ES2177099T3 - PROCEDURE FOR CONTROLLING THE INJECTION OF AN INTERNAL COMBUSTION ENGINE. - Google Patents

PROCEDURE FOR CONTROLLING THE INJECTION OF AN INTERNAL COMBUSTION ENGINE.

Info

Publication number
ES2177099T3
ES2177099T3 ES98958328T ES98958328T ES2177099T3 ES 2177099 T3 ES2177099 T3 ES 2177099T3 ES 98958328 T ES98958328 T ES 98958328T ES 98958328 T ES98958328 T ES 98958328T ES 2177099 T3 ES2177099 T3 ES 2177099T3
Authority
ES
Spain
Prior art keywords
probe
rich
poor
measurement signal
determined
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.)
Expired - Lifetime
Application number
ES98958328T
Other languages
Spanish (es)
Inventor
Vasco Afonso
Edouard Simon
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Application granted granted Critical
Publication of ES2177099T3 publication Critical patent/ES2177099T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F02D41/02—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
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • 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
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/148—Using a plurality of comparators

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)

Abstract

Procedimiento de control de la inyección de un motor de combustión interna unido, al menos, a un silenciador catalítico, en el cual se coloca una primera sonda no lineal (SD1) aguas arriba del silenciador catalítico (CAT), apta para facilitar una señal de medición (V1) representativa de la proporción de uno de los componentes de los gases de escape del motor a la entrada del silenciador catalítico, y una segunda sonda no lineal (SD2) aguas abajo del silenciador catalítico, apta para facilitar una segunda señal de medición (V2) representativa de la proporción de uno de los componentes de los gases de escape del motor a la salida del silenciador catalítico, y se determina un valor correctivo (KCL) a partir de las dos señales de medición a fin de corregir la cantidad de carburante inyectado, caracterizado por el hecho de que se compara la primera señal de medición (V1) con una primera señal de referencia predeterminada (Vb) correspondiente a una riqueza de la mezcla presente en la cámara de combustión sensiblemente igual a 1, de modo que se definen para esta primera sonda estados "rico" o "pobre", y se compara la segunda señal de medición (V2) con un umbral alto predeterminado (VS2) y con un umbral bajo predeterminado (VS1) que definen para la citada mezcla una zona de riquezas próximas a 1, de modo que se definen para esta segunda sonda estados estequiométrico, rico o pobre, por el hecho de que, cuando la segunda sonda está en su estado estequiométrico, se determina el citado valor correctivo utilizando las dos señales de medición, por el hecho de que cuando las dos sondas están las dos en estado rico, o en estado pobre, se determina el citado valor correctivo utilizando únicamente la primera señal de medición (V1), y por el hecho de que cuando las dos sondas están, respectivamente, en los estados rico y pobre o inversamente, se determina el citado valor correctivo utilizando únicamente la segunda señal de medición (V2).Procedure for controlling the injection of an internal combustion engine attached, at least, to a catalytic silencer, in which a first non-linear probe (SD1) is placed upstream of the catalytic silencer (CAT), capable of providing a signal of measurement (V1) representative of the proportion of one of the components of the engine exhaust at the inlet of the catalytic silencer, and a second nonlinear probe (SD2) downstream of the catalytic silencer, suitable for facilitating a second measurement signal (V2) representative of the proportion of one of the components of the engine exhaust at the output of the catalytic silencer, and a corrective value (KCL) is determined from the two measurement signals in order to correct the amount of injected fuel, characterized in that the first measurement signal (V1) is compared with a first predetermined reference signal (Vb) corresponding to a richness of the pres mixture entity in the combustion chamber substantially equal to 1, so that "rich" or "poor" states are defined for this first probe, and the second measurement signal (V2) is compared with a predetermined high threshold (VS2) and with a predetermined low threshold (VS1) defining for the said mixture an area of wealth close to 1, so that stoichiometric states, rich or poor, are defined for this second probe, due to the fact that, when the second probe is in its stoichiometric state, the said corrective value is determined using the two measurement signals, due to the fact that when the two probes are both in a rich state, or in a poor state, the said corrective value is determined using only the first measurement signal (V1), and due to the fact that when the two probes are respectively in the rich and poor states or vice versa, the said corrective value is determined using only the second measurement signal (V2).

ES98958328T 1997-12-05 1998-12-04 PROCEDURE FOR CONTROLLING THE INJECTION OF AN INTERNAL COMBUSTION ENGINE. Expired - Lifetime ES2177099T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9715407A FR2772078B1 (en) 1997-12-05 1997-12-05 METHOD FOR CONTROLLING THE INJECTION OF AN INTERNAL COMBUSTION ENGINE

Publications (1)

Publication Number Publication Date
ES2177099T3 true ES2177099T3 (en) 2002-12-01

Family

ID=9514233

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98958328T Expired - Lifetime ES2177099T3 (en) 1997-12-05 1998-12-04 PROCEDURE FOR CONTROLLING THE INJECTION OF AN INTERNAL COMBUSTION ENGINE.

Country Status (6)

Country Link
EP (1) EP1036269B1 (en)
JP (1) JP4054529B2 (en)
DE (1) DE69806964T2 (en)
ES (1) ES2177099T3 (en)
FR (1) FR2772078B1 (en)
WO (1) WO1999030022A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10025034A1 (en) * 2000-05-20 2001-11-22 Dmc2 Degussa Metals Catalysts Operation of petrol engine with new three-way catalyst having leading and trailing lambda sensors, avoids monitoring with second sensor until its rich-running output voltage reduces
US8347866B2 (en) * 2009-09-29 2013-01-08 GM Global Technology Operations LLC Fuel control system and method for more accurate response to feedback from an exhaust system with an air/fuel equivalence ratio offset

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5535181A (en) * 1978-09-05 1980-03-12 Nippon Denso Co Ltd Air fuel ratio control device
JPH0417747A (en) * 1990-05-07 1992-01-22 Japan Electron Control Syst Co Ltd Air-fuel ratio control system of internal combustion engine
JPH06213042A (en) * 1992-12-21 1994-08-02 Ford Motor Co Exhaust gas sensor system for internal combustion engine and oxygen-level signal supply process
US5392598A (en) * 1993-10-07 1995-02-28 General Motors Corporation Internal combustion engine air/fuel ratio regulation
JPH0821283A (en) * 1994-07-08 1996-01-23 Unisia Jecs Corp Air-fuel ratio control device for internal combustion engine

Also Published As

Publication number Publication date
EP1036269B1 (en) 2002-07-31
DE69806964D1 (en) 2002-09-05
JP2001526353A (en) 2001-12-18
JP4054529B2 (en) 2008-02-27
FR2772078A1 (en) 1999-06-11
FR2772078B1 (en) 2000-02-18
WO1999030022A1 (en) 1999-06-17
DE69806964T2 (en) 2002-12-05
EP1036269A1 (en) 2000-09-20

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