Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1996-02-05
1997-05-06
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123698, F02D 4114
Patent
active
056261225
ABSTRACT:
An air-fuel ratio control apparatus for an internal combustion engine includes an operative state detection unit for detecting an operative state of the internal combustion engine, a purge quantity calculation unit for calculating a quantity of purge air and a purge rate calculation unit for calculating a purge rate from the purge air quantity calculated by the purge quantity calculation unit and from the operative state detected by the operative state detection unit. A purge air concentration calculation unit calaulates a purge air concentration from the purge rate and the air-fuel ratio feedback correction coefficient. A purge air concentration correction unit calculates a purge air concentration correction coefficient based on the purge rate and the purge air concentration, and a fuel injection quantity calculation unit calculates an injection quantity of fuel, based on the air-fuel ratio feedback correction coefficient and the purge air concentration correction coefficient.
REFERENCES:
patent: 5216997 (1993-06-01), Osanai et al.
patent: 5544638 (1996-08-01), Yuda
patent: 5546922 (1996-08-01), Hara et al.
Argenbright Tony M.
Mitsubishi Denki & Kabushiki Kaisha
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