FUEL INJECTION CONTROL DEVICE

In a fuel injection control device, a learning value compensating for a steady deviation between actual air-fuel ratio and target air-fuel ratio is updated through an air-fuel ratio feedback control during engine operation, and a fuel injection amount is corrected using the learning value. If fuel h...

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Bibliographic Details
Main Authors Komoda Takao, Takekawa Shoichiro
Format Patent
LanguageEnglish
Published 20.10.2016
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
WEAPONS
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Summary:In a fuel injection control device, a learning value compensating for a steady deviation between actual air-fuel ratio and target air-fuel ratio is updated through an air-fuel ratio feedback control during engine operation, and a fuel injection amount is corrected using the learning value. If fuel having been replenished is detected at the time of engine starting, a correction amount is added to the learning value. Here, in a case where the learning value is a value which is included in a predetermined range, the correction amount is set to "0" and engine starting is performed by using the learning value as it is. Meanwhile, in a case where the learning value is a value which is not included in the predetermined range, the learning value is corrected to a value equal to a boundary value of the predetermined range by the correction amount, and engine starting is performed.
Bibliography:Application Number: US201415100359