发明名称 |
DIAGNOSTIC SYSTEMS AND METHODS FOR ENGINE KNOCK SENSORS |
摘要 |
An engine control system includes a digital signal processing (DSP) module that generates a fast Fourier transform (FFT) of an engine knock signal generated by an engine knock sensor. An intensity determination module determines an engine knock intensity based on one of a maximum of and an average of the FFT. A status determination module determines a status of the engine knock sensor based on the engine knock intensity, a plurality of predetermined knock intensity thresholds, and a rotational speed of an engine crankshaft.
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申请公布号 |
US2010168991(A1) |
申请公布日期 |
2010.07.01 |
申请号 |
US20090391479 |
申请日期 |
2009.02.24 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
HAMAMA WAJDI B.;SAWDON CRAIG M.;HORNER ROBERT J.;FERCH ERIC;ESFAHAN HAMID M. |
分类号 |
F02D41/04 |
主分类号 |
F02D41/04 |
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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