发明名称 |
Method of controlling the spark lead of an internal combustion engine |
摘要 |
A method of controlling the spark lead of an internal combustion engine having at least one cylinder fitted with a spark plug; the method including the steps of: determining a standard spark lead value; determining an engine knock index in the cylinder; calculating a correction factor as a function of the engine knock index; determining a modified spark lead value by applying the correction factor to the standard spark lead value; and controlling the spark plug using the modified spark lead value. The correction factor is calculated by statistically analyzing a number of engine knock indexes to calculate a cumulative distribution; comparing the cumulative distribution with at least one target value; and modifying the current correction factor value as a function of the comparison between the cumulative distribution and the target value. |
申请公布号 |
US8109254(B2) |
申请公布日期 |
2012.02.07 |
申请号 |
US20060158990 |
申请日期 |
2006.12.22 |
申请人 |
PO GIACOMO;CAVINA NICOLO';POGGIO LUCA;FERRARI, S.P.A. |
发明人 |
PO GIACOMO;CAVINA NICOLO';POGGIO LUCA |
分类号 |
F02P5/00 |
主分类号 |
F02P5/00 |
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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