Method of controlling air fuel ratio learning for dual injection internal combustion engine in hybrid vehicle
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United States of America Patent
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Aug 23, 2011
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N/A
app pub date -
Dec 18, 2008
filing date -
May 21, 2004
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Abstract
In a hybrid vehicle driven by a dual injection internal combustion engine including an injector for in-cylinder injection and an injector for in-intake air path injection, and assistive dynamic, to control learning of the internal combustion engine's air fuel ratio learning value to learn the engine's air fuel ratio the engine is steadily operated and only any one of the injectors is allowed to inject fuel, while learning of the air fuel ratio is controlled, and after controlling the learning has completed the other injector is alone allowed to inject the fuel, while learning of air fuel ratio is controlled.
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