EP2250360A1 - Systeme de controle d'un moteur thermique a recirculation des gaz d'echappement - Google Patents
Systeme de controle d'un moteur thermique a recirculation des gaz d'echappementInfo
- Publication number
- EP2250360A1 EP2250360A1 EP09720949A EP09720949A EP2250360A1 EP 2250360 A1 EP2250360 A1 EP 2250360A1 EP 09720949 A EP09720949 A EP 09720949A EP 09720949 A EP09720949 A EP 09720949A EP 2250360 A1 EP2250360 A1 EP 2250360A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control system
- exhaust
- duct
- valve
- closed
- 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- Withdrawn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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 47
- 239000007789 gas Substances 0.000 claims description 32
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 7
- 230000003134 recirculating effect Effects 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000008246 gaseous mixture Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000008240 homogeneous mixture Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- 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
- F02D41/0072—Estimating, calculating or determining the EGR rate, amount or flow
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1448—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an exhaust gas 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
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1418—Several control loops, either as alternatives or simultaneous
-
- 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
- F02M26/23—Layout, e.g. schematics
-
- 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 generally relates to combustion engines internal combustion for a motor vehicle, using an exhaust gas recirculation system, known as EGR system (EGR is the English initials set for "Exhaust Gas Recirculation” ).
- EGR exhaust gas recirculation system
- An internal combustion engine thus conventionally comprises one or more cylinders each forming a combustion chamber 1.
- a piston 2 slides in a reciprocating rectilinear motion in a cycle which will be described in the following. This movement is then converted into a continuous rotational movement via a connecting rod 3 connecting the piston 2 to the crankshaft 4.
- Each cylinder is further closed by a cylinder head 5 equipped with two types of valves: the valves 6 of intake connecting the intake duct 7 to the combustion chamber 1, and allowing the combustion chamber to be fed with an air / fuel mixture (in the case of a petrol engine with indirect injection), or with air (in the case of a diesel engine or gasoline direct injection), and a second exhaust valve 8, connecting the combustion chamber 1 to the exhaust duct 9, so as to allow the evacuation of exhausted flue gas to the exhaust.
- the positioning of the valves is controlled by a camshaft (not shown) connected to the crankshaft 4.
- the control of the spark plug 10 is performed by an electronic control unit 11 which also receives information corresponding to the angular position of the crankshaft 4 via an angle sensor 12.
- the decomposition of a combustion cycle for a conventional diesel engine is quite similar to that described above, except the first and third time. Indeed, during the first time, only air is admitted into the combustion chamber 1.
- the operation of the diesel engine is based on the auto-ignition of diesel. It is thus not necessary to provide a spark plug to cause combustion.
- an injector 10 makes it possible to introduce into the combustion chamber fuel that mixes with the compressed air. Self-ignition is obtained as a result of the heating of the air under the effect of compression.
- the injector 10 ' is also controlled by an electronic control unit 11 in relation to the angular position of the crankshaft 4.
- HCCI engines In addition to the two major families of internal combustion engines previously described, the so-called HCCI engines (English initials for "Homogeneous Charge Compression Ignition”) are also known, exhibiting characteristics derived from both diesel engines of the same type. Conventional (ie self-ignition combustion), and indirect injection engines (ie, achieving a homogeneous mixture of air and fuel). In a combustion cycle for an HCCI engine, the third time corresponds only to the combustion of the homogeneous mixture compressed strongly enough to obtain the point of auto-ignition. Since there is no direct trigger for combustion (spark plug or injector type), combustion control for this type of HCCI engine is more difficult to achieve.
- the amount of nitrogen oxides produced can be reduced by mixing the gas admitted by the engine with an inert gas which will slow down the rate of combustion and absorb the calories, which will result in a decrease in the temperature of the engine. combustion.
- the principle of an EGR system is to take a part of the exhaust gases, including inert gases, to recirculate in the intake duct.
- An EGR system is thus conventionally constituted of a gas recirculation duct interposed between the exhaust duct and the inlet duct, of a so-called EGR valve, allowing, under the control of the engine control electronic module, to adjust the flow of the burned gas that will be redirected to the intake duct.
- the EGR system may also include a heat exchanger for cooling recirculated flue gas, thereby avoiding an undesirable increase in particle production.
- the HCCI engines described above also include an EGR system, but for different reasons. Indeed, an HCCI engine has extremely low emissions of nitrogen oxides. However, the EGR system will be used here permanently to slow down the ignition conditions of the air / fuel mixture.
- the present invention aims to overcome these disadvantages. More specifically, the present invention relates to a control system of an internal combustion engine for a motor vehicle, comprising a combustion chamber, an intake duct to allow a gas mixture containing air to enter the combustion chamber. the combustion chamber, an exhaust duct for allowing the escape of burnt gases from the combustion chamber, and an exhaust gas recirculation system comprising an exhaust gas recirculation duct interposed between the exhaust duct; exhaust and the intake duct, and an EGR valve adapted to adjust the flow of exhaust gas which will be redirected to the intake duct via the recirculation duct, characterized in that it further comprises a valve exhaust back-pressure in the exhaust duct downstream of the exhaust gas recirculation duct, able to regulate the flow of the non-redirected exhaust gases; rs the recirculation duct, means for estimating the EGR rate, and a sensor for measuring the exhaust pressure, in that the operation of said EGR valve is slaved in a first closed-loop control system as a function
- the system may further comprise a heat exchanger, adapted to cool the recirculating exhaust gas in the exhaust gas recirculation duct, and an intake temperature sensor, the operation of said heat exchanger being enslaved in a third closed-loop control system according to the difference between the intake temperature value measured by the temperature sensor and a set value of the predetermined intake temperature.
- the system may also further comprise a valve or an intake butterfly in the intake duct upstream of the exhaust gas recirculation duct, able to regulate the flow of air entering the duct.
- a complete system may therefore comprise up to four separate closed-loop control systems each acting on a particular member of the engine (valve or heat exchanger) according to a single observation parameter (temperature, pressure or EGR rate depending on the case).
- FIG. 2 diagrammatically illustrates a possible embodiment of a control system for an internal combustion engine according to the invention
- FIG. 3 diagrammatically represents the general principle of servocontrol of the different control loops present for the control system of FIG. 2;
- FIG. 4 details a closed loop of proportional-integral type;
- FIG. 5 illustrates simulation results obtained for the motor control system of FIG. 2.
- FIG. 2 the components of a control system for an internal combustion engine according to a preferred embodiment of the invention, particularly suitable for an engine type HCCI, will now be described.
- the combustion chamber 1 of one of the cylinders of the engine inside which can slide the piston 2 connected to the crankshaft (not shown) via the rod 3.
- This chamber of combustion can be put in relation on the one hand, with the intake duct 7, and on the other hand, with the exhaust duct 9, according to the respective positions of the intake valve 6 and the valve of Exhaust 8.
- the system further comprises an EGR system conventionally comprising an exhaust gas recirculation duct 13 interposed between the exhaust duct 9 and the duct intake 7, and an EGR valve 14 for adjusting the flow of gas recirculation.
- the control system also comprises a counter pressure valve 15 located, as shown in Figure 2, in the exhaust duct 9 downstream of the inlet of the recirculation duct 13.
- the operation on the one hand of the EGR valve 14, and on the other hand the backpressure valve 15, is controlled in two separate closed-loop control systems, one being controlled by an estimate of the EGR rate, and the other by a measurement of the exhaust pressure.
- the control system comprises means 16 for estimating the EGR rate.
- the control system comprises a sensor 17 for measuring the exhaust pressure.
- the EGR system further comprises a heat exchanger 18 whose role is to cool the exhaust gas recirculation.
- a heat exchanger 18 whose role is to cool the exhaust gas recirculation.
- the control system advantageously comprises an intake valve 20 located in the intake duct 7 upstream of the outlet of the recirculation duct 13, this intake valve being suitable to control the flow of fresh air that will be mixed with the recirculating gases.
- the operation of the intake valve is advantageously also controlled by a fourth closed-loop control system whose servocontrol is performed from a measurement of the intake pressure delivered by a sensor 21 for measuring the pressure of the pressure. 'admission.
- the sensors 19 and 21 and the means 16 for estimating the EGR rate are preferably placed at an intake manifold 22 within which the gaseous mixture will be homogenized.
- the sensor 17 for measuring the exhaust pressure is preferably placed at a reserve 23. For other embodiments that do not have an intake manifold 22 or a reserve 23 at the outlet, the Sensors or estimator will be placed directly at the intake and / or exhaust ducts.
- Each closed-loop control system comprises an actuator (the exhaust back-pressure valve 15, the EGR valve 14, the exhaust valve 15 respectively). heat exchanger 18 and the inlet valve 20)), all four actuators having been schematized here in the form of an actuator block B 2 .
- a variable will be observed (measured or estimated) by an appropriate sensor or estimating means.
- the set of four sensors / estimators consisting respectively of the exhaust pressure measurement sensor 17, the EGR rate estimation means 16, the intake temperature measurement sensor 19 and the measurement sensor 21 of the inlet pressure, is schematized here in the form of a sensor block Bi.
- the observed values are each compared to a setpoint value (respectively denoted PE_C, TEGR_C, TA C and PA_C).
- each actuator will receive from its associated corrector a command that will be a function of the measured value and the set value, and act accordingly on the engine.
- the set of control systems (including at least the first system for the control of the EGR valve and the second system for the control of the exhaust valve) will act under the control of a timing member C which samples and rhythm the flow of instructions coming out of the correctors.
- the corrector of each closed-loop control system may be, by way of non-limiting example, of the proportional-integral (P1) or proportional-integral-derivative (PID) type.
- P1 proportional-integral
- PID proportional-integral-derivative
- An ideal PID corrector is the sum of three terms, expressed according to the following Laplacian relation:
- the first term represents the proportional action - the second term represents the integral action - -
- the third term represents the derivative action K d - p
- a corrector of type Pl contains only the first two terms of the preceding relation.
- FIG. 4 illustrates a particularly advantageous embodiment of a discrete type P1 corrector which can be used for each closed loop of the regulation systems described above.
- the corrector contains the following elements:
- a first amplifier Ai which amplifies the difference c -m between the set value c and the measured value.
- a second amplifier A 2 of gain Kp which represents the gain of the proportional action.
- a third amplifier A 3 of gain K i which represents the gain of the integral action.
- the corrector as shown in Figure 4 advantageously comprises a saturation block A ⁇ which allows to integrate the limits of the controls of the actuator considered.
- a saturation block A ⁇ which allows to integrate the limits of the controls of the actuator considered.
- the command u corresponding to the correction, is between the minimum value u m i n and the maximum value u max .
- the corrector preferably comprises a second saturation block A 7 , similar in principle to the block A 1, and which saturates the action of the integral. Indeed, in the application considered, the actuators commands must be saturated. If an instruction unrealizable by the system is requested, it may be that the corrector imposes a command higher than the limits of the actuator. Then, the command applied is the limit command. However, the integral action continues to integrate and imposes a command more and more strong.
- the second block A 7 is accordingly an "anti windup" device.
- timing device C As indicated above, it is the timing device C that will sample and rhythm the flow of instructions coming out of the correctors.
- the timing can be obtained:
- the sampling period is fixed.
- the sampling period is then set by the rotational speed of the motor. It is also possible to alternate the two types of timing as a function, for example, of the engine speed. Thus, when the engine is running at low speed, the calculations to be made are fewer. Synchronous sampling with the motor can therefore be used. For the strongest regimes, it is preferred to perform the calculations at a fixed rate, chosen so as to save the calculation time.
- this same timing device will also make it possible to manage the priorities between the different (at least two) closed loop control systems and define in the case where the correctors are dependent on each other, to do these calculations in the most judicious order. Also, for each instruction on the variables delivered by a control unit not shown, commands for the actuators are advantageously developed in a predefined order.
- FIG. 5 illustrates the simulation results obtained for a control system comprising the four closed-loop control systems described above. More precisely :
- the first diagram starting from the top of the figure illustrates in dashed lines the time evolution of the setpoint value PA C associated with the closed-loop control system controlling the operation of the intake valve or butterfly, and in solid line temporal evolution of the measured value P A _ m ;
- the second diagram illustrates the corresponding change in the opening rate of the intake valve or butterfly
- the third diagram illustrates in dashed lines the time evolution of the setpoint value PE C associated with the closed-loop control system controlling the operation of the exhaust back-pressure valve, and in full line the time evolution of the measured value PE_ m ;
- the fourth diagram illustrates the corresponding change in the opening rate of the backpressure valve
- the fifth diagram illustrates in dashed lines the time evolution of the setpoint value EGR rate _c associated with the closed-loop control system controlling the operation of the EGR valve, and in full line the time evolution of the measured value EGR rate _m
- the sixth diagram illustrates the corresponding evolution of the opening rate of the EGR valve
- the seventh diagram illustrates in dashed lines the temporal evolution of the setpoint value TA C associated with the closed-loop control system controlling the operation of the heat exchanger, and the solid line with the time evolution of the measured value T A _ m ;
- the control system according to the invention is used for an on-board real-time control. It constantly acts on the engine parameters so that it provides optimal performance at all times. Thus, the system is free to act properly to stabilize the engine.
- control system is particularly indicated for conventional diesel engines or for HCCI engines.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0851567A FR2928702B1 (fr) | 2008-03-11 | 2008-03-11 | Systeme de controle d'un moteur thermique a recirculation des gaz d'echappement |
| PCT/FR2009/050161 WO2009112727A1 (fr) | 2008-03-11 | 2009-02-03 | Systeme de controle d'un moteur thermique a recirculation des gaz d'echappement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2250360A1 true EP2250360A1 (fr) | 2010-11-17 |
Family
ID=39865115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09720949A Withdrawn EP2250360A1 (fr) | 2008-03-11 | 2009-02-03 | Systeme de controle d'un moteur thermique a recirculation des gaz d'echappement |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2250360A1 (fr) |
| FR (1) | FR2928702B1 (fr) |
| WO (1) | WO2009112727A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116860026A (zh) * | 2023-06-15 | 2023-10-10 | 西南科技大学 | 一种基于改进超扭曲算法的高空台进气压力控制系统 |
| CN117432533B (zh) * | 2023-12-18 | 2024-03-19 | 潍柴动力股份有限公司 | 一种排气节流阀控制方法、装置、设备和汽车 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5732688A (en) * | 1996-12-11 | 1998-03-31 | Cummins Engine Company, Inc. | System for controlling recirculated exhaust gas temperature in an internal combustion engine |
| US5771867A (en) * | 1997-07-03 | 1998-06-30 | Caterpillar Inc. | Control system for exhaust gas recovery system in an internal combustion engine |
| WO1999042718A1 (fr) * | 1998-02-23 | 1999-08-26 | Cummins Engine Company, Inc. | Moteur a allumage par compression d'une charge prealablement melangee, et a reglage optimal de la combustion |
| JP2003083034A (ja) * | 2001-09-14 | 2003-03-19 | Mitsubishi Motors Corp | 排気浄化装置 |
| FR2902466A1 (fr) * | 2006-06-19 | 2007-12-21 | Renault Sas | Systeme de recirculation de gaz d'echappement pour moteur a combustion du type diesel suralimente et procede de commande d'un tel moteur |
| US7231906B1 (en) * | 2006-06-27 | 2007-06-19 | Gm Global Technology Operations, Inc. | Simultaneous EGR correction and individual cylinder combustion phase balancing |
-
2008
- 2008-03-11 FR FR0851567A patent/FR2928702B1/fr active Active
-
2009
- 2009-02-03 WO PCT/FR2009/050161 patent/WO2009112727A1/fr not_active Ceased
- 2009-02-03 EP EP09720949A patent/EP2250360A1/fr not_active Withdrawn
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2009112727A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009112727A1 (fr) | 2009-09-17 |
| FR2928702A1 (fr) | 2009-09-18 |
| FR2928702B1 (fr) | 2013-08-30 |
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