发明名称 |
Apparatus and method for measuring intake air flow amount of internal combustion engine |
摘要 |
In an internal combustion engine provided with a variable valve mechanism that varies a valve operating characteristic of an intake valve, the valve operating characteristic of the intake valve is detected, and a flow loss coefficient and an effective opening area of the intake valve are calculated based on the valve operating characteristic, to calculate an intake air flow amount in a cylinder portion based on parameters inclusive of the calculated flow loss coefficient and effective opening area.
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申请公布号 |
US6728627(B2) |
申请公布日期 |
2004.04.27 |
申请号 |
US20020285477 |
申请日期 |
2002.11.01 |
申请人 |
HITACHI UNISIA AUTOMOTIVE, LTD. |
发明人 |
MACHIDA KENICHI |
分类号 |
F01L13/00;F02D13/02;F02D41/00;F02D41/18;F02D41/20;F02D45/00;(IPC1-7):F02D41/02 |
主分类号 |
F01L13/00 |
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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