Controller and control method for engine ignition timing
First Claim
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1. An ignition controller for an engine, comprising:
- a spark plug, anda control circuit functioning to;
set a basic ignition timing of the spark plug;
calculate a target torque as a proportion PI relative to a torque generated by the engine at the basic ignition timing;
calculate an ignition timing correction amount based on said proportion PI;
calculate a corrected ignition timing by applying said ignition timing correction amount to said basic ignition timing; and
fire said spark plug in synchronism with said corrected ignition timing.
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Abstract
A target torque is calculated as a proportion PI relative to a torque generated by an engine at a basic ignition timing. An ignition timing correction amount is calculated based on this proportion PI, and by correcting the ignition timing by this correction amount, an ignition timing correction which precisely matches a torque-down request is performed rapidly and accurately.
61 Citations
21 Claims
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1. An ignition controller for an engine, comprising:
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a spark plug, and a control circuit functioning to; set a basic ignition timing of the spark plug; calculate a target torque as a proportion PI relative to a torque generated by the engine at the basic ignition timing; calculate an ignition timing correction amount based on said proportion PI; calculate a corrected ignition timing by applying said ignition timing correction amount to said basic ignition timing; and fire said spark plug in synchronism with said corrected ignition timing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An ignition controller for an engine, comprising:
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a spark plug, means for setting a basic ignition timing of the spark plug, means for calculating a target torque as a proportion PI relative to a torque generated by the engine at the basic ignition timing, means for calculating an ignition timing correction amount based on said proportion PI, means for calculating a corrected ignition timing by applying said ignition timing correction amount to said basic ignition timing, and means for firing said spark plug in synchronism with said corrected ignition timing.
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Specification