CN104105859B - For to allowing the method and system diagnosed into air in motor vehicles explosive motor - Google Patents

For to allowing the method and system diagnosed into air in motor vehicles explosive motor Download PDF

Info

Publication number
CN104105859B
CN104105859B CN201380008072.4A CN201380008072A CN104105859B CN 104105859 B CN104105859 B CN 104105859B CN 201380008072 A CN201380008072 A CN 201380008072A CN 104105859 B CN104105859 B CN 104105859B
Authority
CN
China
Prior art keywords
pressure
rich
exhaust
explosive motor
poor degree
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 - Fee Related
Application number
CN201380008072.4A
Other languages
Chinese (zh)
Other versions
CN104105859A (en
Inventor
R·布鲁内尔
L·丰维埃尔
L·马丁
O·格龙丹
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
Publication of CN104105859A publication Critical patent/CN104105859A/en
Application granted granted Critical
Publication of CN104105859B publication Critical patent/CN104105859B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02D41/0002—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
    • F02D41/0025—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
    • F02D41/1493—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
    • F02D41/02—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

Landscapes

  • 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

It there is disclosed herein for allowing the method diagnosed into air in motor vehicles explosive motor, which to be equipped with a turbo-compressor and a low-pressure section exhaust gas recycling loop (3) and/or a high-pressure section exhaust gas recycling loop (4).This method comprises the following steps：Determine the multiple parameters of the operation characteristic of the expression engine, rich or poor degree in estimation exhaust, the rich or poor degree in the exhaust is measured using the rich or poor degree probe (31) of one in an exhaust pipe (7) for being placed on the explosive motor, one diagnostic criteria is determined by the ratio between the rich or poor degree of the measurement for calculating the exhaust and the rich or poor degree of the estimation of the exhaust, compared with least one diagnostic threshold that the diagnostic criteria is spread with combining system, and send a diagnostic signal depending on the comparative result.

Description

For to allowing being diagnosed into air in the motor vehicles explosive motor Method and system
Technical field
The technical field of the present invention is to allowing the entrance to the gas of engine to be monitored, and is more particularly diagnosis Revealed into air.
Background technology
The amount for the nitrogen oxides that diesel engine produces is to be highly dependent on the air for allowing access into engine cylinder, fuel And the amount comprising inert gas in the reactive mixture.The amount of inert gas can be by controlling a portion discharge again The aperture of the EGR valve included in circulation (EGR) valve circuit changes.The portion discharge recirculation circuit passes through a hole portion To connect the exhausting loop and be adjusted into air circuit, the size of the hole portion by EGR valve.
When engine is equipped with a turbo-compressor, there are the two kinds of different EGR circuit limited configurations.
First configuration of referred to as high-pressure EGR loop be related to cause compressor downstream into air circuit and the row of turbine upstream Air circuit unicom.This configuration is referred to as high pressure, because it is positioned at due to supercharging and in the high region of pressure.
Second configuration of referred to as low-pressure EGR loop is related to the row into air circuit and turbine downstream for causing upstream of compressor Air circuit unicom.This configuration is referred to as low pressure, because it is located at pressure less than in a region of the boost pressure.
One engine can be equipped with one of both configurations or another one, or be equipped with two kinds at the same time and match somebody with somebody Put.
In order to monitor allow access into engine gas and fuel mixture stoichiometry, obtain on allowing access into The available authentic communication of amount of air be necessary.Because the amount of the air allowed access into typically uses a stream Gauge comes definite, and the reliability for diagnosing the flowmeter is also advantageous.
For this purpose, using the credibility of diagnostic traffic meter at present, this, which is related to determine to whether there is in air inlet side, lets out Dew.The principle depends on the estimate of the air by entering engine and from the flowmeterMeasured value between A standard defined in ratio.The standard is determined using below equation：
This standard makes it possible to the value used according to the standard and one combines the discrete diagnostic threshold of system and comes Limit three kinds of situations.Therefore, it is possible to determine that the flowmeter deposit in nominal meaning by operation, the air inlet side in compressor downstream There is leakage or flowmeter failure in leakage or flowmeter failure or in the air inlet side of the upstream of compressor.
However, the criterion epsilonrThe flow rate of the exhaust by the low-pressure EGR loop and high-pressure EGR loop recycling is not considered. Now, because EGR is being extended to respond the law in future, the area coverage of this diagnostic program is largely reduced.Such as Fruit EGR is in use all the time, and detection leakage can become more and more difficult (not impossible).
The content of the invention
It is an object of the invention to reliably detect the leakage of air inlet side.
Another object of the present invention is that the leakage of air inlet side is detected when portion discharge recycling is currently running.
A kind of method being used for being diagnosed to the entrance of the air in motor vehicles explosive motor is proposed, this is interior Burn engine is equipped with least one in a turbo-compressor and the following：One low-pressure section exhaust gas recycling loop With a high-pressure section exhaust gas recycling loop.This method comprises the following steps：
Determine one group of parameter of the operation characteristic of the expression explosive motor,
Estimate the rich or poor degree of exhaust,
The poor of the exhaust is measured using the rich or poor degree probe of one in an exhaust pipe for being positioned at the explosive motor Fu Du,
By the ratio between the estimated value of the measured value of the rich or poor degree that calculates the exhaust and the rich or poor degree of the exhaust come really A fixed diagnostic criteria,
Compared with by the diagnostic criteria at least one diagnostic threshold discrete with combining system, and
Send a diagnostic signal depending on the comparative result.
Estimated value, the high pressure of air inlet flow rate can be included by wherein representing this group of parameter of the operation characteristic of the explosive motor The estimated value of EGR flow rate, the high pressure EGR valve upstream pressure and downstream pressure ratio estimated value and the air inlet discrimination The estimated value of pressure in pipe and the estimated value of low pressure EGR flow rate.
The ratio of the pressure of the upstream of the high pressure EGR valve and the pressure in downstream can be based on the pressure difference across the valve come Estimation.
The volume of the high-pressure section exhaust gas recycling loop can be represented by calculating and represents low-pressure section exhaust again One mass balance of the volume of circulation loop estimates the rich or poor degree of the exhaust.
The volume of the inlet manifold can be included by representing the volume of the high-pressure section exhaust gas recycling loop.
Volume, the low pressure of multiple admission lines can be included by representing the volume of the low-pressure section exhaust gas recycling loop The volume of the outlet of EGR circuit and the volume of the compressor.
A kind of system being used for being diagnosed to the entrance of the air in motor vehicles explosive motor is also proposed, should Explosive motor is equipped with least one in a turbo-compressor and the following：One low-pressure section exhaust gas recirculatioon is returned Road and a high-pressure section exhaust gas recycling loop.The system includes being used to estimate a device of the rich or poor degree of exhaust, is used for A device, a comparator and at least one processor for diagnostic criteria is determined, for determining the device of diagnostic criteria Can be based on the device received signal from the rich or poor degree for estimating exhaust and based on from being placed on the internal-combustion engine Rich or poor degree probe received signal in one exhaust pipe of machine determines a diagnostic criteria, the comparator can will from for Determine the device received signal of diagnostic criteria and from including at least one diagnostic threshold with reference to explosive motor distribution At least one processor received signal is compared, which sends depending on one of the comparative result exports signal.
This method and system provide the advantage that, the estimator for diagnosing leakage is supplied using rich or poor degree probe is vented And the credibility that flowmeter measures when EGR is run.
Brief description of the drawings
Shown from explanation that is being provided below only by the mode of non limiting example and being made by reference to attached drawing Other purposes, feature and advantage are showed, in the accompanying drawings：
- Fig. 1 illustrates an explosive motor for being equipped with low pressure EGR and high pressure EGR, and
- Fig. 2 illustrates the diagnostic method, and
- Fig. 3 illustrates the diagnostic system.
Embodiment
Fig. 1 shows an explosive motor 1, which is connected in a turbo-compressor 2 and fills Equipped with a low-pressure EGR loop 3 and a high-pressure EGR loop 4.Turbo-compressor 2 includes one to be connected with a turbine 2b A compressor 2a.Turbine 2b can be a variable geometry turbine.
One air inlet pipe 5 for being used to allow fresh air to enter is connected to the entrance of compressor 2a.Compressor 2a's Outlet is connected on the inlet manifold 1a of the explosive motor via a heat exchanger 6.The exhaust manifold of the explosive motor 1b is connected on the entrance of turbine 2b.The outlet of turbine 2b is connected on exhaust pipe 7, which is equipped with one Oxidation catalytic converter device 8 and a particulate filter 9.
Low-pressure EGR loop 3 includes an exhaust flap 10 and a low pressure EGR tube 11, and the exhaust flap is in oxidation catalysis The downstream of reformer apparatus 8 and particulate filter 9 is positioned in exhaust pipe 7, and the low pressure EGR tube is first in exhaust flap 10 Upstream and secondly go out in the tapped off upstream of compressor 2a.Low pressure EGR tube 11, which is equipped with, is positioned at the one of the exhaust flap upstream A low pressure heat exchanger 12 and a low pressure EGR valve 13 for being positioned at 12 downstream of low pressure heat exchanger, these gases from this Exchanger flows to the low pressure EGR valve.These flow rates being vented are controlled by low pressure EGR valve 13 in the low-pressure EGR loop. However, in the case of the low pressure ratio across this valve, when the low pressure EGR valve is opened very big and is not reaching to desired It can also use exhaust flap 10 during flow rate, which makes it possible to increase across the pressure ratio of the low pressure EGR valve.Wear These exhausts for crossing low-pressure EGR loop 3 are cooled before the upstream of compressor 2a is imported again.
High-pressure EGR loop 4 includes a high pressure EGR tube 14, and the pipe is first in the outlet of compressor 2a and inlet manifold 1a Between and secondly be tapped out between the entrance of the exhaust manifold and turbine 2b.High pressure EGR tube 14 is equipped with a height Press EGR valve 15.These flow rates being vented are controlled by high pressure EGR valve 15 in the high-pressure EGR loop.Returned through high pressure EGR The exhaust on road 4 is not cooled.The flow rate of these exhausts is the pressure sensing across the pressure difference of high pressure EGR valve 15 by a sensing Device and according to Bali St.Venant (Barr é Saint Venant) equation come definite.
The response time of low-pressure EGR loop 3 is shorter than the response time of high-pressure EGR loop 4, because the high-pressure EGR loop Length is longer.
The multiple and different sensors do not depicted provide following measurement：
Pi：Gas pressure in inlet manifold
T11：The temperature in charger-air cooler (RAS) downstream
Tamb：Environment temperature
Patm：Atmospheric pressure
F2：The rich or poor degree of gas of exhaust
ΔPhp：Across the pressure difference of high pressure EGR valve
Air rate
In addition, make it is assumed hereinafter that.
It is in the case of low-level in the pressure and temperature in the upstream of compressor volume, it is assumed that positioned at low pressure The pressure and temperature of gas between EGR pipe and entrance of the engagement in compressor 2a of FAI Fresh Air Intake pipe is equal to atmospheric pressure Power PatmWith atmospheric temperature Tatm。
Temperature Ti in the inlet manifold is the temperature T according to the gas for leaving heat exchanger 611High pressure is left with basis The temperature T of EGR valve 16egr,hp, pass through application below equation to estimate：
Based on this explanation to the explosive motor, the measured value F from the rich or poor degree of exhaust is defined2With an estimation Value F2,estBetween a diagnostic criteria deriving of ratio.
This diagnostic criteria is a general standard, it means that the standard can be used to be recycled in these portion discharges In order operation both (high pressure EGR or the low pressure EGR) or mixed running (while high pressure EGR and low pressure EGR) in circuit.
The estimated value F of the rich or poor degree of the exhaust2,estIt can be obtained from below equation：
Wherein：
PCO：It is the rich or poor degree under stoichiometric condition
Fi,est：It is the estimated value of the gas composition of air inlet
It is fuel flow rate
It is air inlet flow rate
Rich or poor degree under stoichiometric condition is a constant for depending on fuel-in-use.
The fuel flow rate is assumed to be equal to the reference value in the case of a preferable injector.
The air inlet flow rate is estimated using the model then described.
The estimated value of the gas composition of air inlet can pass through the differential side of the change of the gas composition to determining air inlet Cheng Jinhang is integrated to obtain.This carries out mass balance equivalent to the equivalent volume to EGR circuit of concern.
If using high pressure EGR and low pressure EGR at the same time, need to consider the balance in the two circuits.
High pressure EGR balances are related to a volume for corresponding to the inlet manifold.In order to carry out mass balance, this appearance is reached Long-pending becoming a mandarin is set to the flow rate of the compressor and the flow rate of high pressure EGR and goes out the stream that stream is set to be sucked by the engine Rate.
Low pressure EGR balance is related to a volume, which corresponds to a volume for being arranged on the inlet manifold upstream.This A volume includes the volume of the volume of these admission lines, the volume of low-pressure EGR loop outlet and the compressor.This volume To become a mandarin be air rate and low pressure EGR flow rate, and it is the flow rate for leaving the compressor to go out stream.
By adding an additional volume, introduce corresponding to the gas composition F in this volume3An extra shape State variable.The change of the quality of burnt gas in low pressure volume is provided by relationship below：
If the gross mass in this volume is by using perfect gas law P3V3=m3RT3To substitute, then can write out Determine the differential equation of the change of the composition in the low pressure volume.
This equation is integrated to obtain the estimated value of the rich or poor degree of the exhaust.
The rich or poor degree of the exhaust is estimated by application equation 4 and equation 6 and combination below equation：
In addition, which is estimated using below equation：
Wherein ηvol(Ne,ρ1) it is reflecting for the volumetric efficiency that changes with the gas density in engine speed and inlet manifold Penetrate.
High pressure EGR flow rate is calculated by using Bali Saint-Venant equation：
Wherein
PavtIt is the pressure of the turbine upstream,
TavtIt is the temperature of the turbine upstream,
S(uegr,hp) be high pressure EGR valve the section changed with position,
πegr.hpIt is across the ratio of the pressure of high pressure EGR valve.
The ratio of the pressure of high pressure EGR valve upstream and the pressure in downstream can be from the measured value of pressure difference and the inlet manifold Pressure measuring value derive：
The pressure of the turbine upstream is not measured.The pressure is by the measured value of the admission pressure and the high pressure The differential pressure measured at EGR valve sums to obtain.
The calculating of low pressure EGR flow rate is as follows：
By using these equations as detailed above, diagnostic criteria ε can be rewritten as followsF2：
Hence it is clear that the diagnostic criteria depends on eight variables.The diagnostic criteria allows while the EGR is run Detect the leakage of air inlet.
Fig. 2 is illustrated enters the method for carrying out diagnosis to air, and this method comprises the following steps：
In first step 20, one group of parameter for being related to the rich or poor degree of estimation exhaust is determined.This first step can be by More sub-steps are resolved into, in these sub-steps, by the flow rate of the application estimation suction of equation 8, by being estimated using equation 9 High pressure EGR flow rate, based on the pressure measuring value in the differential pressure measurement across the high pressure EGR valve and the inlet manifold by answering The ratio of the pressure of the pressure of the upstream of the high pressure EGR valve and downstream is estimated with equation 10, and by estimating using equation 11 Calculate low pressure EGR flow rate.
In second step 21, the rich or poor degree of the exhaust is estimated by application equation 4, equation 6 and equation 7.
In third step 22, the rich or poor degree of the exhaust is measured using a rich or poor degree probe.
In four steps 23, which is determined by application equation 3.
In the 5th step 24, compared with least one diagnostic threshold which spreads with combining system.
In the 6th step 25, a diagnosis letter depending on practiced result of the comparison in the 5th step is sent Number.
Fig. 3 illustrate for air enter carry out diagnosis system 30, the system be connected in input one it is poor Fu Du probes 31, which is placed in the exhaust pipe 7 in the turbine downstream.
The air enters a device 33 of the rich or poor degree that diagnostic system 30 includes being vented for estimation, for determining diagnosis One device 32 of standard, a comparator 34 and at least one processor 35.
The device 32 for determining diagnostic criteria is connected to rich or poor degree probe 31 in input and estimation is vented rich or poor degree Device 33 on, and be connected at output an input of comparator 34.
The device 33 that estimation is vented rich or poor degree applies equation 4.Determine the device 32 of diagnostic criteria is made by application equation 3 The signal sent with the device 33 that rich or poor degree is vented by estimation, to determine the diagnostic criteria.
Comparator 34 can be to 32 received signal of device from definite diagnostic criteria with being dissipated from including combining propulsion unit 35 received signal of at least one processor of at least one diagnostic threshold of cloth is compared.Comparator 34 is sent at output One depends on the signal compared.
In short, even if this method and system for determining diagnostic criteria allow operationally to examine when portion discharge recycles Survey the leakage of air inlet side.

Claims (6)

1. a kind of method being used for being diagnosed to the entrance of the air in motor vehicles explosive motor, the explosive motor It is equipped with least one in a turbo-compressor and the following：One low-pressure section exhaust gas recycling loop (3) and one A high-pressure section exhaust gas recycling loop (4), it is characterised in that this method comprises the following steps：
Determine one group of parameter of the operation characteristic of the expression explosive motor,
Estimate the rich or poor degree of exhaust,
The exhaust is measured using the rich or poor degree probe (31) of one in an exhaust pipe (7) for being positioned at the explosive motor Rich or poor degree,
One is determined by the ratio between the estimated value of the measured value of the rich or poor degree for calculating the exhaust and the rich or poor degree of the exhaust A diagnostic criteria,
Compared with least one diagnostic threshold that the diagnostic criteria is spread with combining system, and
A diagnostic signal depending on the comparative result is sent,
Wherein representing this group of parameter of the operation characteristic of the explosive motor includes estimated value, the high pressure EGR flow rate of air inlet flow rate Estimated value, the high pressure EGR valve upstream pressure and downstream pressure ratio estimated value and the inlet manifold (1a) In the estimated value of pressure and the estimated value of low pressure EGR flow rate.
2. the method as described in claim 1, the wherein ratio of the pressure of the upstream of the high pressure EGR valve and the pressure in downstream are bases Estimated in pressure difference across the valve.
3. method as claimed in claim 1 or 2, wherein representing the volume of the high-pressure section exhaust gas recycling loop by calculating The rich or poor degree of the exhaust is estimated with a mass balance of the volume for representing the low-pressure section exhaust gas recycling loop.
4. method as claimed in claim 1 or 2, wherein include should be into for the volume for representing the high-pressure section exhaust gas recycling loop The volume of gas manifold (1a).
5. method as claimed in claim 1 or 2, wherein representing the volume of the low-pressure section exhaust gas recycling loop including multiple The volume of the volume of the outlet of the volume, the low-pressure EGR loop of admission line and the compressor (2a).
6. a kind of system being used for being diagnosed to the entrance of the air in motor vehicles explosive motor, the explosive motor It is equipped with least one in a turbo-compressor (2) and the following：One low-pressure section exhaust gas recycling loop (3) and One high-pressure section exhaust gas recycling loop (4), it is characterised in that the system is included being used for based on representing the explosive motor One device (32) of the rich or poor degree of one group of parameter estimation exhaust of operation characteristic, a device for determining diagnostic criteria (33), a comparator (34) and at least one processor (35), the device (33) for determining diagnostic criteria being capable of base In device (32) received signal from the rich or poor degree for estimating exhaust and based on from being placed on the explosive motor An exhaust pipe (7) in rich or poor degree probe (31) received signal determine a diagnostic criteria, comparator (34) energy Enough by from for determining device (33) received signal of diagnostic criteria and being spread at least from including combining explosive motor At least one processor (35) received signal of one diagnostic threshold is compared, which sends depending on the ratio One output signal of relatively result,
Wherein representing this group of parameter of the operation characteristic of the explosive motor includes estimated value, the high pressure EGR flow rate of air inlet flow rate Estimated value, the high pressure EGR valve upstream pressure and downstream pressure ratio estimated value and the inlet manifold (1a) In the estimated value of pressure and the estimated value of low pressure EGR flow rate.
CN201380008072.4A 2012-02-06 2013-01-28 For to allowing the method and system diagnosed into air in motor vehicles explosive motor Expired - Fee Related CN104105859B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
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
FR1251063 2012-02-06
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

Publications (2)

Publication Number Publication Date
CN104105859A CN104105859A (en) 2014-10-15
CN104105859B true CN104105859B (en) 2018-05-04

Family

ID=47633040

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201380008072.4A Expired - Fee Related CN104105859B (en) 2012-02-06 2013-01-28 For to allowing the method and system diagnosed into air in motor vehicles explosive motor

Country Status (7)

Country Link
EP (1) EP2812550A1 (en)
JP (1) JP2015524888A (en)
KR (1) KR20140125371A (en)
CN (1) CN104105859B (en)
FR (1) FR2986565B1 (en)
RU (1) RU2611056C2 (en)
WO (1) WO2013117447A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2986565B1 (en) * 2012-02-06 2014-01-24 Renault Sa METHOD AND SYSTEM FOR DIAGNOSING THE INTAKE OF AIR IN AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
US9932918B2 (en) * 2014-11-21 2018-04-03 Gm Global Technology Operations, Llc Method of feedforward turbocharger control for boosted engines with multi-route EGR
BR112017011776B1 (en) * 2014-12-04 2021-01-26 Fpt Industrial S.P.A leakage / failure detection system of a low pressure exhaust gas (egr) recirculation (rgr) circuit in an internal combustion engine, internal combustion engine and method for detecting a leak / failure of a detection system
DE102017107071A1 (en) * 2017-04-03 2017-07-06 FEV Europe GmbH Internal combustion engine with exhaust gas recirculation
DE102018203036A1 (en) * 2018-03-01 2019-09-19 Volkswagen Aktiengesellschaft "Diagnostic method for jump detection of a continuous measured variable, control for carrying out the method"
CN111868366B (en) * 2018-03-16 2022-07-22 沃尔沃卡车集团 Method for estimating cylinder pressure
JP2020037912A (en) * 2018-09-05 2020-03-12 株式会社豊田自動織機 Control system of engine

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02305348A (en) * 1989-05-18 1990-12-18 Japan Electron Control Syst Co Ltd Self-diagnostic apparatus for internal combustion engine
JPH02308950A (en) * 1989-05-25 1990-12-21 Japan Electron Control Syst Co Ltd Air leakage self-diagnostic device for control device of internal combustion engine and air leakage learning correcting device
DE10209870A1 (en) * 2002-03-06 2003-09-18 Volkswagen Ag Method for detecting a leak in the inlet duct of an internal combustion engine and for carrying out the method internal combustion engine
JP2004100494A (en) * 2002-09-05 2004-04-02 Denso Corp Intake system failure detector for internal combustion engine and internal combustion engine with this detector
JP2004100517A (en) * 2002-09-06 2004-04-02 Mitsubishi Fuso Truck & Bus Corp Failure detector of internal combustion engine
US6802302B1 (en) * 2003-04-08 2004-10-12 Cummins, Inc. System for diagnosing EGR flow rate operation
ITTO20031000A1 (en) * 2003-12-12 2005-06-13 Fiat Ricerche METHOD OF DIAGNOSIS OF THE FAILURES IN ORGANS OF AN AIR SUPPLY SYSTEM OF AN INTERNAL COMBUSTION ENGINE.
DE102004010519B4 (en) * 2004-03-04 2007-10-04 Mehnert, Jens, Dr. Ing. Method for controlling the air flow rate of internal combustion engines
JP2005315132A (en) * 2004-04-28 2005-11-10 Honda Motor Co Ltd Air intake system abnormality detector of internal combustion engine
DE102005019807B4 (en) * 2005-04-28 2014-01-23 Continental Automotive Gmbh Method and device for the localization of faulty components or leaks in the intake tract of an internal combustion engine
GB2434406A (en) * 2005-08-25 2007-07-25 Ford Global Tech Llc I.c. engine exhaust gas recirculation (EGR) system with dual high pressure and low pressure EGR loops
JP4215069B2 (en) * 2006-04-26 2009-01-28 トヨタ自動車株式会社 Exhaust gas recirculation device for internal combustion engine
JP4303757B2 (en) * 2007-01-18 2009-07-29 本田技研工業株式会社 Abnormality determination device for intake system of internal combustion engine
JP4483873B2 (en) * 2007-02-13 2010-06-16 トヨタ自動車株式会社 Control device for internal combustion engine
JP4265667B2 (en) * 2007-02-23 2009-05-20 トヨタ自動車株式会社 Exhaust system for internal combustion engine
JP4320684B2 (en) * 2007-06-08 2009-08-26 トヨタ自動車株式会社 Exhaust gas recirculation device for internal combustion engine
JP4697201B2 (en) * 2007-07-19 2011-06-08 トヨタ自動車株式会社 Abnormality detection device for internal combustion engine
JP2010038147A (en) * 2008-07-10 2010-02-18 Toyota Motor Corp Engine exhaust emission control system
FR2944058B1 (en) * 2009-04-02 2011-04-01 Renault Sas CONTROL SYSTEM AND METHOD FOR ESTIMATING RECOVERED EXHAUST GAS FLOW IN AN INTERNAL COMBUSTION ENGINE
JP4816773B2 (en) * 2009-07-16 2011-11-16 株式会社デンソー Exhaust component concentration sensor response detection device
FR2948978A3 (en) * 2009-08-07 2011-02-11 Renault Sa Air intake system operating method for diesel engine of motor vehicle, involves activating low pressure exhaust gas recirculation device in second operating mode, and high pressure exhaust gas recirculation device in third operating mode
FR2986565B1 (en) * 2012-02-06 2014-01-24 Renault Sa METHOD AND SYSTEM FOR DIAGNOSING THE INTAKE OF AIR IN AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE

Also Published As

Publication number Publication date
WO2013117447A1 (en) 2013-08-15
RU2014136398A (en) 2016-03-27
JP2015524888A (en) 2015-08-27
FR2986565B1 (en) 2014-01-24
CN104105859A (en) 2014-10-15
KR20140125371A (en) 2014-10-28
RU2611056C2 (en) 2017-02-21
EP2812550A1 (en) 2014-12-17
FR2986565A1 (en) 2013-08-09

Similar Documents

Publication Publication Date Title
CN104105859B (en) For to allowing the method and system diagnosed into air in motor vehicles explosive motor
RU2558005C2 (en) Method of adjustment of relative humidity in air path of internal combustion engine fitted with low pressure exhaust gas recirculation system
US9239025B2 (en) Condensation detection systems and methods
CN102828840B (en) The Efficiency testing method of low pressure EGR system and low pressure EGR cooler
JP6228763B2 (en) Abnormality determination system and abnormality determination method
US6601387B2 (en) System and method for determination of EGR flow rate
JP4415963B2 (en) Exhaust gas purification device for internal combustion engine
CN104302901B (en) Method for detecting abnormality
US20120191427A1 (en) System for diagnosing error conditions of a gas flow control system for turbocharged engines
CN102308079B (en) Exhaust gas recirculation system and method of operating such system
CN104040159B (en) Method for detecting abnormality
CN101523034B (en) Estimating engine system parameters based on engine cylinder pressure
US7802427B2 (en) System and method for monitoring boost leak
CN102486117A (en) Turbocharger protecting method of engine provided with lp-egr
JP2009008463A (en) Apparatus and method for measuring quantity of recirculating gas flow of exhaust gas
JP2015031167A (en) Diagnostic device
JP5120333B2 (en) Air flow meter failure diagnosis device
GB2475316A (en) Controlling the level of oxygen concentration in the intake manifold of an i.c. engine having a low pressure EGR route
EP2562406B1 (en) Abnormality detection device and abnormality detection method for egr system
CN107110046B (en) Method for diagnosing a partial exhaust gas recirculation system of a motor vehicle
US7841171B2 (en) Exhaust emission control device for internal combustion engine
US20240077043A1 (en) Leak Diagnosis for an Intake System
CN112601884A (en) Method for controlling operation of exhaust gas recirculation device and exhaust gas recirculation device
CN115199428B (en) Diagnostic method, diagnostic circuit and motor vehicle for an intake section of an internal combustion engine
KR102323409B1 (en) Method and system for diagnosing boost pressure sensor

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180504

Termination date: 20220128

CF01 Termination of patent right due to non-payment of annual fee