发明名称 |
KNOCK CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE |
摘要 |
A knock control apparatus for internal combustion engine includes: a knock signal normalization unit that normalizes a knock signal extracted from an output signal of a knock sensor; a knock determination threshold setting unit that sets a knock determination threshold on the basis of the normalized knock signal; a knock intensity computation unit that calculates knock intensity on the basis of the normalized knock signal and the set knock determination threshold; a knock determination unit that determines a presence or absence of a knock on the basis of the calculated knock intensity; and a knock correction amount computation unit that calculates a knock correction amount to correct the calculated knock intensity in a case where an occurrence of a knock is determined. The knock signal normalization unit normalizes a standard deviation of the knock signal by dividing the knock signal by an average value of the knock signal. |
申请公布号 |
US2012080008(A1) |
申请公布日期 |
2012.04.05 |
申请号 |
US201113251939 |
申请日期 |
2011.10.03 |
申请人 |
MATSUSHIMA YUHEI;HAGARI HIDEKI;SAITO TOSHIKATSU;EZUMI KEITARO;KUSUNOKI TOMOKUNI;MAZDA MOTOR CORPORATION;MITSUBISHI ELECTRIC CORPORATION |
发明人 |
MATSUSHIMA YUHEI;HAGARI HIDEKI;SAITO TOSHIKATSU;EZUMI KEITARO;KUSUNOKI TOMOKUNI |
分类号 |
F02M7/00 |
主分类号 |
F02M7/00 |
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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