发明申请
US20110144883A1 Engine Control with Valve Operation Monitoring Using Camshaft Position Sensing
有权
发动机控制与阀门操作监控使用凸轮轴位置检测
- 专利标题: Engine Control with Valve Operation Monitoring Using Camshaft Position Sensing
- 专利标题(中): 发动机控制与阀门操作监控使用凸轮轴位置检测
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申请号: US12877309申请日: 2010-09-08
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公开(公告)号: US20110144883A1公开(公告)日: 2011-06-16
- 发明人: John Eric Rollinger , Robert Andrew Wade , Jeffrey Allen Doering , Steven Joseph Szwabowski
- 申请人: John Eric Rollinger , Robert Andrew Wade , Jeffrey Allen Doering , Steven Joseph Szwabowski
- 申请人地址: US MI Dearborn
- 专利权人: FORD GLOBAL TECHNOLOGIES, LLC
- 当前专利权人: FORD GLOBAL TECHNOLOGIES, LLC
- 当前专利权人地址: US MI Dearborn
- 主分类号: F02D28/00
- IPC分类号: F02D28/00
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.