发明授权
- 专利标题： Variable valve apparatus of internal combustion engine and method of varying the open-close characteristic of an engine valve
- 专利标题（中）： 内燃机的可变阀装置和改变发动机气门的开闭特性的方法
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申请号： US09634882申请日： 2000-08-07
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公开(公告)号： US06415753B1公开(公告)日： 2002-07-09
- 发明人: Hideo Nagaosa , Yoshihiko Masuda , Yoshihito Moriya , Shuuji Nakano , Shinichiro Kikuoka
- 申请人： Hideo Nagaosa , Yoshihiko Masuda , Yoshihito Moriya , Shuuji Nakano , Shinichiro Kikuoka
- 优先权： JP11-237511 19990824
- 主分类号： F01L134
- IPC分类号： F01L134
摘要：
A variable valve apparatus of an internal combustion engine is capable of realizing more precise valve characteristic control by reducing the error in-detection of the amount of movement of a camshaft caused by a difference in the rate of thermal expansion. The variable valve apparatus has a camshaft that is supported so as to be rotatable and slidable in a direction of an axis thereof and that has three-dimensional cams whose cam profile continuously changes in the direction of the axis. The apparatus also has an actuator for moving the camshaft in the direction of its axis. The apparatus further has a camshaft position sensor provided in a cylinder head, a detected portion provided in the camshaft, and a camshaft movement amount detection portion for detecting the amount of movement of the camshaft in the direction of the axis. The camshaft movement amount detection portion is provided near a camshaft reference position.
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