发明名称 |
An intake air control of an internal combustion engine |
摘要 |
<p>The present invention provides an intake air control capable of implementing a highly accurate constant negative pressure control with a smaller number of process steps under various environments. The intake air control is applicable to an engine having a variable valve actuation mechanism for adjusting at least a lift amount of an intake valve to control an intake air amount and a throttle valve for keeping a gauge pressure in an intake manifold at a desired gauge pressure. A reference throttle opening area is determined by referring to a first table based on a desired intake air amount. The first table defines a relation between an intake air amount and a throttle opening area under a reference gauge pressure, a reference atmospheric pressure and a reference intake air temperature. A throttle opening area for achieving the desired gauge pressure is determined by correcting the reference throttle opening area with a correction parameter derived based on the Bernoulli's law by using the desired gauge pressure, a current atmospheric pressure and a current intake air temperature.</p> |
申请公布号 |
EP1947314(A1) |
申请公布日期 |
2008.07.23 |
申请号 |
EP20080000176 |
申请日期 |
2008.01.07 |
申请人 |
HONDA MOTOR CO., LTD. |
发明人 |
TAKAMIYA, HIDEHARU;KOMORIYA, ISAO |
分类号 |
F02D11/10;F02D9/02;F02D41/00;F02D45/00 |
主分类号 |
F02D11/10 |
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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