EP3353400A1 - Système de moteur avec compresseur électrique pilote - Google Patents
Système de moteur avec compresseur électrique piloteInfo
- Publication number
- EP3353400A1 EP3353400A1 EP16781507.5A EP16781507A EP3353400A1 EP 3353400 A1 EP3353400 A1 EP 3353400A1 EP 16781507 A EP16781507 A EP 16781507A EP 3353400 A1 EP3353400 A1 EP 3353400A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- electric compressor
- pressure
- setpoint
- bypass valve
- 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- Withdrawn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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
- F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
-
- 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
-
- 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
- F02B37/162—Control of the pumps by bypassing charging air by bypassing, e.g. partially, intake air from pump inlet to pump outlet
-
- 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
-
- 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 present invention relates to the field of internal combustion engines. TECHNOLOGICAL BACKGROUND
- JP 2014 238034 describes an engine system, comprising:
- an intake system for supplying air to the engine comprising: an electric compressor,
- control the intake system for the latter In response to the charge of the engine, control the intake system for the latter to bring the engine air at a pressure greater than atmospheric pressure.
- the bypass valve is a continuous valve that can take an open position, a closed position and an intermediate position.
- the control system is intended to place the bypass valve in the intermediate position in the absence of charge setpoint, and to close it on arrival of a charge setpoint.
- the invention aims to provide an engine system for a rapid rise in pressure at the engine inlet.
- an intake system for supplying air to the engine comprising:
- control system is further intended to close the bypass valve of the electric compressor in the absence of charge setpoint.
- the bypass valve of the electric compressor is already closed, so that the electric compressor immediately receives all the input air. It has been found in the context of the invention that keeping the bypass valve of the electric compressor closed in the absence of a booster setpoint did not have a negative impact on the operation of the engine. Indeed, the loss of load resulting from the passage of air by the electric compressor is easily compensated by a slightly larger opening of the throttle valve placed just upstream of the engine.
- bypass valve of the electric compressor is an all-or-nothing or proportional valve, passive or piloted.
- control system is intended to obtain an air pressure setpoint at the engine inlet and to consider the absence of a boost setpoint when the pressure setpoint is less than or equal to a threshold.
- the threshold is less than or equal to the natural engine boost pressure, for example equal to 1013.25 hPa.
- the engine's natural boost pressure depends on the engine and the atmospheric altitude / condition
- an intake system for supplying air to the engine comprising: an electric compressor,
- the method being characterized by the closure of the bypass valve of the electric compressor in the absence of charge setpoint.
- bypass valve of the electric compressor is an all-or-nothing valve, or proportional, passive or piloted.
- the method comprises obtaining an air pressure setpoint at the engine inlet and the absence of a boost setpoint corresponds to the fact that the pressure setpoint is less than or equal to a threshold.
- the threshold is less than or equal to the natural boost pressure of the engine.
- an intake system for supplying air to the engine comprising:
- Figure 1 is a schematic view of an engine system according to the invention.
- Figure 2 is a timing chart showing the evolution over time of a pressure setpoint and the engine inlet pressure.
- the engine system 100 is particularly intended for a motor vehicle.
- the engine system 100 firstly comprises an internal combustion engine 102.
- the engine 102 may be for example a gasoline engine or a diesel engine.
- the engine system 100 further comprises an intake system 104 for supplying air to the engine 102, for carrying out the combustion.
- the intake system 104 first includes an air inlet 106, through which outside air, at atmospheric pressure, is intended to enter.
- the intake system 104 further comprises an air filter 108 placed downstream of the air inlet 106.
- the air filter 108 is intended to filter the air sucked by the engine.
- the intake system 104 further comprises an electric compressor 110 placed downstream of the air filter 108.
- the term electric compressor 110 an air compressor, volumetric or not and for example centrifugal or radial, driven by an electric motor, for the purpose of supercharging a heat engine.
- the electric motor is an asynchronous DC or AC motor, or any type of electric motor of the same type. More specifically, according to one embodiment of the invention, the electric motor is a variable reluctance motor (also called SRM machine for Switched Reluctance Motor according to English terminology).
- the motor is a permanent magnet motor.
- the intake system 104 further comprises a bypass 112 of the electric compressor 110, allowing the air to bypass the electric compressor 110.
- the intake system 104 further comprises a bypass valve 114 of the electric compressor 110, placed on the bypass 112.
- the bypass valve 114 makes it possible to regulate the air flow in the bypass 112, and thus also through the compressor 110.
- the valve 114 is an on-off valve, proportional, passive or controlled.
- the intake system 104 further comprises a compressor 116 of a turbocharger 116, 128.
- the compressor 116 is placed downstream of the electric compressor 110.
- the compressor 116 is intended to increase the air pressure to allow a supercharging of the motor 102.
- the intake system 104 further includes a bypass 118 of the compressor 116, allowing the air to bypass the compressor 116.
- the intake system 104 further comprises a bypass valve 120 of the compressor 116, placed on the bypass 118.
- the bypass valve 120 protects the components of the intake line ("overpressure phenomenon").
- the bypass valve 120 is preferably an all-or-nothing valve.
- the intake system 104 further comprises a cooler 122 placed downstream of the compressor 116.
- the cooling 122 is intended to cool the air under pressure before it arrives in the engine 102.
- the intake system 104 further comprises an intake valve 124, also called “butterfly valve” or simply “butterfly” (in English: “throttle”), for adjusting the air flow entering the engine 102.
- the inlet valve 124 is preferably a continuous valve.
- the intake system 104 further includes an exhaust system 126 for exhausting exhaust gases from the engine 102.
- the exhaust system 126 firstly comprises a turbine 128 of the turbocharger 116, 128, placed downstream of the heat engine 102.
- the turbine 128 is intended to be driven by the exhaust gases to generate energy, this energy being supplied to the compressor 116 for its operation.
- the exhaust system 126 further comprises a bypass 130 of the turbine 128, allowing the exhaust gases to bypass the turbine 128.
- the exhaust system 126 further comprises a bypass valve 132 of the turbine 128, placed on the bypass 130.
- the bypass valve 132 makes it possible to adjust the air flow in the bypass 130 and therefore also through the turbine 128.
- the bypass valve 132 is preferably a continuous valve.
- the exhaust system 126 further comprises a catalyst 134 placed downstream of the turbine 128 and intended to post-treat the exhaust gases to meet the emission standard.
- the exhaust system 126 further includes an exhaust gas outlet 136 located downstream of the catalyst 134.
- the motor system 100 further comprises a control system 138, (for example, the engine control unit, called "Engine Control Unit” or ECU).
- the control system 138 comprises for example a computer (also called computer) for implementing a computer program.
- the control system 138 is intended to obtain a charge setpoint of the engine 102 and, in response to the boosting setpoint of the engine 102, control the intake system 104 so that the latter brings the engine 102 air to a pressure above atmospheric pressure.
- the control system 138 is intended to obtain an air pressure setpoint at the input of the heat engine 102.
- the pressure setpoint when the pressure setpoint is greater than a predetermined threshold corresponding to the atmospheric pressure, the pressure setpoint forms a booster setpoint of the motor 102.
- the predetermined threshold is equal to the engine's natural boost pressure.
- the C pressure setpoint is assumed to be less than or equal to the predetermined threshold P 0.
- the control system 138 keeps open the bypass valve 132 of the turbocharger 116, 128, so that the turbocharger 116, 128 is inactive.
- the control system 138 may further maintain the electric compressor 110 in reduced activity, or stopped. When in reduced activity, the electric compressor 110 rotates for example at 6000 rpm said idle speed.
- the pressure set point C increases and becomes greater than the predetermined threshold P 0 .
- the pressure setpoint C then forms a booster setpoint of the engine 102.
- the control system 138 closes the bypass valve 132 of the turbine 128.
- the exhaust gas passes through the turbine 128, which then activates the compressor 116.
- the compressor 116 has a fairly high start-up time, in particular corresponding to the time it takes the engine 102 to provide a sufficient flow of exhaust gas for the turbine 128 to activate the compressor 116 at the desired speed. .
- the control system 138 further activates the electric compressor 110, by rotating for example at 70,000 rpm.
- the inlet pressure P of the motor 102 in the case of the invention is represented in long dotted lines.
- the inlet pressure P 'of the engine 102 in the case where the bypass valve 114 would have been left open before instant ⁇ and closed at time T is shown in short dashed lines.
- the time between the instants T and ' is generally between 100 ms and 150 ms.
- the electric compressor 110 is slowed down, until it is placed in reduced activity or stopped at a time T 2 by the control system 138.
- the Bypass valve 114 of electric compressor 110 is opened by control system 138 to allow inlet air to reach compressor 116.
- the pressure setpoint C decreases and becomes lower than the predetermined threshold P 0 , which corresponds to a lack of charge setpoint.
- the control system 138 then opens the bypass valve 132 to deactivate the turbocharger 116, 128. While the pressure set point C is less than or equal to the predetermined threshold P 0 , the control system 138 closes the bypass valve 114 of the compressor 110 to allow the electric compressor 110 to receive all the input air at the next boost setpoint. In the example described, the control system 138 closes the bypass valve 114 as soon as the pressure setpoint C becomes lower than or equal to the predetermined threshold P 0 .
- the electric compressor could be placed downstream of the turbocharger compressor, rather than upstream.
- the predetermined threshold could vary. For example, it could correspond to the actual atmospheric pressure measured by an input sensor of the intake system.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1558882A FR3042222B1 (fr) | 2015-09-21 | 2015-09-21 | Systeme de moteur avec compresseur electrique pilote |
PCT/FR2016/052367 WO2017051101A1 (fr) | 2015-09-21 | 2016-09-19 | Système de moteur avec compresseur électrique pilote |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3353400A1 true EP3353400A1 (fr) | 2018-08-01 |
Family
ID=55236499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16781507.5A Withdrawn EP3353400A1 (fr) | 2015-09-21 | 2016-09-19 | Système de moteur avec compresseur électrique pilote |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3353400A1 (fr) |
FR (1) | FR3042222B1 (fr) |
WO (1) | WO2017051101A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3066784A1 (fr) * | 2017-05-29 | 2018-11-30 | Valeo Systemes De Controle Moteur | Compresseur electrique avec vanne de contournement |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10303391B4 (de) * | 2003-01-29 | 2016-12-15 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Antriebseinheit mit einem Verbrennungsmotor |
JP3952974B2 (ja) * | 2003-03-17 | 2007-08-01 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
JP4124143B2 (ja) * | 2004-03-04 | 2008-07-23 | トヨタ自動車株式会社 | 電動機付過給機の制御装置 |
-
2015
- 2015-09-21 FR FR1558882A patent/FR3042222B1/fr active Active
-
2016
- 2016-09-19 EP EP16781507.5A patent/EP3353400A1/fr not_active Withdrawn
- 2016-09-19 WO PCT/FR2016/052367 patent/WO2017051101A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2017051101A1 (fr) | 2017-03-30 |
FR3042222A1 (fr) | 2017-04-14 |
FR3042222B1 (fr) | 2019-08-30 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 20180403 |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ELMERICH, BASTIEN Inventor name: MIGUEL SANCHEZ, ADRIAN Inventor name: COUSIN, FREDERIC |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20200120 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20200731 |