公开(公告)号：US08714123B2

公开(公告)日：2014-05-06

申请号：US13353078

申请日：2012-01-18

申请人： John Eric Rollinger ,  Mohammad Farid ,  David Karl Bidner

发明人： John Eric Rollinger ,  Mohammad Farid ,  David Karl Bidner

IPC分类号： F01L1/34 ,  G06F17/00

CPC分类号： F01L1/3442 ,  F01L2001/34423 ,  F01L2001/34453

摘要： Systems and methods for modifying oil pressure for a variable cam timing system are provided. In one example approach, a method comprises, in response to an operating condition, adjusting a valve coupled to a hydraulic variable camshaft timing actuator to initiate camshaft phasing and adjusting an oil pressure supplied to the valve based on a camshaft phaser position. If a camshaft phaser locking pin is in a home position, the method may further comprise reducing the oil pressure supplied to the valve for a predetermined time interval to a threshold amount to unlock the locking pin but not move the camshaft phaser and then increasing the oil pressure supplied to the valve to move the camshaft phaser.

摘要翻译： 提供了用于改变可变凸轮定时系统的油压的系统和方法。 在一个示例性方法中，一种方法包括响应于操作条件调节联接到液压可变凸轮轴正时致动器的阀，以启动凸轮轴定相并且基于凸轮轴相位器位置调节供应到阀的油压。 如果凸轮轴相位器锁定销处于原始位置，则该方法还可以包括将提供给阀的油压预定时间间隔减小至阈值量以解锁锁定销，但不移动凸轮轴相位器，然后增加油 提供给阀门的压力来移动凸轮轴相位器。

公开(公告)号：US20130180480A1

公开(公告)日：2013-07-18

申请号：US13353078

申请日：2012-01-18

申请人： John Eric Rollinger ,  Mohammad Farid ,  David Karl Bidner

发明人： John Eric Rollinger ,  Mohammad Farid ,  David Karl Bidner

IPC分类号： F01L1/344

CPC分类号： F01L1/3442 ,  F01L2001/34423 ,  F01L2001/34453

摘要： Systems and methods for modifying oil pressure for a variable cam timing system are provided. In one example approach, a method comprises, in response to an operating condition, adjusting a valve coupled to a hydraulic variable camshaft timing actuator to initiate camshaft phasing and adjusting an oil pressure supplied to the valve based on a camshaft phaser position. If a camshaft phaser locking pin is in a home position, the method may further comprise reducing the oil pressure supplied to the valve for a predetermined time interval to a threshold amount to unlock the locking pin but not move the camshaft phaser and then increasing the oil pressure supplied to the valve to move the camshaft phaser.

摘要翻译： 提供了用于改变可变凸轮定时系统的油压的系统和方法。 在一个示例性方法中，一种方法包括响应于操作条件调节联接到液压可变凸轮轴正时致动器的阀，以启动凸轮轴定相并且基于凸轮轴相位器位置调节供应到阀的油压。 如果凸轮轴相位器锁定销处于原始位置，则该方法还可以包括将提供给阀的油压预定时间间隔减小至阈值量以解锁锁定销，但不移动凸轮轴相位器，然后增加油 提供给阀门的压力来移动凸轮轴相位器。