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US 5,884,605 AGranted
Controller and control method for engine ignition timing
AssigneeNissan Motor Co., Ltd.
InventorsHatsuo Nagaishi, Yoshiaki Yoshioka, Kazushige Yokota
Life of this patent
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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.
Claims21
An ignition controller for an engine, comprising:
- 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.
5 more elements
An ignition controller for an engine, comprising:
- 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.
3 more elements
Dependencies are inferred from the claim text.