Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1998-08-21
2000-06-27
Kwon, John
Internal-combustion engines
Charge forming device
Fuel injection system
123674, F02M 5100
Patent
active
060793937
ABSTRACT:
A system for controlling fuel vapors of an internal combustion engine having a fuel supply system including a fuel tank for supplying fuel to an air intake system such that an air-fuel mixture flows to a combustion chamber, including a canister purge mechanism for purging the stored fuel vapors into the air intake system of the engine through a purge line. A purged fuel amount supplied to the combustion chamber of the engine is calculated and a fuel injection amount to be supplied to the engine is determined based on the calculated purged fuel amount and a basic fuel inject-on amount. In the system, the purged fuel amount is calculated based on the estimated amount of the fuel vapors in response to a transport delay of the purged fuel vapors. The purged fuel amount is, on the other hand, calculated in response to the air/fuel ratio feedback correction coefficient and a learning control value ratio, thereby enhancing the accuracy in determining the correctional purged fuel amount and accordingly improving the accuracy in correcting the fuel injection amount by the determined correctional purged fuel amount.
REFERENCES:
patent: 5758308 (1998-05-01), Maki et al.
patent: 5896845 (1999-04-01), Matsuda et al.
patent: 5908463 (1999-06-01), Akazaki et al.
patent: 5931143 (1999-08-01), Kitagawa et al.
Tsutsumi Kojiro
Watanabe Katsushi
Honda Giken Kogyo Kabushiki Kaisha
Kwon John
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