[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

US20100162691A1 - Method of diagnosing the presence of an exhaust after-treatment component and a use of the method for vehicle on-board diagnosis - Google Patents

Method of diagnosing the presence of an exhaust after-treatment component and a use of the method for vehicle on-board diagnosis Download PDF

Info

Publication number
US20100162691A1
US20100162691A1 US11/909,578 US90957805A US2010162691A1 US 20100162691 A1 US20100162691 A1 US 20100162691A1 US 90957805 A US90957805 A US 90957805A US 2010162691 A1 US2010162691 A1 US 2010162691A1
Authority
US
United States
Prior art keywords
temperature signal
aftertreatment component
temperature
modified
exhaust
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
US11/909,578
Other versions
US7752901B1 (en
Inventor
Charlotte Holmen
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.)
Volvo Truck Corp
Original Assignee
Volvo Lastvagnar AB
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 Volvo Lastvagnar AB filed Critical Volvo Lastvagnar AB
Assigned to VOLVO LASTVAGNAR AB reassignment VOLVO LASTVAGNAR AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HOLMEN, CHARLOTTE
Publication of US20100162691A1 publication Critical patent/US20100162691A1/en
Application granted granted Critical
Publication of US7752901B1 publication Critical patent/US7752901B1/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0093—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are of the same type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/24—Determining the presence or absence of an exhaust treating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

Definitions

  • the present invention relates to a method for diagnosing the presence of an internal combustion engine exhaust aftertreatment component on a vehicle.
  • FIG. 1 an internal combustion engine with an exhaust aftertreatment system for utilizing the invention is illustrated diagrammatically.
  • FIG. 2 is a first graph illustrating temperature variations in the exhaust aftertreatment system shown in FIG. 1 .
  • FIG. 3 is a second graph illustrating temperature variations in the exhaust aftertreatment system.
  • FIG. 1 shows a general configuration of an exhaust aftertreatment system for an internal combustion engine 10 , including a first exhaust pipe segment 11 leading exhausts from the engine to a pre-catalyst 12 .
  • the pre-catalyst is connected to a selective catalyst reactor 13 via a second exhaust pipe segment 14 .
  • a third exhaust pipe segment 15 leads exhausts from the reactor 13 to the atmosphere.
  • a temperature sensor 16 is positioned at the second exhaust pipe segment 14 for measuring the temperature of the exhaust stream exiting the pre-catalyst 12 .
  • the temperature is measured continuously over a time period to provide a first temperature signal with fluctuating amplitude that is recorded by a data processor 17 .
  • a typical temperature/time graph is shown in FIG. 2 . Due to the fact that the pre-catalyst 12 comprises a thermic mass, i.e. the reactor monolith, the exhaust temperature variations are filtered when the exhaust stream passes through the pre-catalyst.
  • FIG. 3 An example of a typical un-filtered temperature graph is shown in FIG. 3 , showing temperature variations with higher frequency than in FIG. 2 . If the pre-catalyst 12 is not present in the exhaust aftertreatment system, the temperature sensor 16 will provide a signal with a similar signature as the graph shown in FIG. 3 .
  • the recorded temperature signal is modified by the data processor 17 to provide a second modified temperature signal.
  • the first and second temperature signals are compared to detect any significant difference between the signals.
  • the modified signal may be obtained by any type of analysis of the temperature signal that is based on signal frequency or signal derivative. For example, a low-pass filter in the data processor 17 may be used for removing signals with frequency over a certain level.
  • the first signal will have a signature similar to the graph of FIG. 3 .
  • the signal has been modified by means of the data processor 17 , the resulting second signal will have a signature similar to the graph of FIG. 2 .
  • the comparison between the two signals positively indicates that no catalyst reactor monolith is present upstream the temperature sensor 16 .
  • both first and second signals will have signatures similar to the graph of FIG. 2 .
  • the comparison between the two signals positively indicates that a thermic mass, e.g. a catalyst reactor monolith is present in the aftertreatment system upstream the temperature sensor 16 .
  • the method according to the invention can be applied to any type of aftertreatment component, as long as it comprises a thermic mass.
  • the aftertreatment component may for example be a particle filter. It is preferable that the aftertreatment component being diagnosed with the method according to the invention has a larger thermic mass than any other aftertreatment component positioned upstream.
  • the comparison of the two temperature signals can be performed in many different ways, both analogical and digital.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

In a method for diagnosing the presence of an internal combustion engine exhaust aftertreatment component on a vehicle, the exhaust temperature is measured downstream the aftertreatment component continuously over a time period to provide a first temperature signal with fluctuating amplitude. The temperature signal is modified to provide a second modified temperature signal. The first and second temperature signals are compared to detect any significant difference between the signals.

Description

    BACKGROUND AND SUMMARY
  • The present invention relates to a method for diagnosing the presence of an internal combustion engine exhaust aftertreatment component on a vehicle.
  • In recent years, statutory requirements pertaining to emissions from Diesel engines have been tightened up. For example, new legislation regarding on-board diagnosis requires that the presence of a so-called pre-catalyst is determined.
  • It is desirable to provide a method to determine whether an aftertreatment component in an aftertreatment system is present or not.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention will be described in greater detail below with reference to embodiments shown in the accompanying drawings.
  • In FIG. 1, an internal combustion engine with an exhaust aftertreatment system for utilizing the invention is illustrated diagrammatically.
  • FIG. 2 is a first graph illustrating temperature variations in the exhaust aftertreatment system shown in FIG. 1.
  • FIG. 3 is a second graph illustrating temperature variations in the exhaust aftertreatment system.
    •  DETAILED DESCRIPTION
  • FIG. 1 shows a general configuration of an exhaust aftertreatment system for an internal combustion engine 10, including a first exhaust pipe segment 11 leading exhausts from the engine to a pre-catalyst 12. The pre-catalyst is connected to a selective catalyst reactor 13 via a second exhaust pipe segment 14. A third exhaust pipe segment 15 leads exhausts from the reactor 13 to the atmosphere.
  • A temperature sensor 16 is positioned at the second exhaust pipe segment 14 for measuring the temperature of the exhaust stream exiting the pre-catalyst 12. The temperature is measured continuously over a time period to provide a first temperature signal with fluctuating amplitude that is recorded by a data processor 17. A typical temperature/time graph is shown in FIG. 2. Due to the fact that the pre-catalyst 12 comprises a thermic mass, i.e. the reactor monolith, the exhaust temperature variations are filtered when the exhaust stream passes through the pre-catalyst.
  • An example of a typical un-filtered temperature graph is shown in FIG. 3, showing temperature variations with higher frequency than in FIG. 2. If the pre-catalyst 12 is not present in the exhaust aftertreatment system, the temperature sensor 16 will provide a signal with a similar signature as the graph shown in FIG. 3.
  • The recorded temperature signal is modified by the data processor 17 to provide a second modified temperature signal. The first and second temperature signals are compared to detect any significant difference between the signals. The modified signal may be obtained by any type of analysis of the temperature signal that is based on signal frequency or signal derivative. For example, a low-pass filter in the data processor 17 may be used for removing signals with frequency over a certain level. By integrating the unfiltered and filtered temperature signals and calculating the difference between the two, it is possible to determine whether the catalyst reactor monolith is present. A large difference is the result when the monolith is missing and a small difference when the monolith is present.
  • If the pre-catalyst is not present in the aftertreatment system, the first signal will have a signature similar to the graph of FIG. 3. When the signal has been modified by means of the data processor 17, the resulting second signal will have a signature similar to the graph of FIG. 2. Thus, the comparison between the two signals positively indicates that no catalyst reactor monolith is present upstream the temperature sensor 16.
  • If the pre-catalyst is present, both first and second signals will have signatures similar to the graph of FIG. 2. Thus, the comparison between the two signals positively indicates that a thermic mass, e.g. a catalyst reactor monolith is present in the aftertreatment system upstream the temperature sensor 16.
  • The invention is not to be regarded as being limited to the illustrative embodiments described above, but a number of variants and modifications are possible within the scope of the following patent claims. For example, the method according to the invention can be applied to any type of aftertreatment component, as long as it comprises a thermic mass. The aftertreatment component may for example be a particle filter. It is preferable that the aftertreatment component being diagnosed with the method according to the invention has a larger thermic mass than any other aftertreatment component positioned upstream. The comparison of the two temperature signals can be performed in many different ways, both analogical and digital.

Claims (11)

1. A method of diagnosing the presence of an internal combustion engine exhaust aftertreatment component on a vehicle using a single temperature signal source, wherin the aftertreatment component component comprises a thermic mass, comprising
measuring the exhaust temperature downstream of the aftertreatment component continuously over a time period to provide a first temperature signal with fluctuating amplitude,
modifying the temperature signal to provide a second modified temperature signal using a temperature signal analysis based on signal frequency or signal derivative, and
comparing the first temperature signal and the second modified temperature signal to determine whether there is a difference between the signals.
2. A method according to claim 1, wherein the aftertreatment component is a catalyst reactor.
3. A method according to claim 2, wherein the aftertreatment component is positioned as a first aftertreatment component downstream of the engine.
4. A method according to claim 3, wherein modifying comprises filtering the temperature signal.
5. A method according to claim 4, wherein the first temperature signal is unfiltered, the method comprising integrating both the first temperature signal and the second modified filtered temperature signal and calculating a difference between the two integrals.
6. Use of a method according to claim 1 for on-board diagnosis of presence of a catalyst reactor in an exhaust aftertreatment system of a vehicle.
7. A method according to claim 1, wherein the aftertreatment component is positioned as a first aftertreatment component downstream of the engine.
8. A method according to claim 7, wherein modifying comprises filtering the temperature signal.
9. A method according to claim 8, wherein the first temperature signal is unfiltered, the method comprising integrating both the first temperature signal and the second modified temperature signal and calculating a difference between the two integrals.
10. A method according to claim 2, wherein modifying comprises filtering the temperature signal.
11. A method according to claim 10, wherein the first temperature signal is unfiltered, the method comprising integrating both the first temperature signal and the second modified temperature signal and calculating a difference between the two integrals.
US11/909,578 2005-04-14 2005-04-14 Method of diagnosing the presence of an exhaust after-treatment component and a use of the method for vehicle on-board diagnosis Active 2026-09-15 US7752901B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2005/000545 WO2006110071A1 (en) 2005-04-14 2005-04-14 Method of diagnosing the presence of an exhaust after-treatment component and a use of the method for vehicle on-board diagnosis

Publications (2)

Publication Number Publication Date
US20100162691A1 true US20100162691A1 (en) 2010-07-01
US7752901B1 US7752901B1 (en) 2010-07-13

Family

ID=37087278

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/909,578 Active 2026-09-15 US7752901B1 (en) 2005-04-14 2005-04-14 Method of diagnosing the presence of an exhaust after-treatment component and a use of the method for vehicle on-board diagnosis

Country Status (8)

Country Link
US (1) US7752901B1 (en)
EP (1) EP1875054B1 (en)
JP (1) JP4500359B2 (en)
CN (1) CN100562654C (en)
AT (1) ATE458903T1 (en)
BR (1) BRPI0520162B1 (en)
DE (1) DE602005019630D1 (en)
WO (1) WO2006110071A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090210129A1 (en) * 2005-05-31 2009-08-20 Renault S.A.S. Method and device for detecting the presence of an exhaust gas treatment system in an exhaust line of an internal combustion engine
DE102014204327A1 (en) 2013-03-20 2014-09-25 Ford Global Technologies, Llc Method and apparatus for checking the failure or presence of components in an exhaust system
US20160363032A1 (en) * 2015-06-15 2016-12-15 Deere & Company Catalytic device detection system
US20240077011A1 (en) * 2022-09-05 2024-03-07 Toyota Jidosha Kabushiki Kaisha Removal determination device for exhaust gas purification device

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009003091A1 (en) * 2009-05-14 2010-11-18 Robert Bosch Gmbh Method and device for monitoring a arranged in an exhaust region of an internal combustion engine component
FR3019212B1 (en) * 2014-03-28 2019-03-22 Psa Automobiles Sa. MOTOR VEHICLE COMBUSTION ENGINE WITH PARTICLE FILTER ABSENCE DETECTION
US11932080B2 (en) 2020-08-20 2024-03-19 Denso International America, Inc. Diagnostic and recirculation control systems and methods
US11636870B2 (en) 2020-08-20 2023-04-25 Denso International America, Inc. Smoking cessation systems and methods
US11760169B2 (en) 2020-08-20 2023-09-19 Denso International America, Inc. Particulate control systems and methods for olfaction sensors
US12017506B2 (en) 2020-08-20 2024-06-25 Denso International America, Inc. Passenger cabin air control systems and methods
US11828210B2 (en) 2020-08-20 2023-11-28 Denso International America, Inc. Diagnostic systems and methods of vehicles using olfaction
US11760170B2 (en) 2020-08-20 2023-09-19 Denso International America, Inc. Olfaction sensor preservation systems and methods
US11813926B2 (en) 2020-08-20 2023-11-14 Denso International America, Inc. Binding agent and olfaction sensor
US11881093B2 (en) 2020-08-20 2024-01-23 Denso International America, Inc. Systems and methods for identifying smoking in vehicles
DE102020212231A1 (en) * 2020-09-29 2022-03-31 Robert Bosch Gesellschaft mit beschränkter Haftung Method for monitoring a sensor arranged in an exhaust gas area of an internal combustion engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5219228A (en) * 1992-05-11 1993-06-15 General Motors Corporation Exhaust gas temperature measuring system utilizing existing oxygen sensor
US6675639B1 (en) * 2000-10-25 2004-01-13 Caterpillar Inc Apparatus and method to detect cylinder faults of internal combustion engines via exhaust temperature monitoring
US20050102076A1 (en) * 2003-11-10 2005-05-12 Denso Corporation Exhaust temperature sensor malfunction detection apparatus
US20060080959A1 (en) * 2004-10-14 2006-04-20 Victoriano Ruiz Engine turbine temperature control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9003316D0 (en) * 1990-02-14 1990-04-11 Lucas Ind Plc Monitoring of operation of catalytic converter
DE10228659A1 (en) * 2002-06-27 2004-01-22 Daimlerchrysler Ag Method for monitoring an exhaust system of a motor vehicle
DE10254843A1 (en) * 2002-11-25 2004-06-03 Robert Bosch Gmbh Method of monitoring motor vehicle exhaust gas cleaning system involves injecting urea-water mix into exhaust to determine if sensor output varies
FR2864145B1 (en) 2003-12-19 2007-09-07 Renault Sas METHOD FOR DETECTING THE PRESENCE OF A DEPOLLUTION SYSTEM BY MEASURING TEMPERATURE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5219228A (en) * 1992-05-11 1993-06-15 General Motors Corporation Exhaust gas temperature measuring system utilizing existing oxygen sensor
US6675639B1 (en) * 2000-10-25 2004-01-13 Caterpillar Inc Apparatus and method to detect cylinder faults of internal combustion engines via exhaust temperature monitoring
US20050102076A1 (en) * 2003-11-10 2005-05-12 Denso Corporation Exhaust temperature sensor malfunction detection apparatus
US20060080959A1 (en) * 2004-10-14 2006-04-20 Victoriano Ruiz Engine turbine temperature control system
US7305825B2 (en) * 2004-10-14 2007-12-11 General Motors Corporation Engine turbine temperature control system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090210129A1 (en) * 2005-05-31 2009-08-20 Renault S.A.S. Method and device for detecting the presence of an exhaust gas treatment system in an exhaust line of an internal combustion engine
US7937994B2 (en) * 2005-05-31 2011-05-10 Renault S.A.S. Method and device for detecting the presence of an exhaust gas treatment system in an exhaust line of an internal combustion engine
DE102014204327A1 (en) 2013-03-20 2014-09-25 Ford Global Technologies, Llc Method and apparatus for checking the failure or presence of components in an exhaust system
DE102014204327B4 (en) * 2013-03-20 2016-11-03 Ford Global Technologies, Llc Method and apparatus for checking the failure or presence of components in an exhaust system
US20160363032A1 (en) * 2015-06-15 2016-12-15 Deere & Company Catalytic device detection system
US10190470B2 (en) * 2015-06-15 2019-01-29 Deere & Company Catalytic device detection system
US20240077011A1 (en) * 2022-09-05 2024-03-07 Toyota Jidosha Kabushiki Kaisha Removal determination device for exhaust gas purification device

Also Published As

Publication number Publication date
JP2008536054A (en) 2008-09-04
EP1875054B1 (en) 2010-02-24
JP4500359B2 (en) 2010-07-14
WO2006110071A1 (en) 2006-10-19
DE602005019630D1 (en) 2010-04-08
EP1875054A1 (en) 2008-01-09
CN101163867A (en) 2008-04-16
CN100562654C (en) 2009-11-25
ATE458903T1 (en) 2010-03-15
BRPI0520162A2 (en) 2009-04-22
US7752901B1 (en) 2010-07-13
BRPI0520162B1 (en) 2019-04-30

Similar Documents

Publication Publication Date Title
US7752901B1 (en) Method of diagnosing the presence of an exhaust after-treatment component and a use of the method for vehicle on-board diagnosis
US9038369B2 (en) Systems and methods for aftertreatment system diagnostics
US10060845B2 (en) Systems and methods for reducing secondary emissions from catalyst components
JP4942744B2 (en) Method and device for detecting the presence of an exhaust gas treatment system in an exhaust line of an internal combustion engine
WO2010073511A1 (en) Method of diagnosing regeneration failure of exhaust purifying device
KR102517259B1 (en) Method for diagnosing particulate filter and computer program product thereof
US20150167517A1 (en) Method for detecting abnormally frequent diesel particulate filter regeneration, engine and exhaust aftertreatment system, and warning system and method
US20120180455A1 (en) Method for diagnosing an exhaust gas post-treatment
CN105089759B (en) The method and apparatus that dismounting for the component to exhaust gas purification apparatus is diagnosed
JP2004526959A (en) Method and apparatus for monitoring a sensor
EP1580412A1 (en) Method for sensing exhaust gas for obd
US9695732B2 (en) Diagnostic device
JP2009085126A (en) Exhaust emission control device for internal combustion engine
US10156175B1 (en) Method and system for rationalizing a delta pressure sensor for a gasoline particulate filter in a vehicle propulsion system
CN106837496B (en) Engine particulate purifying regeneration control system
US9068495B2 (en) Oxidation catalyst/hydrocarbon injector testing system
US7370472B2 (en) Method and apparatus for determining loading of an emissions trap by use of transfer function analysis
JP4226007B2 (en) Exhaust gas purification device used for internal combustion engine and method for operating the exhaust gas purification device
US8538661B2 (en) Exhaust treatment methods and systems
US10584624B2 (en) Method and arrangement for correcting for error of particulate matter sensors
CN114198186B (en) Method and device for diagnosing a coated gasoline particulate filter of an exhaust system of an internal combustion engine
KR102342938B1 (en) Diesel Engines Including Diesel Particulate Filters and Methods for Operating Diesel Engines
JP2003020933A (en) Exhaust emission control device for internal combustion engine
KR20130088503A (en) Device and method for measuring real time soot oxidation rate of diesel particulate filter using temperature sensor, and regeneration control method of diesel particulate filter using the method for measuring real time soot oxidation rate
KR100901937B1 (en) Method for diagnosing function of reduction non-methanic hydrocarbon in selective catalytic reduction system

Legal Events

Date Code Title Description
AS Assignment

Owner name: VOLVO LASTVAGNAR AB,VIRGINIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOLMEN, CHARLOTTE;REEL/FRAME:019869/0012

Effective date: 20070913

Owner name: VOLVO LASTVAGNAR AB, VIRGINIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOLMEN, CHARLOTTE;REEL/FRAME:019869/0012

Effective date: 20070913

STCF Information on status: patent grant

Free format text: PATENTED CASE

FPAY Fee payment

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552)

Year of fee payment: 8

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 12