Spark timing controller for spark ignited internal combustion engine
AssigneeSanshin Kogyo Kabushiki Kaishi
InventorsItsushi Hirukawa, Kazuya Takeuchi, Nobuki Motoshige
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Abstract
Several embodiments of spark timing control for spark ignited internal combustion engines that improve running under certain adverse conditions. Arrangements are disclosed for reducing the speed of the engine in response to certain abnormal conditions, such as shifting of an associated transmission. The speed is reduced by interrupting the spark of the engine. In accordance with the disclosed embodiments, uneven running and stalling is avoided by advancing the spark if the engine speed falls below a predetermined engine speed.
Claims10
In a spark ignited internal combustion engine, means for firing the spark plug of said engine at a predetermined spark timing in accordance with a first established spark advance curve having a speed range including idle where the spark timing is fixed, and means for firing the spark plug at a point advanced from said fixed spark advance curve in response to the speed of said engine falling below a predetermined speed.
Dependencies are inferred from the claim text.