发明授权
- 专利标题: Valve timing control apparatus of 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: US11590880申请日: 2006-11-01
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公开(公告)号: US07444254B2公开(公告)日: 2008-10-28
- 发明人: Tomoya Tsukada , Seiji Suga , Hideaki Nakamura
- 申请人: Tomoya Tsukada , Seiji Suga , Hideaki Nakamura
- 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: JP2005-320247 20051104
- 主分类号: G01L25/00
- IPC分类号: G01L25/00 ; F01L1/34
摘要:
A valve timing control apparatus is adapted to an exhaust valve side of an internal combustion engine. A vane member is arranged to rotate with a camshaft relative to a timing sprocket member. The vane member is rotated at low speed engine operation dominantly by a camshaft-torque actuation mechanism and at high speed engine operation dominantly by a hydraulic actuation mechanism. The camshaft-torque actuation mechanism is actuated by an alternating torque of the camshaft, whereas the hydraulic actuation mechanism is actuated by a fluid pump. The vane member includes a first vane arranged to operate in the camshaft-torque actuation mechanism and a second vane arranged to operate in the hydraulic actuation mechanism. The first vane has a shorter radial length and a smaller pressure-receiving area than the second vane.
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