发明名称 |
Control apparatus for an internal combustion engine |
摘要 |
A control apparatus for an internal combustion engine can compensate for a variation of intake pressure resulting from various factors whereby a failure detection area can be expanded, and false detection can be prevented to enable failure determination for an EGR system with high reliability. The apparatus determines whether a vehicle is decelerating, forcedly opens and closes an EGR valve, and determines whether an EGR control device is in failure by comparing a pressure change index value based on intake pressures upon the forced opening and closing of the EGR valve with a failure determination value. The apparatus adjusts the intake pressure to a predetermined state before the EGR valve is forcedly opened and closed, whereby a failure determination can be always made based on the intake pressure whose variation was compensated for with the intake pressure becoming a predetermined characteristic to the number of revolutions per minute of the engine.
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申请公布号 |
US7275525(B2) |
申请公布日期 |
2007.10.02 |
申请号 |
US20060367273 |
申请日期 |
2006.03.06 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
MIYASAKO MASAKAZU;WADA KOJI;SUENAGA MOTOYASU |
分类号 |
F02M25/07;F02B47/08;F02D41/04 |
主分类号 |
F02M25/07 |
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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