发明授权
- 专利标题： Valve timing control apparatus for internal combustion engine
- 专利标题（中）： 内燃机气门正时控制装置
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申请号： US10281324申请日： 2002-10-28
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公开(公告)号： US06758176B2公开(公告)日： 2004-07-06
- 发明人: Koji Wada , Tatsuhiko Takahashi
- 申请人： Koji Wada , Tatsuhiko Takahashi
- 优先权： JP2002-120861 20020423
- 主分类号： F01L134
- IPC分类号： F01L134
摘要：
Valve timing control apparatus for engine includes a cam phase actuator (1113) composed of a first rotor (1) rotatable with a crank shaft, a second rotor (6) mounted on a cam shaft (7) and a lock mechanism (15, 16, 18) for locking the second rotor to the first rotor, a pump (1118) for generating a hydraulic pressure, an ECU for computing a current value corresponding to a pressure for clearing a locked state at the first relative angle for shifting the first relative angle to a second angle, and an OCV (1114) for supplying a pressure for regulating a cam phase of the second rotor in dependence on the current value. The ECU computes a first current value for generating a first pressure for releasing the locked state. The first current value is supplied to the OCV for a predetermined time before shifting the first relative angle.