发明名称 |
Fail-safe control apparatus for internal combustion engine equipped with variable valve characteristic mechanism and method thereof |
摘要 |
When it is detected that any one of a plurality of variable valve characteristic mechanisms disposed for every cylinder groups is failed, an effective opening degree (valve lift amount, valve operating angle or the like) in a valve characteristic in the failed state, is obtained. When the effective opening degree is judged to be a predetermined value or above, the valve characteristic of the normal variable valve characteristic mechanism is controlled to be coincident with the valve characteristic in the failed state. When the effective opening degree is judged to be less than the predetermined value, there is performed a control for limiting the control to coincide the valve characteristic of the normal variable valve characteristic mechanism with the valve characteristic in the failed state.
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申请公布号 |
US2004261738(A1) |
申请公布日期 |
2004.12.30 |
申请号 |
US20040872529 |
申请日期 |
2004.06.22 |
申请人 |
HITACHI UNISIA AUTOMOTIVE, LTD. |
发明人 |
MACHIDA KENICHI;SHIMIZU HIROKAZU |
分类号 |
F02D13/02;F01L13/00;F02D41/22;(IPC1-7):F01L1/34 |
主分类号 |
F02D13/02 |
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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