Invention Grant
- Patent Title: Method and apparatus for controlling ignition timing of an internal combustion engine based on engine rotary speed
- Patent Title (中): 基于发动机转速来控制内燃机的点火正时的方法和装置
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Application No.: US12291583Application Date: 2008-11-12
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Publication No.: US07823561B2Publication Date: 2010-11-02
- Inventor: Yoshiya Omuro , Kenichi Machida
- Applicant: Yoshiya Omuro , Kenichi Machida
- Applicant Address: JP Tokyo
- Assignee: Honda Motor Co., Ltd.
- Current Assignee: Honda Motor Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Carrier, Blackman & Associates P.C.
- Agent Joseph P. Carrier; William D. Blackman
- Priority: JP2007-324708 20071217
- Main IPC: F02P5/15
- IPC: F02P5/15

Abstract:
An engine ignition control apparatus includes a standard ignition map for use in retarding ignition timing when a throttle opening is within a predetermined range, and when an engine speed is within a predetermined region; and an acceleration-time advance angle correction quantity map for performing advance angle correction when the engine speed is within the predetermined region; an engine accelerometer for detecting a rate of change of the engine rotary speed; and an acceleration-time advance angle correction quantity setting unit for correcting an advance angle of the ignition timing. When the engine speed is within the predetermined range, and the rate of change of engine rotary speed is greater than or equal a predetermined rate, the acceleration-time advance angle correction quantity setting unit performs attenuation processing for deriving an advance angle correction quantity; and increases an attenuation quantity of the advance angle quantity for every ignition.
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