| 摘要 |
PROBLEM TO BE SOLVED: To increase exhausting performance while suppressing surge from occurring in high load areas. SOLUTION: A calculation means 35 calculate the corrected amount of an air fuel ratio feedbackαbased on the output from a sensor 33 so that an air fuel ratio becomes a theoretical air fuel ratio in high load areas and, based on thisα, an updating means 36 updates a learned value KBLRC2 in high load areas. When the high load areas and a specified period have been passed, a stop means 40 stops calculation ofαand, after the high load areas and a specified period have been passed, a calculation means 37 corrects a basic injection amount using the learned values in high load areas so as to obtain the fuel injection amount. Thus, even when the flow characteristics of those parts related to fuel injection vary in high load areas and those areas other than these areas, the air fuel ratio can be controlled to a theoretical air fuel ratio while suppressing surge from occurring in high load areas.
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