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US09410453B2 Method and system for variable cam timing device 有权
可变凸轮定时装置的方法和系统

Method and system for variable cam timing device
摘要：
Methods and systems are described for an engine with a cam torque actuated variable cam timing phaser. Phaser positioning control is improved by reducing inaccuracies resulting from inadvertent spool valve and/or phaser movement when the spool valve is commanded between regions. In addition, improved spool valve mapping is used to render phaser commands more consistent and robust.
摘要（中）：

对具有凸轮扭矩致动可变凸轮定时移相器的发动机描述了方法和系统。 通过减少在区域之间指示滑阀时由于无意的滑阀和/或移相器移动导致的不精确度，可以改善相位器定位控制。 此外，改进的滑阀映射用于使相位器命令更加一致和稳健。

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