WO2013073457A1 - Système de diagnostic de refroidisseur intermédiaire - Google Patents

Système de diagnostic de refroidisseur intermédiaire Download PDF

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Publication number
WO2013073457A1
WO2013073457A1 PCT/JP2012/079072 JP2012079072W WO2013073457A1 WO 2013073457 A1 WO2013073457 A1 WO 2013073457A1 JP 2012079072 W JP2012079072 W JP 2012079072W WO 2013073457 A1 WO2013073457 A1 WO 2013073457A1
Authority
WO
WIPO (PCT)
Prior art keywords
intercooler
intake
cooling efficiency
temperature sensor
pressure sensor
Prior art date
Application number
PCT/JP2012/079072
Other languages
English (en)
Japanese (ja)
Inventor
英和 藤江
哲史 塙
Original Assignee
いすゞ自動車株式会社
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 いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Publication of WO2013073457A1 publication Critical patent/WO2013073457A1/fr

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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
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/33—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage controlling the temperature of the recirculated gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • F02D2021/083—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine controlling exhaust gas recirculation electronically
    • 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
    • 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
    • F02D2200/0414—Air temperature
    • 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
    • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/703—Atmospheric pressure
    • 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

Definitions

  • the present invention relates to an intercooler diagnostic system, and more particularly to an intercooler diagnostic system that can diagnose the cooling efficiency of the intercooler at low cost.
  • the intercooler is required not only to increase the output of the diesel engine described above, but also to have high cooling efficiency not only from legal requirements that stipulate that energy saving should be promoted by using an appropriate heat exchanger. It has been. Therefore, it is important to diagnose the cooling efficiency of the intercooler.
  • diagnosis of the cooling efficiency of the intercooler has been carried out by installing temperature sensors at the entrance and exit of the intercooler and comparing the difference between the measured values with the temperature rise in the turbocharger.
  • temperature sensors since it is necessary to newly add a plurality of temperature sensors, there is a problem in that the manufacturing cost is increased.
  • An object of the present invention is to provide an intercooler diagnostic system that can diagnose the cooling efficiency of an intercooler at low cost.
  • An intercooler diagnostic system of the present invention that achieves the above object is an intercooler diagnostic system for diagnosing the cooling efficiency of a diesel engine intercooler, and includes a cylinder intake pressure sensor and an intake manifold temperature sensor installed in an intake manifold of the diesel engine.
  • An intake air temperature sensor installed in the vicinity of the intake port of the intake pipe connected to the intake manifold, an atmospheric pressure sensor for measuring the atmospheric pressure, and an EGR valve for processing the measured values of these sensors and opening and closing the EGR passage
  • processing means for controlling, after the EGR valve is closed, the processing means measures the measured value P2 of the cylinder intake pressure sensor, the measured value T4 of the intake manifold temperature sensor, the measured value T1 of the intake temperature sensor, and the atmospheric pressure sensor.
  • the cooling efficiency ⁇ c of the intercooler is calculated by the following formulas (1) to (3), and it is diagnosed that the cooling efficiency of the intercooler is deteriorated when the cooling efficiency ⁇ c is less than a predetermined value. Is.
  • T3 Intercooler outlet temperature calculation value
  • ⁇ specific heat ratio
  • ⁇ compressor efficiency
  • the processing means includes notification means for notifying the diagnosis result of the cooling efficiency of the intercooler, the deterioration of the cooling efficiency of the intercooler can be transmitted to the driver of the vehicle at an early stage and with certainty.
  • the intercooler diagnostic system of the present invention is suitably used for general internal combustion engines.
  • the intercooler diagnostic system of the present invention it is only necessary to use a conventional sensor without newly installing a temperature sensor at the entrance / exit of the intercooler, so that the cooling efficiency of the intercooler can be diagnosed at low cost.
  • FIG. 1 is a configuration diagram of an intercooler diagnostic system according to an embodiment of the present invention.
  • FIG. 2 is a flowchart showing the processing contents of the processing means.
  • FIG. 3 is a configuration diagram of an intercooler diagnostic system according to another embodiment of the present invention.
  • FIG. 1 shows an intercooler diagnostic system according to an embodiment of the present invention.
  • the air drawn into the intake pipe 3 from the inlet 2 is compressed by the turbocharger 5 after passing through the air cleaner 4 and cooled by the intercooler 6. It is supplied to each of the four cylinders 8 via the intake manifold 7. Then, the combustion gas from each cylinder 8 is exhausted to the exhaust pipe 9, but a part of the combustion gas is diverted as EGR gas to the EGR passage 10 connected to the intake pipe 3 on the downstream side of the intercooler 6.
  • a water-cooled EGR cooler 11 and an EGR valve 12 that adjusts the flow rate of EGR gas are arranged in this order from the exhaust pipe 9 side.
  • an exhaust return passage 13 that connects the outlet of the EGR cooler 11 and the upstream exhaust pipe 9 is provided. Exhaust gas that has not been diverted to the EGR passage 10 is discharged to the outside from the discharge port 14 after the turbocharger 5 is rotationally driven.
  • the intercooler diagnostic system of the present invention includes a cylinder intake pressure sensor 15 and an intake manifold temperature sensor 16 installed in the intake manifold 7, and an intake air temperature sensor 17 installed in the intake pipe 3 between the air cleaner 4 and the turbocharger 5. And an atmospheric pressure sensor 18 for measuring the atmospheric pressure, and processing means 21 connected to the four sensors 15 to 18, the EGR valve 12 and the ECU (Engine Control Unit) 19 through signal lines 20a to 20f, respectively. Has been.
  • the cylinder intake pressure sensor 15 and the intake manifold temperature sensor 16 measure the pressure and temperature of the air in the intake manifold 7, respectively.
  • the intake air temperature sensor 17 measures the temperature of the air that is drawn from the intake port 2 and supplied to the turbocharger 5.
  • the atmospheric pressure sensor 18 is installed in the vicinity of the diesel engine 1 and measures the atmospheric pressure around the diesel engine 1. These four sensors 15 to 18 are conventionally installed in order to provide the ECU 19 with measured values indicating the operating state of the diesel engine 1.
  • the processing means 21 is composed of a CPU (Central Processing Unit) equipped with a storage unit, acquires measurement values from the four sensors 15 to 18 through the signal lines 20a to 20d, and opens the EGR valve 12 through the signal line 20e. Control the degree.
  • the processing unit 21 and the ECU 19 are separated from each other, but the processing unit 21 may be integrated by providing the ECU 19 with the function of the processing unit 21.
  • the processing means 21 closes the EGR valve 12 and turns off the function of the EGR cooler 11 (S20). Then, the measured value P2 of the cylinder intake pressure sensor 15, the measured value T4 of the intake manifold temperature sensor 16, the measured value T1 of the intake air temperature sensor 17, and the measured value P1 of the atmospheric pressure sensor 18 are acquired (S30).
  • T3 Intercooler outlet temperature calculation value
  • ⁇ specific heat ratio
  • ⁇ compressor efficiency
  • the cooling efficiency ⁇ c of the intercooler 6 is compared with a predetermined value (S60). If the cooling efficiency ⁇ c is less than the predetermined value, the cooling of the intercooler 6 is performed. It is diagnosed that the efficiency is deteriorated (S70), and conversely, if it is equal to or greater than the predetermined value, it is diagnosed that the cooling efficiency of the intercooler 6 is normal (S80). In addition, as a case where diagnostic conditions are materialized, the case where the vehicle speed of the vehicle carrying the diesel engine 1 is 20 km / h or more is illustrated.
  • the cooling efficiency ⁇ c of the intercooler 6 can be diagnosed at low cost. Further, since the conventional sensors 15 to 18 are used as they are, it is easy to attach the intercooler diagnostic system to the existing diesel engine 1.
  • the predetermined value used for diagnosing the cooling efficiency ⁇ c of the intercooler 6 varies depending on the size and performance of the diesel engine 1, but in the case of a general large vehicle, a value in the range of about 60 to 70% is used. It is desirable.
  • FIG. 3 shows an intercooler diagnostic system according to an embodiment of the present invention.
  • the notification means 22 for notifying the diagnosis result of the cooling efficiency ⁇ c of the intercooler 6 is connected to the processing means 21 through a signal line 20g.
  • Examples of the notification means 22 include a monitor and an alarm device installed in a driver's seat of a vehicle on which the diesel engine 1 is mounted.
  • the notification means 22 By providing the notification means 22 in this way, the deterioration of the cooling efficiency ⁇ c of the intercooler 6 can be transmitted early and reliably to the driver of the vehicle.
  • intercooler diagnostic system of the present invention is not limited to the vehicle diesel engine 1 as described above, but can be applied to other general internal combustion engines.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

Le système de diagnostic de refroidisseur intermédiaire qui diagnostique l'efficacité de refroidissement d'un refroidisseur intermédiaire (11) d'un moteur diésel (1), est configuré par : un capteur de pression d'admission de cylindre (15) ainsi qu'un capteur de température de distributeur d'entrée (16) disposés dans un distributeur d'entrée (7); un capteur de température d'admission (17) disposé à proximité d'une ouverture d'admission (2) d'un conduit d'admission (3); un capteur de pression atmosphérique (18) mesurant la pression atmosphérique; et un moyen de traitement (21). Le moyen de traitement (21) calcule l'efficacité de traitement (ηc) d'un refroidisseur intermédiaire (6) à l'aide d'un groupe de formules mettant en œuvre une valeur de mesure, ou similaire, desdits quatre capteurs (15 à 18), après fermeture d'un clapet RGE (12), et diagnostique l'efficacité de traitement (ηc) du refroidisseur intermédiaire (6) par comparaison de cette efficacité de traitement (ηc) et d'une valeur prédéfinie.
PCT/JP2012/079072 2011-11-18 2012-11-09 Système de diagnostic de refroidisseur intermédiaire WO2013073457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011253233A JP5857666B2 (ja) 2011-11-18 2011-11-18 インタークーラー診断システム
JP2011-253233 2011-11-18

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WO2013073457A1 true WO2013073457A1 (fr) 2013-05-23

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3011276A1 (fr) * 2013-10-01 2015-04-03 Renault Sa Procede de detection de la defaillance d'un refroidisseur d'air suralimente et dispositif de motorisation associe
WO2016195558A1 (fr) * 2015-06-03 2016-12-08 Volvo Construction Equipment Ab Procédé de surveillance de l'encrassement d'un refroidisseur d'air de suralimentation
US10547070B2 (en) 2018-03-09 2020-01-28 Toyota Motor Engineering & Manufacturing North America, Inc. STL actuation-path planning
US10590942B2 (en) 2017-12-08 2020-03-17 Toyota Motor Engineering & Manufacturing North America, Inc. Interpolation of homotopic operating states
US10665875B2 (en) 2017-12-08 2020-05-26 Toyota Motor Engineering & Manufacturing North America, Inc. Path control concept
US10714767B2 (en) 2017-12-07 2020-07-14 Toyota Motor Engineering & Manufacturing North America, Inc. Fuel cell air system safe operating region
US10871519B2 (en) 2017-11-07 2020-12-22 Toyota Motor Engineering & Manufacturing North America, Inc. Fuel cell stack prediction utilizing IHOS
US10971748B2 (en) 2017-12-08 2021-04-06 Toyota Motor Engineering & Manufacturing North America, Inc. Implementation of feedforward and feedback control in state mediator
US10985391B2 (en) 2018-03-06 2021-04-20 Toyota Motor Engineering & Manufacturing North America, Inc. Real time iterative solution using recursive calculation
US11482719B2 (en) 2017-12-08 2022-10-25 Toyota Jidosha Kabushiki Kaisha Equation based state estimate for air system controller

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101664549B1 (ko) * 2014-06-17 2016-10-11 현대자동차주식회사 인터쿨러 파이프 시험장치
US9670830B2 (en) * 2014-10-29 2017-06-06 GM Global Technology Operations LLC Method and apparatus for monitoring a coolant system for an exhaust gas recirculation system

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JP2002180889A (ja) * 2000-12-11 2002-06-26 Toyota Motor Corp 過給式内燃機関システムにおける過給後吸気温の検出方法、過給式内燃機関システムの運転制御装置、及び、過給式内燃機関システムにおけるインタークーラーの冷却異常検出装置
JP2003293821A (ja) * 2002-03-29 2003-10-15 Honda Motor Co Ltd 内燃機関の制御装置
JP2007146712A (ja) * 2005-11-25 2007-06-14 Honda Motor Co Ltd インタークーラの異常判定装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002180889A (ja) * 2000-12-11 2002-06-26 Toyota Motor Corp 過給式内燃機関システムにおける過給後吸気温の検出方法、過給式内燃機関システムの運転制御装置、及び、過給式内燃機関システムにおけるインタークーラーの冷却異常検出装置
JP2003293821A (ja) * 2002-03-29 2003-10-15 Honda Motor Co Ltd 内燃機関の制御装置
JP2007146712A (ja) * 2005-11-25 2007-06-14 Honda Motor Co Ltd インタークーラの異常判定装置

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3011276A1 (fr) * 2013-10-01 2015-04-03 Renault Sa Procede de detection de la defaillance d'un refroidisseur d'air suralimente et dispositif de motorisation associe
WO2015049451A1 (fr) * 2013-10-01 2015-04-09 Renault S.A.S. Procede de detection de la defaillance d'un refroidisseur d'air suralimente et dispositif de motorisation associe
WO2016195558A1 (fr) * 2015-06-03 2016-12-08 Volvo Construction Equipment Ab Procédé de surveillance de l'encrassement d'un refroidisseur d'air de suralimentation
US10871519B2 (en) 2017-11-07 2020-12-22 Toyota Motor Engineering & Manufacturing North America, Inc. Fuel cell stack prediction utilizing IHOS
US10714767B2 (en) 2017-12-07 2020-07-14 Toyota Motor Engineering & Manufacturing North America, Inc. Fuel cell air system safe operating region
US10590942B2 (en) 2017-12-08 2020-03-17 Toyota Motor Engineering & Manufacturing North America, Inc. Interpolation of homotopic operating states
US10665875B2 (en) 2017-12-08 2020-05-26 Toyota Motor Engineering & Manufacturing North America, Inc. Path control concept
US10971748B2 (en) 2017-12-08 2021-04-06 Toyota Motor Engineering & Manufacturing North America, Inc. Implementation of feedforward and feedback control in state mediator
US11482719B2 (en) 2017-12-08 2022-10-25 Toyota Jidosha Kabushiki Kaisha Equation based state estimate for air system controller
US10985391B2 (en) 2018-03-06 2021-04-20 Toyota Motor Engineering & Manufacturing North America, Inc. Real time iterative solution using recursive calculation
US10547070B2 (en) 2018-03-09 2020-01-28 Toyota Motor Engineering & Manufacturing North America, Inc. STL actuation-path planning

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Publication number Publication date
JP5857666B2 (ja) 2016-02-10
JP2013108415A (ja) 2013-06-06

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