发明授权
- 专利标题: Variable valve actuating apparatus for internal combustion engine
- 专利标题(中): 内燃机可变气门执行装置
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申请号: US12131460申请日: 2008-06-02
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公开(公告)号: US07793625B2公开(公告)日: 2010-09-14
- 发明人: Makoto Nakamura , Yoshinori Ichinosawa , Tomoya Tsukada , Seinosuke Hara , Tomoyuki Murakami
- 申请人: Makoto Nakamura , Yoshinori Ichinosawa , Tomoya Tsukada , Seinosuke Hara , Tomoyuki Murakami
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Foley & Lardner LLP
- 优先权: JP2007-151076 20070607
- 主分类号: F01L1/34
- IPC分类号: F01L1/34
摘要:
A variable valve actuating apparatus for an internal combustion engine includes an intake valve operating angle varying mechanism, and an intake valve timing varying mechanism. The intake valve timing varying mechanism includes a housing rotating in synchronization with a crankshaft, and a vane member coupled to a drive shaft for intake valve operation, and movably mounted in the housing. The vane member includes a vane defining first and second fluid pressure chambers on first and second opposite sides of the vane. A hydraulic circuit is arranged to rotate the vane member relative to the housing by supply and return of a brake fluid to and from the first and second fluid pressure chambers so as to change the intake valve maximum lift phase. Coil springs are arranged to bias the vane member relative to the housing in a direction to retard the intake valve maximum lift phase.
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