Invention Application
- Patent Title: Variable-valve-actuation apparatus for internal combustion engine
- Patent Title (中): 用于内燃机的可变阀致动装置
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Application No.: US09741068Application Date: 2000-12-21
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Publication No.: US20010003973A1Publication Date: 2001-06-21
- Inventor: Makoto Nakamura , Seinosuke Hara , Keisuke Takeda
- Applicant: UNISIA JECS CORPORATION
- Applicant Address: null
- Assignee: UNISIA JECS CORPORATION
- Current Assignee: UNISIA JECS CORPORATION
- Current Assignee Address: null
- Priority: JP11-362086 19991221
- Main IPC: F01L001/34
- IPC: F01L001/34
Abstract:
A VVA apparatus includes an operating mechanism that changes a valve-lift amount, and a microcomputer-based controller that controls the operating mechanism to change the valve-lift amount in accordance with engine operating conditions. A first portion of the valve-lift amount between a high lift and a low lift is changed continuously, and a second portion of the valve-lift amount between the low lift and zero lift is changed with one of the low lift and zero lift selected.
Public/Granted literature
- US06390041B2 Variable-valve-actuation apparatus for internal combustion engine Public/Granted day:2002-05-21
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