发明名称 |
Apparatus of diagnosing an internal combustion engine and a method of diagnosing of an internal combustion engine |
摘要 |
By employing command value signals for controlling the opening timing of an exhaust valve or an intake valve and means for measuring flow rates of an intake air of a flow direction which flows through an intake manifold of an internal combustion engine, an air flow rate corresponding to the command value signal is measured. A valve mechanism includes the intake valve and the exhaust valve for each cylinder of the internal combustion engine and is controlled by a valve control means for controlling the valve mechanism. A failure diagnosis of an operating status of the valve mechanism can be performed.
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申请公布号 |
US6457353(B1) |
申请公布日期 |
2002.10.01 |
申请号 |
US20000480693 |
申请日期 |
2000.01.11 |
申请人 |
HITACHI, LTD. |
发明人 |
KANKE ATSUSHI;OHSUGA MINORU;OHTA KENJI |
分类号 |
F02D45/00;F01L9/04;F02D13/02;F02D41/00;F02D41/18;F02D41/22;(IPC1-7):G01L3/26;G01M19/00 |
主分类号 |
F02D45/00 |
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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