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RU2014136398A - METHOD AND SYSTEM OF DIAGNOSIS OF AIR SUPPLY TO THE INNER COMBUSTION ENGINE OF A VEHICLE - Google Patents

METHOD AND SYSTEM OF DIAGNOSIS OF AIR SUPPLY TO THE INNER COMBUSTION ENGINE OF A VEHICLE Download PDF

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Publication number
RU2014136398A
RU2014136398A RU2014136398A RU2014136398A RU2014136398A RU 2014136398 A RU2014136398 A RU 2014136398A RU 2014136398 A RU2014136398 A RU 2014136398A RU 2014136398 A RU2014136398 A RU 2014136398A RU 2014136398 A RU2014136398 A RU 2014136398A
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exhaust
combustion engine
enrichment
internal combustion
degree
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RU2014136398A
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Russian (ru)
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RU2611056C2 (en
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Реми БРЮНЕЛЬ
Лоран ФОНВЬЕЙ
Людовик МАРТЕН
Оливье ГРОНДЕН
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Рено С.А.С.
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    • 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
    • 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
    • F02D41/1493—Details
    • F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
    • 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
    • F02D41/1438—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
    • F02D41/1454—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 oxygen content or concentration or the air-fuel ratio
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Supercharger (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

1. Способ диагностики подачи воздуха в двигатель внутреннего сгорания автотранспортного средства, при этом двигатель внутреннего сгорания оборудован турбокомпрессором и, по меньшей мере, одним из: контура (3) частичной рециркуляции выхлопных газов низкого давления и контура (4) частичной рециркуляции выхлопных газов высокого давления, отличающийся тем, что содержит следующие этапы:определяют совокупность величин, характеризующих работу двигателя внутреннего сгорания,производят оценку степени обогащения в выхлопе,измеряют степень обогащения в выхлопе при помощи датчика (31) обогащения, расположенного в выхлопной трубе (7) двигателя внутреннего сгорания,определяют критерий диагностики путем вычисления соотношения между измерением степени обогащения в выхлопе и оценкой степени обогащения в выхлопе,сравнивают критерий диагностики, по меньшей мере, с одним порогом диагностики, охватывающим разбросы системы, ипередают сигнал диагностики, зависящий от результата сравнения.2. Способ по п. 1, в котором совокупность величин, характеризующих работу двигателя внутреннего сгорания, включает в себя оценки расхода всасываемого потока, расхода EGR высокого давления, перепада давлений на входе и на выходе клапана EGR высокого давления и давления во впускном коллекторе (2а) и расхода EGR низкого давления.3. Способ по п. 1, в котором оценку перепада давлений на входе и на выходе клапана EGR высокого давления производят в зависимости от измерений дифференциального давления с двух сторон от указанного клапана.4. Способ по п. 1, в котором оценку степени обогащения в выхлопе производят путем определения материального баланса объемов, характеризующих контур части1. A method for diagnosing air supply to an internal combustion engine of a motor vehicle, wherein the internal combustion engine is equipped with a turbocharger and at least one of: a low pressure partial exhaust gas recirculation circuit (3) and a high pressure partial exhaust gas recirculation circuit (4) , characterized in that it contains the following steps: determine the set of values characterizing the operation of the internal combustion engine, evaluate the degree of enrichment in the exhaust, measure the degree of heating The exhaust emissions using the enrichment sensor (31) located in the exhaust pipe (7) of the internal combustion engine determine the diagnostic criterion by calculating the relationship between measuring the degree of enrichment in the exhaust and evaluating the degree of enrichment in the exhaust, compare the diagnostic criterion with one diagnostic threshold, covering the scatter of the system, transmit a diagnostic signal, depending on the comparison result. 2. The method according to claim 1, wherein the set of values characterizing the operation of the internal combustion engine includes estimating the intake flow rate, high pressure EGR flow, differential pressure at the inlet and outlet of the high pressure EGR valve and pressure in the intake manifold (2a) and low pressure EGR flow. 3. The method according to claim 1, in which the differential pressure at the inlet and outlet of the high pressure EGR valve is estimated depending on the differential pressure measurements from both sides of the valve. The method according to claim 1, in which an assessment of the degree of enrichment in the exhaust is carried out by determining the material balance of volumes characterizing the contour of the part

Claims (7)

1. Способ диагностики подачи воздуха в двигатель внутреннего сгорания автотранспортного средства, при этом двигатель внутреннего сгорания оборудован турбокомпрессором и, по меньшей мере, одним из: контура (3) частичной рециркуляции выхлопных газов низкого давления и контура (4) частичной рециркуляции выхлопных газов высокого давления, отличающийся тем, что содержит следующие этапы:1. A method for diagnosing air supply to an internal combustion engine of a motor vehicle, wherein the internal combustion engine is equipped with a turbocharger and at least one of: a low pressure partial exhaust gas recirculation circuit (3) and a high pressure partial exhaust gas recirculation circuit (4) characterized in that it comprises the following steps: определяют совокупность величин, характеризующих работу двигателя внутреннего сгорания,determine the set of values characterizing the operation of the internal combustion engine, производят оценку степени обогащения в выхлопе,assess the degree of enrichment in the exhaust, измеряют степень обогащения в выхлопе при помощи датчика (31) обогащения, расположенного в выхлопной трубе (7) двигателя внутреннего сгорания,measure the degree of enrichment in the exhaust using an enrichment sensor (31) located in the exhaust pipe (7) of the internal combustion engine, определяют критерий диагностики путем вычисления соотношения между измерением степени обогащения в выхлопе и оценкой степени обогащения в выхлопе,determining a diagnostic criterion by calculating the relationship between measuring the degree of enrichment in the exhaust and assessing the degree of enrichment in the exhaust, сравнивают критерий диагностики, по меньшей мере, с одним порогом диагностики, охватывающим разбросы системы, иcomparing a diagnostic criterion with at least one diagnostic threshold spanning system scatter, and передают сигнал диагностики, зависящий от результата сравнения.transmit a diagnostic signal, depending on the result of the comparison. 2. Способ по п. 1, в котором совокупность величин, характеризующих работу двигателя внутреннего сгорания, включает в себя оценки расхода всасываемого потока, расхода EGR высокого давления, перепада давлений на входе и на выходе клапана EGR высокого давления и давления во впускном коллекторе (2а) и расхода EGR низкого давления.2. The method according to p. 1, in which the set of values characterizing the operation of the internal combustion engine includes estimating the intake flow rate, high pressure EGR flow, differential pressure at the inlet and outlet of the high pressure EGR valve and pressure in the intake manifold (2a ) and low pressure EGR flow. 3. Способ по п. 1, в котором оценку перепада давлений на входе и на выходе клапана EGR высокого давления производят в зависимости от измерений дифференциального давления с двух сторон от указанного клапана.3. The method according to p. 1, in which the differential pressure at the inlet and outlet of the high pressure EGR valve is estimated depending on the differential pressure measurements on both sides of the valve. 4. Способ по п. 1, в котором оценку степени обогащения в выхлопе производят путем определения материального баланса объемов, характеризующих контур частичной рециркуляции выхлопных газов высокого давления и контур частичной рециркуляции выхлопных газов низкого давления.4. The method according to p. 1, in which an assessment of the degree of enrichment in the exhaust is carried out by determining the material balance of volumes characterizing the circuit for partial recirculation of high-pressure exhaust gases and the circuit for partial recirculation of low-pressure exhaust gases. 5. Способ по п. 1, в котором объем, характеризующий контур частичной рециркуляции выхлопных газов высокого давления, включает в себя объем впускного коллектора (2а).5. The method according to claim 1, in which the volume characterizing the circuit for partial recirculation of high-pressure exhaust gases includes the volume of the intake manifold (2a). 6. Способ по п. 1, в котором объем, характеризующий контур частичной рециркуляции выхлопных газов низкого давления, включает в себя совокупный объем впускных трубопроводов, выхода контура EGR низкого давления и компрессора.6. The method according to p. 1, in which the volume characterizing the circuit for partial recirculation of low-pressure exhaust gases includes the total volume of the intake pipes, the output of the low-pressure EGR circuit and the compressor. 7. Система диагностики подачи воздуха в двигатель внутреннего сгорания автотранспортного средства, при этом двигатель внутреннего сгорания оборудован турбокомпрессором (2) и, по меньшей мере, одним из: контура (3) частичной рециркуляции выхлопных газов низкого давления и контура (4) частичной рециркуляции выхлопных газов высокого давления, отличающаяся тем, что содержит средство (32) оценки степени обогащения в выхлопе, средство (33) определения критерия диагностики, компаратор (34) и, по меньшей мере, одно запоминающее устройство (35), при этом средство (33) определения критерия диагностики выполнено с возможностью определения критерия диагностики в зависимости от сигнала, полученного от средства (32) оценки степени обогащения в выхлопе и в зависимости от сигнала, полученного от датчика (31) обогащения, расположенного в выхлопной трубе (7) двигателя внутреннего сгорания, при этом компаратор (34) выполнен с возможностью сравнения сигнала, полученного от средства (33) определения критерия диагностики, с сигналом, полученным, по меньшей мере, от одного запоминающего устройства (35), содержащего, по меньшей мере, один порог диагностики, охватывающий разбросы двигателя внутреннего сгорания, при этом компаратор (34) выдает на выходе сигнал, зависящий от результата сравнения. 7. A diagnostic system for supplying air to the internal combustion engine of a motor vehicle, the internal combustion engine is equipped with a turbocharger (2) and at least one of: a low pressure partial exhaust gas recirculation circuit (3) and an exhaust partial gas recirculation circuit (4) high-pressure gases, characterized in that it contains means (32) for assessing the degree of enrichment in the exhaust, means (33) for determining the diagnostic criterion, a comparator (34) and at least one storage device (35), wherein The tool (33) for determining the diagnostic criterion is configured to determine the diagnostic criterion depending on the signal received from the means (32) for evaluating the degree of enrichment in the exhaust and depending on the signal received from the enrichment sensor (31) located in the exhaust pipe (7) an internal combustion engine, wherein the comparator (34) is configured to compare a signal received from the means (33) for determining a diagnostic criterion with a signal received from at least one storage device (35), comprising at least one diagnostic threshold covering the scatter of the internal combustion engine, while the comparator (34) generates an output signal depending on the comparison result.
RU2014136398A 2012-02-06 2013-01-28 Method and system for performing diagnostics on intake air admitted to motor vehicle internal combustion engine RU2611056C2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1251063 2012-02-06
FR1251063A FR2986565B1 (en) 2012-02-06 2012-02-06 METHOD AND SYSTEM FOR DIAGNOSING THE INTAKE OF AIR IN AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
PCT/EP2013/051533 WO2013117447A1 (en) 2012-02-06 2013-01-28 Method and system for performing diagnostics on the intake air admitted to a motor vehicle internal combustion engine

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RU2014136398A true RU2014136398A (en) 2016-03-27
RU2611056C2 RU2611056C2 (en) 2017-02-21

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EP (1) EP2812550A1 (en)
JP (1) JP2015524888A (en)
KR (1) KR20140125371A (en)
CN (1) CN104105859B (en)
FR (1) FR2986565B1 (en)
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CN104105859A (en) 2014-10-15
FR2986565A1 (en) 2013-08-09
JP2015524888A (en) 2015-08-27
EP2812550A1 (en) 2014-12-17
KR20140125371A (en) 2014-10-28
WO2013117447A1 (en) 2013-08-15
FR2986565B1 (en) 2014-01-24
RU2611056C2 (en) 2017-02-21
CN104105859B (en) 2018-05-04

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