP3478952A1 (fr) | 2019-05-08 |
Family
ID=57121299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17732462.1A Withdrawn EP3478952A1 (fr) | 2016-06-30 | 2017-06-27 | Dispositif et methode de controle de l'introduction d'air et de gaz d'echappement a l'admission d'un moteur a combustion interne suralimente |
Country Status (6)
Country | Link |
---|---|
US (1) | US10704476B2 (fr) |
EP (1) | EP3478952A1 (fr) |
JP (1) | JP2019519719A (fr) |
CN (1) | CN109415987A (fr) |
FR (1) | FR3053397B1 (fr) |
WO (1) | WO2018002037A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3085439B1 (fr) * | 2018-08-30 | 2021-07-16 | Ifp Energies Now | Dispositif et systeme de controle d'un moteur a combustion interne avec double admission et balayage |
US11846257B2 (en) | 2021-05-03 | 2023-12-19 | Deere & Company | Engine system with reversible exhaust gas recirculation pump for controlling bypass flow |
US11591992B2 (en) | 2021-05-05 | 2023-02-28 | Deere & Company | Engine system with air pump for enhanced turbocharger air exchange |
US11572824B2 (en) | 2021-05-13 | 2023-02-07 | Deere & Company | Electrified engine boost components for mitigating engine stalling in a work vehicle |
US11536213B2 (en) | 2021-05-19 | 2022-12-27 | Deere & Company | Engine system with electrified air system components for managing emissions of nitrogen oxides in a work vehicle |
US11572673B2 (en) | 2021-06-25 | 2023-02-07 | Deere & Company | Work vehicle power system with decoupled engine air system components |
US11939929B2 (en) | 2021-08-19 | 2024-03-26 | Deere &Company | Engine electrified air system including electric turbocharger and exhaust gas recirculation pump |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2706696C2 (de) * | 1977-02-17 | 1982-04-29 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Verfahren zum Anlassen der Brennkammer einer Brennkraftmaschine |
FR2478736A1 (fr) | 1980-03-21 | 1981-09-25 | Semt | Procede et systeme de generation de puissance par moteur a combustion interne suralimente |
AT2540U1 (de) * | 1997-12-16 | 1998-12-28 | Avl List Gmbh | Brennkraftmaschine mit mindestens einem verdichter zur vorverdichtung der ansaugluft |
US6470864B2 (en) | 2000-03-27 | 2002-10-29 | Mack Trucks, Inc. | Turbocharged engine with exhaust gas recirculation |
AT5139U1 (de) * | 2000-08-31 | 2002-03-25 | Avl List Gmbh | Verfahren und vorrichtung zum betreiben einer brennkraftmaschine |
FR2900198A1 (fr) * | 2006-04-21 | 2007-10-26 | Renault Sas | Moteur pour vehicule automobile |
US8096125B2 (en) * | 2009-12-23 | 2012-01-17 | Ford Global Technologies, Llc | Methods and systems for emission system control |
US8099957B2 (en) * | 2010-03-31 | 2012-01-24 | Ford Global Technologies, Llc | Dual-inlet supercharger for EGR flow control |
US9163555B2 (en) * | 2012-12-06 | 2015-10-20 | Ford Global Technologies, Llc | Compressor bypass turbine-generator |
US9556771B2 (en) * | 2013-01-16 | 2017-01-31 | Ford Global Technologies, Llc | Method and system for catalyst temperature control |
US9080506B2 (en) * | 2013-08-13 | 2015-07-14 | Ford Global Technologies, Llc | Methods and systems for boost control |
US20180066610A1 (en) * | 2016-09-06 | 2018-03-08 | Borgwarner Inc. | Dedicated egr engine with dedicated loop turbocharger |
-
2016
- 2016-06-30 FR FR1656168A patent/FR3053397B1/fr not_active Expired - Fee Related
-
2017
- 2017-06-27 US US16/308,903 patent/US10704476B2/en active Active
- 2017-06-27 EP EP17732462.1A patent/EP3478952A1/fr not_active Withdrawn
- 2017-06-27 CN CN201780039801.0A patent/CN109415987A/zh active Pending
- 2017-06-27 JP JP2018567066A patent/JP2019519719A/ja not_active Withdrawn
- 2017-06-27 WO PCT/EP2017/065832 patent/WO2018002037A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
US20190136772A1 (en) | 2019-05-09 |
JP2019519719A (ja) | 2019-07-11 |
FR3053397A1 (fr) | 2018-01-05 |
US10704476B2 (en) | 2020-07-07 |
WO2018002037A1 (fr) | 2018-01-04 |
FR3053397B1 (fr) | 2020-06-19 |
CN109415987A (zh) | 2019-03-01 |
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