发明授权
- 专利标题: Closed-loop camshaft phaser control
- 专利标题(中): 闭环凸轮轴相位器控制
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申请号: US41650申请日: 1998-03-13
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公开(公告)号: US5937806A公开(公告)日: 1999-08-17
- 发明人: Bohdan Michael Lyko , Thomas Howard Lichti , Daniel Richard Cuatt , John S. Lylak, Jr. , Ivan Rafael Samalot
- 申请人: Bohdan Michael Lyko , Thomas Howard Lichti , Daniel Richard Cuatt , John S. Lylak, Jr. , Ivan Rafael Samalot
- 申请人地址: MI Detroit
- 专利权人: General Motors Corporation
- 当前专利权人: General Motors Corporation
- 当前专利权人地址: MI Detroit
- 主分类号: F01L1/344
- IPC分类号: F01L1/344 ; F01L1/34
摘要:
Internal combustion engine variable valve timing control with a camshaft phaser for varying rotational phase between a camshaft and a crankshaft in response to a control command determined through a hybrid control strategy without resort to direct temperature measurement. For a range of phase errors requiring high response compensation, a control strategy emphasizing rapid response, such as a bang-bang strategy, is deployed. For a range of phase errors requiring high accuracy compensation, a control strategy emphasizing high precision, such as a proportional-plus-integral strategy, is deployed. The phase error ranges are updated periodically to account for changes in operating conditions. The control command includes an offset which varies in response to a periodically estimated control deadband to affirmatively account for the deadband with each issued control command.
公开/授权文献
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