EP1777397A1 - Verfahren und System zum Schätzen des Druckes im Ansaugkrümmer einer Verbrennungskraftmaschine - Google Patents

Verfahren und System zum Schätzen des Druckes im Ansaugkrümmer einer Verbrennungskraftmaschine Download PDF

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Publication number
EP1777397A1
EP1777397A1 EP06301084A EP06301084A EP1777397A1 EP 1777397 A1 EP1777397 A1 EP 1777397A1 EP 06301084 A EP06301084 A EP 06301084A EP 06301084 A EP06301084 A EP 06301084A EP 1777397 A1 EP1777397 A1 EP 1777397A1
Authority
EP
European Patent Office
Prior art keywords
pressure
rfa
cyl
engine
value
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
Application number
EP06301084A
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English (en)
French (fr)
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EP1777397B1 (de
Inventor
Pascal Emery
Stéphane PRADO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
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Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP1777397A1 publication Critical patent/EP1777397A1/de
Application granted granted Critical
Publication of EP1777397B1 publication Critical patent/EP1777397B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0406—Intake manifold pressure
    • F02D2200/0408—Estimation of intake manifold pressure

Definitions

  • the present invention relates to the estimation of the pressure prevailing in the intake manifold of an internal combustion engine.
  • the intake pressure is important for engine performance policies. It can still be used for the diagnosis of a good operation of a turbo-compressor, if the internal combustion engine is equipped with it.
  • the intake pressure can of course be measured by a pressure sensor installed in the engine intake manifold. It is an expensive solution.
  • FR 2,885,216 it is known by FR 2,885,216 to estimate the intake pressure from the gas flow rate in the engine from which the mass of gas in the intake circuit is calculated, and then to calculate the pressure in the intake manifold using as additional parameter the temperature of the gases flowing in this manifold.
  • the invention thus aims to provide a method and a device for estimating the intake pressure of an internal combustion engine involving only a minimum of equipment and requiring a very simple calculation of the desired value.
  • a cylinder 1 of an internal combustion engine the latter may be gasoline or diesel type and include one or more cylinders.
  • a piston 2 delimiting the combustion chamber 3, a connecting rod 4, a crankshaft 5, a gas intake manifold 6 and a device 7 for exhausting gases.
  • At least one of the cylinders of the engine is also equipped with a sensor 8 continuously measuring the angular position of the crankshaft 5 and a sensor 9 making it possible to measure the In the place of these sensors, it is also possible to provide equivalent means capable of respectively supplying the one and the other parameters.
  • the value ⁇ recorded by the sensor 8 represents the instantaneous angle of the crankshaft 5 and that p ⁇ measured by the sensor 9, the instantaneous pressure in the combustion chamber 3. They are applied to a computing device 10 which can be set up. for example, in the program of the on-board computer of the motor vehicle or in the form of an autonomous computing device.
  • the computing device 10 comprises a functional block 11 which detects a predefined value ⁇ rfa of the angular position of the crankshaft.
  • the instant corresponding to this angular position is chosen close to the closing time rfa of the intake valve (referenced 6a in the figure) during each cycle of the engine.
  • crankshaft angle which is most frequently located in the middle of the point cloud has a value of 195 degrees crankshaft (21) after the top dead center of the cylinder considered (ie 15 ° crankshaft after the bottom dead center as specified upper). It is therefore possible to choose this crank angle value for measuring the pressure in the cylinder in the context of the process according to the invention.
  • the successive predefined values ⁇ rfa determined in the functional block 11 are correlated with the pressure values p ⁇ recorded at the corresponding instants by the sensor 9, which operation is performed by the functional block 12.
  • the pressure value called p cyl rfa is very close to that of the pressure prevailing in the intake manifold 6.
  • FIG. 3 is a plot of points giving the value of the collector pressure p col as a function of the value of the pressure in the cylinder P cyl eng for a crankshaft angle of 195 ° after the top dead center of the cylinder considered. It is observed that the relation between the pressure in the cylinder P cyl eng and the collector pressure p col is almost linear.
  • the method according to the invention finally consists, during the operation of each engine concerned in operating the calculation of the pressure in the intake manifold 6, during each combustion cycle, as a function of the pressure value recorded in the combustion chamber. 3. This calculation operation is illustrated in the figure by the function block 13.
  • the method according to the invention thus makes it possible to estimate the value p col of the pressure in the intake manifold 6 of an internal combustion engine by using only very few calculation means and by means of sensors which obviously are usually provided to manage the operation of the engine. It turned out that the thus estimated neck pressure p approaches very close to the values that would be measured in situ in the intake manifold with the aid of a sensor which would be placed specially for this purpose.
  • Figure 4 is a record of 2500 points 24 representing the relative error between the collector pressure p col estimated by the method according to the invention and a measured collector pressure P mes using a pressure sensor.
  • relative error here refers to the absolute value of the difference between a measured collector pressure P mes by a pressure sensor and the estimated collector pressure p col from the cylinder pressure by means of the process of the invention, all divided by the measured collector pressure value P mes .
  • FIG. 4 shows that, with the method according to the invention, the error made with respect to a collector pressure measured with a pressure sensor is very small.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
EP06301084A 2005-10-24 2006-10-24 Verfahren und System zum Schätzen des Druckes im Ansaugkrümmer einer Verbrennungskraftmaschine Not-in-force EP1777397B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0510824A FR2892453B1 (fr) 2005-10-24 2005-10-24 Procede et dispositif pour estimer la pression regnant dans le collecteur d'admission d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1777397A1 true EP1777397A1 (de) 2007-04-25
EP1777397B1 EP1777397B1 (de) 2008-12-03

Family

ID=36593721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06301084A Not-in-force EP1777397B1 (de) 2005-10-24 2006-10-24 Verfahren und System zum Schätzen des Druckes im Ansaugkrümmer einer Verbrennungskraftmaschine

Country Status (4)

Country Link
EP (1) EP1777397B1 (de)
AT (1) ATE416304T1 (de)
DE (1) DE602006003982D1 (de)
FR (1) FR2892453B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2469826A (en) * 2009-04-29 2010-11-03 Gm Global Tech Operations Inc Method for estimating intake manifold pressure in an internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443517A1 (de) * 1993-12-14 1995-06-22 Bosch Gmbh Robert Einrichtung zur Lasterfassung bei einer Brennkraftmaschine
EP1162357A2 (de) * 2000-06-10 2001-12-12 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zum Überwachen des Betriebs eines Verbrennungsmotors
WO2004048761A1 (en) * 2002-11-27 2004-06-10 Ricardo Uk Limited Improved engine management
EP1443199A1 (de) * 2001-10-15 2004-08-04 Toyota Jidosha Kabushiki Kaisha Saugluftvolumenschätzvorrichtung für verbrennungsmotor
EP1566533A1 (de) * 2004-02-18 2005-08-24 Nissan Motor Company, Limited Vorrichtung zur Bestimmung der Quantität der Einlassluft in einem Zylinder

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871521B1 (fr) * 2004-06-11 2008-08-01 Peugeot Citroen Automobiles Sa Systeme d'estimation de la pression dans le collecteur d'echappement d'un moteur diesel et procede de calibrage de ce systeme

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443517A1 (de) * 1993-12-14 1995-06-22 Bosch Gmbh Robert Einrichtung zur Lasterfassung bei einer Brennkraftmaschine
EP1162357A2 (de) * 2000-06-10 2001-12-12 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zum Überwachen des Betriebs eines Verbrennungsmotors
EP1443199A1 (de) * 2001-10-15 2004-08-04 Toyota Jidosha Kabushiki Kaisha Saugluftvolumenschätzvorrichtung für verbrennungsmotor
WO2004048761A1 (en) * 2002-11-27 2004-06-10 Ricardo Uk Limited Improved engine management
EP1566533A1 (de) * 2004-02-18 2005-08-24 Nissan Motor Company, Limited Vorrichtung zur Bestimmung der Quantität der Einlassluft in einem Zylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2469826A (en) * 2009-04-29 2010-11-03 Gm Global Tech Operations Inc Method for estimating intake manifold pressure in an internal combustion engine
WO2010124758A1 (en) 2009-04-29 2010-11-04 Gm Global Technology Operations, Inc. Method for estimating the pressure prevailing in an intake manifold of an internal combustion engine and method of controlling an internal combustion engine
DE112010002283T5 (de) 2009-04-29 2012-10-11 Gm Global Technology Operations, Inc. Verfahren zum Abschätzen des Drucks, der in einem Ansaugkrümmer eines Verbrennungsmotorsherrscht, und Verfahren zum Steuern eines Verbrennungsmotors
GB2469826B (en) * 2009-04-29 2012-11-21 Gm Global Tech Operations Inc Method for estimating the pressure prevailing in an intake manifold of an internal combustion engine and method of controlling an internal combustion engine

Also Published As

Publication number Publication date
EP1777397B1 (de) 2008-12-03
FR2892453B1 (fr) 2010-12-17
ATE416304T1 (de) 2008-12-15
FR2892453A1 (fr) 2007-04-27
DE602006003982D1 (de) 2009-01-15

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