发明名称 |
INTERNAL COMBUSTION ENGINE DIAGNOSTIC DEVICE AND INTERNAL COMBUSTION ENGINE DIAGNOSTIC METHOD |
摘要 |
An internal combustion engine diagnostic device and an internal combustion engine diagnostic method identify an abnormal cylinder having an abnormal air-fuel ratio among a plurality of cylinders during the operation of an internal combustion engine. The internal combustion engine diagnostic device comprises: an air-fuel ratio control unit for changing the air-fuel ratio in a stepwise manner by controlling a fuel injection amount adjusting means that adjusts the fuel injection amount of each of the plurality of cylinders; and an abnormal cylinder identification unit for identifying an abnormal cylinder on the basis of the relationship between each air-fuel ratio changed in a stepwise manner and the number of misfires occurring in the plurality of cylinders, the number being counted by a misfire counter for each air-fuel ratio changed in a stepwise manner.
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申请公布号 |
US2013158841(A1) |
申请公布日期 |
2013.06.20 |
申请号 |
US201113819347 |
申请日期 |
2011.08.10 |
申请人 |
ITO HIROSHI;ABE TAKAYUKI;KATO MASAHIRO;OHNO TETSUYA;HONDA MOTOR CO., LTD. |
发明人 |
ITO HIROSHI;ABE TAKAYUKI;KATO MASAHIRO;OHNO TETSUYA |
分类号 |
F02D41/22 |
主分类号 |
F02D41/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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