Internal-combustion engines – Spark ignition timing control – Electronic control
Reexamination Certificate
2007-03-05
2008-11-18
Wolfe, Jr., Willis R. (Department: 3747)
Internal-combustion engines
Spark ignition timing control
Electronic control
C123S406190, C701S102000
Reexamination Certificate
active
07451739
ABSTRACT:
An ignition timing control system for an internal combustion engine, which is capable of reducing the capacity of a memory that stores data used in controlling ignition timing, thereby reducing manufacturing costs. An ignition timing control system that controls ignition timing of an internal combustion engine calculates a maximum torque parameter indicative of a maximum torque that the engine can output when the engine is at the detected rotational speed, according to the detected rotational speed, calculates an output torque parameter indicative of an output torque being output from the engine, calculates a torque ratio as a ratio between the output torque parameter and the maximum torque parameter, and determines the ignition timing according to the engine speed and the torque ratio.
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Kawasumi Ikue
Yasui Yuji
Arent Fox LLP.
Honda Motor Co. Ltd.
Wolfe, Jr. Willis R.
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