Invention Grant
- Patent Title: Method and apparatus for controlling variable valve actuation device in internal combustion engine
- Patent Title (中): 用于控制内燃机中可变气门致动装置的方法和装置
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Application No.: US11389502Application Date: 2006-03-27
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Publication No.: US07458348B2Publication Date: 2008-12-02
- Inventor: Kenichi Machida , Hidekazu Yoshizawa
- Applicant: Kenichi Machida , Hidekazu Yoshizawa
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2005-090616 20050328; JP2005-090617 20050328
- Main IPC: F01L1/34
- IPC: F01L1/34
Abstract:
In a V-type engine provided with a variable valve timing mechanism and variable valve lift mechanism for an intake valve, a torque difference between respective banks is obtained. In a region in which an opening area of the intake valve is larger than a threshold, valve timing of the intake valve by the variable valve timing mechanism is corrected so as to reduce the torque difference, whereas in a region in which the opening area of the intake valve is smaller than the threshold, lift characteristics of the intake valve by the variable valve lift mechanism is corrected so as to reduce the torque difference.
Public/Granted literature
- US20060219197A1 Method and apparatus for controlling variable valve actuation device in internal combustion engine Public/Granted day:2006-10-05
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