EP2066894A1 - Procede d'optimisation des performances d'un moteur a combustion interne d'un vehicule, tel qu'un vehicule automobile - Google Patents
Procede d'optimisation des performances d'un moteur a combustion interne d'un vehicule, tel qu'un vehicule automobileInfo
- Publication number
- EP2066894A1 EP2066894A1 EP07848354A EP07848354A EP2066894A1 EP 2066894 A1 EP2066894 A1 EP 2066894A1 EP 07848354 A EP07848354 A EP 07848354A EP 07848354 A EP07848354 A EP 07848354A EP 2066894 A1 EP2066894 A1 EP 2066894A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- vehicle
- temperature
- performance
- critical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 7
- 239000003570 air Substances 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000001186 cumulative effect Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012080 ambient air Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 14
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000001955 cumulated effect Effects 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005050 thermomechanical fatigue Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
-
- 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
- F02D41/1446—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 exhaust temperatures
- F02D41/1447—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 exhaust temperatures with determination means using an estimation
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- 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
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D2041/0265—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to decrease temperature of the exhaust gas treating apparatus
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2441—Methods of calibrating or learning characterised by the learning conditions
Definitions
- the present invention relates to a method for optimizing the performance of an internal combustion engine of a vehicle, such as a motor vehicle.
- US Pat. No. 4,399,774 describes a method for optimizing the performance of a diesel engine by controlling the cooling water temperature of the engine according to its operating conditions, such as the load and the speed of this engine.
- the object of the invention is to overcome the above disadvantage of the known optimization method.
- the invention proposes a process for optimizing the performance of an internal combustion engine of a vehicle, such as a motor vehicle, as a function of the temperature of the engine exhaust gases, and which is characterized in that it increments a time counter each time the engine enters a critical operating zone defined by the speed, the injected fuel flow rate, the intake air flow rate, the upstream intake air temperature Compressor, the intake air inlet block temperature, the engine water temperature and the ambient air pressure corresponding to the highest temperatures of the exhaust gases and to change the adjusting the engine in an exhaust gas temperature reduction direction when the engine has operated in the critical zone for a determined cumulative duration.
- the critical operating zone is defined for exhaust temperatures greater than 800 ° C.
- the cumulative time is about 20 hours.
- Engine tuning changes relate to fuel injection and / or fuel injection pressure and / or the vehicle's intake air flow rate.
- the method also comprises introducing a determined time delay, for example about 10 s, between the moment when the motor enters the critical zone and the one where the counter must be incremented.
- the engine is of the turbocharged diesel type.
- the invention will be described in the application to an internal combustion engine of a motor vehicle of the turbocharged diesel type, but it can also be applied to any other type of engine, such as a gasoline engine.
- reference numeral 1 designates a computer on board the vehicle and connected to six sensors 2, 3, 4, 5, 6, 7, respectively, of the speed, the flow rate of the intake air, and the air temperature. admitted air line inlet motor, intake air temperature inlet motor, atmospheric pressure and the engine water temperature and relative to the operating conditions of the engine.
- the sensor 2 is thus able to supply the computer 1 with an electrical signal representative of the speed of rotation of the crankshaft of the engine while the sensor 3 is able to supply the computer with an electrical signal representative of the flow of air admitted, while the sensor 4 is able to provide an electrical signal representative of the inlet temperature of the engine air line, while the sensor 5 is able to provide an electrical signal representative of the intake air temperature at the engine inlet, while the sensor 6 is able to provide an electrical signal representative of the atmospheric pressure, while the sensor 7 is able to provide an electrical signal representative of the engine water temperature.
- the parts located on the exhaust face of the engine are subject to the stresses of the engine exhaust gas temperature which can damage by creep or oxidation at very high temperatures of the exhaust gas and / or by thermomechanical fatigue.
- the object of the invention is to increase the performance of the engine creating an increase in the temperature of the exhaust gas and allow the use of less noble materials constituting the parts concerned above by limiting the duration of application of the high temperatures of the exhaust gases to an acceptable limit for the reliability of these parts and to apply a decline in engine performance only to users using this engine under particularly severe conditions.
- the information provided by the sensors 2 to 7 and described above are interpreted in the computer 1 as the temperatures of the gases.
- a critical operating zone of the motor and a time counter CT is incremented by the computer 1 whenever the information provided by the sensors 2 to 7 and described above are interpreted in the computer 1 as Exhaust gas temperatures corresponding to the highest exhaust gas temperatures.
- the computer is able to control the tilting or the modification of the operating settings of the engine to a new calibration, such as the injection fuel, the fuel injection pressure, thereby lowering the temperature of the exhaust gas and, therefore, the performance of the engine.
- the critical operating zone is defined for exhaust gas temperatures greater than 800 ° C., and the performance of the engine can be reduced, under the conditions described above, by about 7%.
- the computer 1 is also able to introduce a determined time delay, set for example at 10 s, between the moment when the motor enters the critical operating zone and the moment when the CT counter is incremented.
- the counter has been shown as a discrete component, but it is understood that its function can be performed directly by the computer.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Air-Conditioning For Vehicles (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0653995A FR2906570B1 (fr) | 2006-09-28 | 2006-09-28 | Procede d'optimisation des performances d'un moteur a combustion interne d'un vehicule, tel qu'un vehicule automobile |
| PCT/FR2007/051983 WO2008037913A1 (fr) | 2006-09-28 | 2007-09-20 | Procede d'optimisation des performances d'un moteur a combustion interne d'un vehicule, tel qu'un vehicule automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2066894A1 true EP2066894A1 (fr) | 2009-06-10 |
| EP2066894B1 EP2066894B1 (fr) | 2011-05-18 |
Family
ID=37814514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07848354A Ceased EP2066894B1 (fr) | 2006-09-28 | 2007-09-20 | Procede d'optimisation des performances d'un moteur a combustion interne d'un vehicule, tel qu'un vehicule automobile |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2066894B1 (fr) |
| AT (1) | ATE510121T1 (fr) |
| FR (1) | FR2906570B1 (fr) |
| WO (1) | WO2008037913A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2926109A1 (fr) * | 2008-01-08 | 2009-07-10 | Renault Sas | Procede de regulation de la temperature des gaz d'echappement d'un moteur a combustion interne. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4433631B4 (de) * | 1994-09-21 | 2004-06-17 | Robert Bosch Gmbh | Verfahren zur Bildung eines Signals bezüglich einer Temperatur im Abgassystem einer Brennkraftmaschine |
| JP2002004908A (ja) * | 2000-06-19 | 2002-01-09 | Honda Motor Co Ltd | 車両の駆動力制御装置 |
| GB2389673B (en) * | 2001-01-31 | 2004-12-08 | Cummins Inc | System for controlling engine exhaust temperature |
| DE10147619A1 (de) * | 2001-09-27 | 2003-07-10 | Volkswagen Ag | Verfahren zum Schutz von Abgasreinigungssystemen von Brennkraftmaschinen vor thermischer Überbelastung |
-
2006
- 2006-09-28 FR FR0653995A patent/FR2906570B1/fr not_active Expired - Fee Related
-
2007
- 2007-09-20 EP EP07848354A patent/EP2066894B1/fr not_active Ceased
- 2007-09-20 WO PCT/FR2007/051983 patent/WO2008037913A1/fr not_active Ceased
- 2007-09-20 AT AT07848354T patent/ATE510121T1/de not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008037913A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE510121T1 (de) | 2011-06-15 |
| EP2066894B1 (fr) | 2011-05-18 |
| FR2906570B1 (fr) | 2008-12-19 |
| FR2906570A1 (fr) | 2008-04-04 |
| WO2008037913A1 (fr) | 2008-04-03 |
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