US20130283767A1 - Oxidation catalyst monitoring - Google Patents
Oxidation catalyst monitoring Download PDFInfo
- Publication number
- US20130283767A1 US20130283767A1 US13/459,394 US201213459394A US2013283767A1 US 20130283767 A1 US20130283767 A1 US 20130283767A1 US 201213459394 A US201213459394 A US 201213459394A US 2013283767 A1 US2013283767 A1 US 2013283767A1
- Authority
- US
- United States
- Prior art keywords
- oxidation catalyst
- factor
- exhaust
- efficiency curve
- monitoring
- 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.)
- Abandoned
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
- 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
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
-
- 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
- F01N3/103—Oxidation catalysts for HC and CO only
-
- 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
- F02D41/1446—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 exhaust temperatures
-
- 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
- F01N2550/02—Catalytic activity of catalytic converters
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/04—Methods of control or diagnosing
- F01N2900/0408—Methods of control or diagnosing using a feed-back loop
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/10—Parameters used for exhaust control or diagnosing said parameters being related to the vehicle or its components
- F01N2900/102—Travelling distance
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1621—Catalyst conversion efficiency
-
- 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
- F02D2041/228—Warning displays
-
- 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
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0802—Temperature of the exhaust gas treatment apparatus
-
- 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
Definitions
- a control method for monitoring an oxidation catalyst includes: determining an open loop factor based on an aging factor and an efficiency curve; controlling an injection of hydrocarbons into an exhaust stream based on the open loop factor; and monitoring the oxidation catalyst based on the injection of hydrocarbons.
- module refers to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and memory that executes one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality.
- ASIC application specific integrated circuit
- processor shared, dedicated, or group
- memory that executes one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A control method for monitoring an oxidation catalyst of an exhaust system is provided. The control method includes determining an open loop factor based on an aging factor and an efficiency curve; controlling an injection of hydrocarbons into an exhaust stream based on the open loop factor; and monitoring the oxidation catalyst based on the injection of hydrocarbons.
Description
- The subject invention relates to methods, and systems for monitoring an oxidation catalyst of an exhaust system.
- An oxidation catalyst device is provided in an exhaust system to treat unburned gaseous and non-volatile hydrocarbon (HC) and carbon monoxide (CO). The oxidation catalyst oxidizes the HC and CO under high temperatures conditions to form carbon dioxide (CO2) and water (H2O). As the oxidation catalyst ages, its ability to oxidize the HC and CO is affected. Accordingly, it is desirable to provide methods and systems that monitor the operation of the oxidation catalyst.
- In one exemplary embodiment, a control method for monitoring an oxidation catalyst is provided. The control method includes: determining an open loop factor based on an aging factor and an efficiency curve; controlling an injection of hydrocarbons into an exhaust stream based on the open loop factor; and monitoring the oxidation catalyst based on the injection of hydrocarbons.
- In another exemplary embodiment, a control system for monitoring an oxidation catalyst of an exhaust system is provided. The control system includes a first module that determines an open loop factor based on an aging factor and an efficiency curve. A second module controls an injection of hydrocarbons into an exhaust stream based on the open loop factor. A third module monitors the oxidation catalyst based on the injection of hydrocarbons.
- In yet another exemplary embodiment, an exhaust system of an engine is provided. The exhaust system includes an oxidation catalyst, and a control module. The control module determines an open loop factor based on an aging factor and an efficiency curve, injects hydrocarbons into an exhaust stream based on the open loop factor, and monitors the oxidation catalyst based on the injection of hydrocarbons.
- The above features and advantages and other features and advantages of the invention are readily apparent from the following detailed description of the invention when taken in connection with the accompanying drawings.
- Other features, advantages and details appear, by way of example only, in the following detailed description of embodiments, the detailed description referring to the drawings in which:
-
FIG. 1 is a functional block diagram of a vehicle including an engine and exhaust system in accordance with exemplary embodiments; -
FIG. 2 is a dataflow diagram of an exhaust system control system in accordance with exemplary embodiments; and -
FIG. 3 is a flowchart illustrating an exhaust system control method in accordance with exemplary embodiments. - The following description is merely exemplary in nature and is not intended to limit the present disclosure, its application or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features. As used herein, the term module refers to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and memory that executes one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality.
- Referring now to
FIG. 1 , an exemplary embodiment is directed to avehicle 10 that includes anexhaust treatment system 12 for the reduction of regulated exhaust gas constituents of aninternal combustion engine 14. As can be appreciated, theexhaust treatment system 12 described herein can be implemented in various engine systems. Such engine systems may include, for example, but are not limited to, diesel engine systems, gasoline engine systems, and homogeneous charge compression ignition engine systems. - As shown in
FIG. 1 , theexhaust treatment system 12 generally includes one or moreexhaust gas conduits 16, and one or more exhaust treatment devices. The exhaust treatment devices may include an oxidation catalyst device (OC) 18. In the example ofFIG. 1 , the exhaust treatment devices further include a selective catalytic reduction device (SCR) 20 and a particulate filter (PF) 22. As can be appreciated, theexhaust treatment system 12 of the present disclosure may include various combinations of theOC 18 and other exhaust treatment devices and is not limited to the present example. - In
FIG. 1 , theexhaust gas conduit 16, which may comprise several segments, transportsexhaust gas 24 from theengine 14 to the exhaust treatment devices of theexhaust treatment system 12. TheOC 18 may include, for example, a flow-through metal or ceramic monolith substrate. The substrate may be packaged in a shell or canister having an inlet and an outlet in fluid communication with theexhaust gas conduit 16. The substrate may include an oxidation catalyst compound disposed thereon. The oxidation catalyst compound may be applied as a wash coat and may contain platinum group metals such as platinum (Pt), palladium (Pd), rhodium (Rh) or other suitable oxidizing catalysts, or combination thereof. TheOC 18 treats unburned gaseous and non-volatile HC and CO, which are oxidized to form CO2 and H2O. - A
control module 32 controls theengine 14 and one or more components of theexhaust treatment system 12 based on sensed and/or modeled data. For example, one ormore sensors 34 sense a temperature of theexhaust gas 24 at various locations in theexhaust system 12 and generates a sensor signal based thereon. Thecontrol module 32 receives the signal and monitors the operation of theOC 18 based on the signal and the OC monitoring systems and methods of the present disclosure. - In various embodiments, the
control module 32 adjusts a level of HC (e.g. excess fuel) present in the exhaust gas by, controlling an injection of fuel into the exhaust gas (e.g., into the cylinder or the exhaust conduit). Thecontrol module 32 adjusts the level based on an aging factor and an efficiency factor. Thecontrol module 32 monitors the operation of theOC 18 based on the adjusted HC injection and sets a diagnostic code based on the monitoring. Thecontrol module 32 can further report the diagnostic code according to various reporting methods, including, but not limited to, using in-vehicle communication reporting messages and/or off-vehicle reporting messages. - Referring now to
FIG. 2 , and with continued reference toFIG. 1 , a dataflow diagram illustrates various embodiments of an exhaust system control system that may be embedded within thecontrol module 32. Various embodiments of exhaust system control systems according to the present disclosure may include any number of sub-modules embedded within thecontrol module 32. As can be appreciated, the sub-modules shown inFIG. 2 may be combined and/or further partitioned to similarly monitor the operation of the OC 18 (FIG. 1 ). Inputs to the system may be sensed from theexhaust system 12, received from other control modules (not shown), and/or determined/modeled by other sub-modules (not shown) within thecontrol module 32. In various embodiments, thecontrol module 32 includes afactor determination module 40, anHC control module 42, and anevaluation module 44. - The
factor determination module 40 receives as input anaging factor 46 and anefficiency curve 48. Theaging factor 46 is a value that indicates an age of the OC 18 (FIG. 1 ). For example, theaging factor 46 can be based on miles driven, hours of operation of the engine 14 (FIG. 1 ), or any other time based value. Theefficiency curve 48 is a set of data indicating predicted efficiencies of the OC 18 (FIG. 1 ) at various ages. Theefficiency curve 48, for example, can be determined from exhaust system parameters or can be predefined based on physical characteristics of the OC 18 (FIG. 1 ). - Based on the
aging factor 46 and theefficiency curve 48, thefactor determination module 40 determines anopen loop factor 50. In various embodiments, theopen loop factor 50 can be between, for example, one and two, and can be retrieved from a lookup table that is indexed by theefficiency curve 48 and theaging factor 46. - The
HC control module 42 receives as input theopen loop factor 50. Based on theopen loop factor 50, theHC control module 42 generatescontrol signals 52 to the engine 14 (FIG. 1 ) and/or the exhaust system 12 (FIG. 1 ) to control a level of hydrocarbon in the exhaust gas 24 (FIG. 1 ). For example, theopen loop factor 50 may be multiplied by a determinedHC quantity 54 to determine an adjustedHC quantity 56. Thecontrol signals 54 are generated to the engine 14 (FIG. 1 ) and/or the exhaust system 12 (FIG. 1 ) based on the adjustedHC quantity 56. - The
reporting module 44 receives asinput sensor signals 58 indicating a temperature of the exhaust gas 24 (FIG. 1 ) downstream of the OC 18 (FIG. 1 ). Thereporting module 44 evaluates thesensor signals 58 based on the adjustedHC quantity 56 to determine if the actual temperature has reached an expected temperature. If the actual temperature is equal to or within a range of the expected temperature, then the OC 18 (FIG. 1 ) is diagnosed as being operational and a fault status or diagnostic code is set to indicate no fault. If, however the actual temperature is outside of the range of the expected temperature, then the OC 18 (FIG. 1 ) is diagnosed as being faulty and a fault status or diagnostic code is set to indicate a fault. - The reporting
module 44 may then report the fault status or diagnostic code via amessage 60. In various embodiments, the reportingmodule 44 generates themessage 60 on a serial data bus (not shown) of the vehicle 10 (FIG. 1 ), where the message can be transmitted to a remote location using a telematics system (not shown) of the vehicle 10 (FIG. 1 ) or can be retrieved by a technician tool (not shown) connected to the vehicle 10 (FIG. 1 ). - Referring now to
FIG. 3 , and with continued reference toFIGS. 1 and 2 , a flowchart illustrates an exhaust system control method that can be performed by thecontrol module 32 ofFIG. 1 in accordance with the present disclosure. As can be appreciated in light of the disclosure, the order of operation within the method is not limited to the sequential execution as illustrated inFIG. 3 , but may be performed in one or more varying orders as applicable and in accordance with the present disclosure. - In various embodiments, the method can be scheduled to run based on predetermined events, and/or run continually during operation of the
engine 14. - In one example, the method may begin at 100. The aging
factor 46 is determined at 100. Theefficiency curve 48 is determined at 110. Theopen loop factor 50 is determined from the agingfactor 46 and theefficiency curve 48 at 120. The adjustedHC amount 56 is determined based on theopen loop factor 46 at 130. The control signals 52 are generated to achieve the adjustedHC amount 56 at 140. - The sensor signals 58 are evaluated at 150. If the sensor signals 58 indicate the exhaust temperature is within a range at 150, then the fault status is set to indicate no fault at 160 and the
message 60 is generated that includes the fault status at 170. If, however, the sensor signals 58 indicate that the exhaust temperature is outside of a range at 150, then the fault status is set to indicate a fault at 180 and themessage 60 is generated that includes the fault status at 170. The method may end at 190. - While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the application.
Claims (17)
1. A control method for monitoring an oxidation catalyst of an exhaust system, comprising:
determining an open loop factor based on an aging factor and an efficiency curve;
controlling an injection of hydrocarbons into an exhaust stream based on the open loop factor; and
monitoring the oxidation catalyst based on the injection of hydrocarbons.
2. The control method of claim 1 , wherein the aging factor is determined based on at least one of miles driven, and a time of operation.
3. The control method of claim 1 , wherein the efficiency curve is predefined based on physical characteristics of the oxidation catalyst.
4. The control method of claim 1 , wherein the efficiency curve is determined based on sensed parameters of the exhaust system.
5. The control method of claim 1 , wherein the monitoring the oxidation catalyst comprises monitoring a temperature of exhaust gas exiting the oxidation catalyst.
6. The control method of claim 5 , further comprising generating a message based on the monitoring.
7. A control system for monitoring an oxidation catalyst of an exhaust system, comprising:
a first module that determines an open loop factor based on an aging factor and an efficiency curve;
a second module that controls injection of hydrocarbons into an exhaust stream based on the open loop factor; and
a third module that monitors the oxidation catalyst based on the injection of hydrocarbons.
8. The control system of claim 7 , wherein the aging factor is determined based on at least one of miles driven, and a time of operation.
9. The control system of claim 7 , wherein the efficiency curve is predefined based on physical characteristics of the oxidation catalyst.
10. The control system of claim 7 , wherein the efficiency curve is determined based on sensed parameters of the exhaust system.
11. The control system of claim 7 , wherein the third module monitors the oxidation catalyst based on a temperature of exhaust gas exiting the oxidation catalyst.
12. The control system of claim 11 , wherein the third module generates a message based on the monitoring.
13. An exhaust system of an engine, comprising:
an oxidation catalyst; and
a control module that determines an open loop factor based on an aging factor and an efficiency curve, that injects hydrocarbons into an exhaust stream based on the open loop factor, and that monitors the oxidation catalyst based on the injection of hydrocarbons.
14. The exhaust system of claim 13 , wherein the aging factor is determined based on at least one of miles driven, and a time of operation.
15. The exhaust system of claim 13 , wherein the efficiency curve is predefined based on physical characteristics of the oxidation catalyst.
16. The exhaust system of claim 13 , wherein the efficiency curve is determined based on sensed parameters of the exhaust system.
17. The exhaust system of claim 13 , wherein the control module monitors the oxidation catalyst based on a temperature of exhaust gas exiting the oxidation catalyst.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/459,394 US20130283767A1 (en) | 2012-04-30 | 2012-04-30 | Oxidation catalyst monitoring |
DE102013207228A DE102013207228A1 (en) | 2012-04-30 | 2013-04-22 | Oxidation Catalyst Monitor |
CN2013101579248A CN103375238A (en) | 2012-04-30 | 2013-05-02 | Oxidation catalyst monitoring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/459,394 US20130283767A1 (en) | 2012-04-30 | 2012-04-30 | Oxidation catalyst monitoring |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130283767A1 true US20130283767A1 (en) | 2013-10-31 |
Family
ID=49323420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/459,394 Abandoned US20130283767A1 (en) | 2012-04-30 | 2012-04-30 | Oxidation catalyst monitoring |
Country Status (3)
Country | Link |
---|---|
US (1) | US20130283767A1 (en) |
CN (1) | CN103375238A (en) |
DE (1) | DE102013207228A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120240552A1 (en) * | 2011-03-21 | 2012-09-27 | GM Global Technology Operations LLC | Method of operating an exhaust gas treatment system to prevent quenching during regeneration |
EP3029290A1 (en) * | 2014-12-03 | 2016-06-08 | NGK Insulators, Ltd. | Catalyst deterioration diagnosis system and catalyst deterioration diagnosis method |
EP3029292A1 (en) * | 2014-12-03 | 2016-06-08 | NGK Insulators, Ltd. | Catalyst deterioration diagnosis method |
EP3029291A1 (en) * | 2014-12-03 | 2016-06-08 | NGK Insulators, Ltd. | Catalyst deterioration diagnosis method |
FR3045103A1 (en) * | 2015-12-11 | 2017-06-16 | Renault Sas | METHOD FOR CONTROLLING A MOTORIZATION DEVICE AND ASSOCIATED MOTORIZATION DEVICE |
US9879587B2 (en) | 2015-10-23 | 2018-01-30 | GM Global Technology Operations LLC | Diagnosing oxidation catalyst device with hydrocarbon storage |
CN108463625A (en) * | 2015-11-16 | 2018-08-28 | 通用电气公司 | The method that air-fuel (A/F) control is adapted to for catalyst aging |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104314651B (en) * | 2014-08-15 | 2017-11-10 | 潍柴动力股份有限公司 | A kind of three-way catalyst aging modification method and correcting device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070006570A1 (en) * | 2003-05-22 | 2007-01-11 | Umicore Ag & Co. Kg | Method of operating a system comprising a diesel engine and catalyst for exhaust gas purification |
US20100269489A1 (en) * | 2009-04-22 | 2010-10-28 | Gm Global Technology Operations, Inc. | Oxidation catalyst outlet temperature correction systems and methods |
US20110099975A1 (en) * | 2009-11-03 | 2011-05-05 | Owen Herman Bailey | Architectural diesel oxidation catalyst for enhanced no2 generator |
WO2011061424A1 (en) * | 2009-11-17 | 2011-05-26 | Peugeot Citroën Automobiles SA | Method for controlling a system for the treatment of exhaust gases from an internal combustion engine |
US8443589B2 (en) * | 2004-06-18 | 2013-05-21 | GM Global Technology Operations LLC | Diesel oxidation catalyst efficiency diagnostic method |
US8504280B2 (en) * | 2010-09-21 | 2013-08-06 | GM Global Technology Operations LLC | Fuel control diagnostic system and method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102374001B (en) * | 2010-08-06 | 2013-07-10 | 长春易控汽车电子有限公司 | Ageing failure diagnosis method of engine catalytic converter |
CN102230426B (en) * | 2011-05-18 | 2013-11-06 | 联合汽车电子有限公司 | Fault diagnosis and compensation method for oxygen sensor |
-
2012
- 2012-04-30 US US13/459,394 patent/US20130283767A1/en not_active Abandoned
-
2013
- 2013-04-22 DE DE102013207228A patent/DE102013207228A1/en not_active Ceased
- 2013-05-02 CN CN2013101579248A patent/CN103375238A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070006570A1 (en) * | 2003-05-22 | 2007-01-11 | Umicore Ag & Co. Kg | Method of operating a system comprising a diesel engine and catalyst for exhaust gas purification |
US8443589B2 (en) * | 2004-06-18 | 2013-05-21 | GM Global Technology Operations LLC | Diesel oxidation catalyst efficiency diagnostic method |
US20100269489A1 (en) * | 2009-04-22 | 2010-10-28 | Gm Global Technology Operations, Inc. | Oxidation catalyst outlet temperature correction systems and methods |
US20110099975A1 (en) * | 2009-11-03 | 2011-05-05 | Owen Herman Bailey | Architectural diesel oxidation catalyst for enhanced no2 generator |
WO2011061424A1 (en) * | 2009-11-17 | 2011-05-26 | Peugeot Citroën Automobiles SA | Method for controlling a system for the treatment of exhaust gases from an internal combustion engine |
US20120227383A1 (en) * | 2009-11-17 | 2012-09-13 | Peugeot Citroen Automobiles Sa | Method for controlling a system for the treatment of exhaust gases from an internal combustion engine |
US8504280B2 (en) * | 2010-09-21 | 2013-08-06 | GM Global Technology Operations LLC | Fuel control diagnostic system and method |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120240552A1 (en) * | 2011-03-21 | 2012-09-27 | GM Global Technology Operations LLC | Method of operating an exhaust gas treatment system to prevent quenching during regeneration |
US9371763B2 (en) * | 2011-03-21 | 2016-06-21 | GM Global Technology Operations LLC | Method of operating an exhaust gas treatment system to prevent quenching during regeneration |
EP3029290A1 (en) * | 2014-12-03 | 2016-06-08 | NGK Insulators, Ltd. | Catalyst deterioration diagnosis system and catalyst deterioration diagnosis method |
EP3029292A1 (en) * | 2014-12-03 | 2016-06-08 | NGK Insulators, Ltd. | Catalyst deterioration diagnosis method |
EP3029291A1 (en) * | 2014-12-03 | 2016-06-08 | NGK Insulators, Ltd. | Catalyst deterioration diagnosis method |
US9891139B2 (en) | 2014-12-03 | 2018-02-13 | Ngk Insulators, Ltd. | Catalyst deterioration diagnosis system and catalyst deterioration diagnosis method |
US10196958B2 (en) | 2014-12-03 | 2019-02-05 | Ngk Insulators, Ltd. | Catalyst deterioration diagnosis method |
EP3441586A1 (en) * | 2014-12-03 | 2019-02-13 | NGK Insulators, Ltd. | Catalyst deterioration diagnosis method |
EP3441585A1 (en) * | 2014-12-03 | 2019-02-13 | NGK Insulators, Ltd. | Catalyst deterioration diagnosis method |
US9879587B2 (en) | 2015-10-23 | 2018-01-30 | GM Global Technology Operations LLC | Diagnosing oxidation catalyst device with hydrocarbon storage |
CN108463625A (en) * | 2015-11-16 | 2018-08-28 | 通用电气公司 | The method that air-fuel (A/F) control is adapted to for catalyst aging |
FR3045103A1 (en) * | 2015-12-11 | 2017-06-16 | Renault Sas | METHOD FOR CONTROLLING A MOTORIZATION DEVICE AND ASSOCIATED MOTORIZATION DEVICE |
Also Published As
Publication number | Publication date |
---|---|
CN103375238A (en) | 2013-10-30 |
DE102013207228A1 (en) | 2013-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11725564B2 (en) | Diagnostic methods for a high efficiency exhaust aftertreatment system | |
US20130283767A1 (en) | Oxidation catalyst monitoring | |
US8769937B2 (en) | Soot sensor monitoring | |
US9476341B2 (en) | Exhaust treatment system that generates debounce duration for NOx sensor offset | |
US8745970B2 (en) | Ammonia slip catalyst diagnostic methods and systems | |
US8607625B2 (en) | Service test for exhaust gas treatment system | |
US9194268B2 (en) | Exhaust gas treatment system including an enhanced SCR diagnostic unit | |
US9169766B2 (en) | System to monitor regeneration frequency of particulate filter | |
US9328645B2 (en) | Detecting over-temperature in exhaust system | |
US9879587B2 (en) | Diagnosing oxidation catalyst device with hydrocarbon storage | |
US9581099B1 (en) | Method for diagnosing SCR catalyst and feed gas quality in a diesel after-treatment system | |
US9206727B2 (en) | Regeneration diagnostic methods and systems | |
US9050561B1 (en) | Reductant quality system including rationality diagnostic | |
US20150273395A1 (en) | Reductant quality and scr adaption control system | |
US9528422B2 (en) | Particulate filter washcoat diagnosis based on exothermic substrate temperature | |
US9114344B2 (en) | Particulate filter regeneration management | |
US8978357B2 (en) | System and method for determining an exhaust system condition | |
US8617495B1 (en) | Exhaust gas aftertreatment desulfurization control | |
US9797286B2 (en) | SCR filter washcoat thickness efficiency compensation system | |
US9206719B2 (en) | Enhanced CRT enablement based on soot mass stored in particulate filter | |
US9080494B2 (en) | Particulate filter monitoring methods and systems | |
US8538661B2 (en) | Exhaust treatment methods and systems | |
US20130086886A1 (en) | Electrically heated oxidation catalyst particulate matter protection | |
US8959898B2 (en) | Regeneration methods and systems for particulate filters | |
US9328639B2 (en) | Regeneration system to regenerate a particulate filter based on code clear diagnostic signal |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JACKSON, KARI;LAROSE, THOMAS, JR.;FUNK, SARAH;AND OTHERS;SIGNING DATES FROM 20120418 TO 20120419;REEL/FRAME:028125/0864 |
|
AS | Assignment |
Owner name: WILMINGTON TRUST COMPANY, DELAWARE Free format text: SECURITY AGREEMENT;ASSIGNOR:GM GLOBAL TECHNOLOGY OPERATIONS LLC;REEL/FRAME:030694/0500 Effective date: 20101027 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |