发明名称 |
Engine Control with Valve Operation Monitoring Using Camshaft Position Sensing |
摘要 |
A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include monitoring valve operation by analyzing camshaft position to detect valve operation inconsistent with a current cylinder state (activated or deactivated) and controlling the engine in response to detecting the inconsistent operation. The camshaft position may be used to produce a surrogate signal indicative of intake/exhaust valve lift generated using camshaft sensor tooth deviation relative to an expected or reference tooth position for a corresponding crankshaft position and compared to a corresponding threshold. The surrogate signal indicative of valve lift may also be generated by pattern matching or correlation of one or more reference tooth position patterns to a measured or inferred tooth position pattern.
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申请公布号 |
US2011144883(A1) |
申请公布日期 |
2011.06.16 |
申请号 |
US20100877309 |
申请日期 |
2010.09.08 |
申请人 |
FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
ROLLINGER JOHN ERIC;WADE ROBERT ANDREW;DOERING JEFFREY ALLEN;SZWABOWSKI STEVEN JOSEPH |
分类号 |
F02D28/00 |
主分类号 |
F02D28/00 |
代理机构 |
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地址 |
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