Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1996-02-23
1997-03-25
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123520, F02D 4114
Patent
active
056134819
ABSTRACT:
A control system for an internal combustion engine includes a canister for adsorbing evaporative fuel generated in the fuel tank, a purging passage extending between the canister and the intake system, for purging evaporative fuel into the intake system, and a purge control valve for controlling a flow rate of evaporative fuel to be supplied to the intake system through the purging passage. Various sensors detect operating conditions of the engine, and an ECU controls the purge control valve according to detected operating conditions. An amount of fuel to be supplied to the engine is feedback-controlled by calculating a feedback control amount, based on an output from an air-fuel ratio sensor arranged in the exhaust system by using a controller of a recurrence formula type, and the amount of fuel to be supplied to the engine is controlled based on the calculated feedback control amount, such that an air-fuel ratio of an air-fuel mixture supplied to the engine is converged to a desired air-fuel ratio. An average value of the feedback control amount is calculated while the purge control valve is open. The purge control valve is controlled based on the calculated average value.
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Akazaki Shusuke
Kitagawa Hiroshi
Maki Hidetaka
Argenbright Tony M.
Honda Giken Kogyo Kabushiki Kaisha
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