ABNORMALITY DETERMINATION DEVICE FOR EXHAUST GAS RECIRCULATION DEVICE
PROBLEM TO BE SOLVED: To provide a device capable of accurately determining the abnormality of exhaust gas recirculation (EGR) without depending on an operation state of an internal combustion engine. SOLUTION: This abnormality determination device for the exhaust gas recirculation (EGR) device is p...
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| creator | AKASAKI NAOSUKE ONUMA KENTARO |
| description | PROBLEM TO BE SOLVED: To provide a device capable of accurately determining the abnormality of exhaust gas recirculation (EGR) without depending on an operation state of an internal combustion engine. SOLUTION: This abnormality determination device for the exhaust gas recirculation (EGR) device is provided with a means for detecting an in-cylinder pressure of respective cylinders of the internal combustion engine, a means for detecting a crank angle of the internal combustion engine, a means for calculating the capacity of the cylinder based on the crank angle, a means for estimating a motoring pressure of the internal combustion engine by an arithmetic expression including the capacity of the cylinder, a means for identifying a correction parameter for correcting the cylinder pressure in a compression stroke of the internal combustion engine in order to minimize a deviation between the cylinder pressure and the motoring pressure, and a means for determining the abnormality of the exhaust gas recirculation device by comparing the correction parameter identified in the state where the exhaust gas recirculation device is executed with the correction parameter identified in the state where the exhaust gas recirculation device is not executed. COPYRIGHT: (C)2008,JPO&INPIT |
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SOLUTION: This abnormality determination device for the exhaust gas recirculation (EGR) device is provided with a means for detecting an in-cylinder pressure of respective cylinders of the internal combustion engine, a means for detecting a crank angle of the internal combustion engine, a means for calculating the capacity of the cylinder based on the crank angle, a means for estimating a motoring pressure of the internal combustion engine by an arithmetic expression including the capacity of the cylinder, a means for identifying a correction parameter for correcting the cylinder pressure in a compression stroke of the internal combustion engine in order to minimize a deviation between the cylinder pressure and the motoring pressure, and a means for determining the abnormality of the exhaust gas recirculation device by comparing the correction parameter identified in the state where the exhaust gas recirculation device is executed with the correction parameter identified in the state where the exhaust gas recirculation device is not executed. 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SOLUTION: This abnormality determination device for the exhaust gas recirculation (EGR) device is provided with a means for detecting an in-cylinder pressure of respective cylinders of the internal combustion engine, a means for detecting a crank angle of the internal combustion engine, a means for calculating the capacity of the cylinder based on the crank angle, a means for estimating a motoring pressure of the internal combustion engine by an arithmetic expression including the capacity of the cylinder, a means for identifying a correction parameter for correcting the cylinder pressure in a compression stroke of the internal combustion engine in order to minimize a deviation between the cylinder pressure and the motoring pressure, and a means for determining the abnormality of the exhaust gas recirculation device by comparing the correction parameter identified in the state where the exhaust gas recirculation device is executed with the correction parameter identified in the state where the exhaust gas recirculation device is not executed. 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| subjects | BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS |
| title | ABNORMALITY DETERMINATION DEVICE FOR EXHAUST GAS RECIRCULATION DEVICE |
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