FUEL INJECTION CONTROL DEVICE

• Main Authors: Komoda Takao, Takekawa Shoichiro
• Format: Patent
• Language: English
• 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

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.