Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1991-12-23
1993-06-08
Dolinar, Andrew M.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123520, F02D 4114, F02M 3304
Patent
active
052169987
ABSTRACT:
An evaporative fuel-purging control system for an internal combustion engine having a canister in which evaporative fuel from a fuel tank is absorped. Purge control valves are arranged between the canister and the intake system of the engine for controlling the flow rate of evaporative fuel supplied from the canister to the intake system. An ECU is responsive to an output from an exhaust gas ingredient concentration sensor arranged in the exhaust system of the engine for calculating an air-fuel ratio correction coefficient, based upon the output from the exhaust gas ingredient concentration sensor and controlling the air-fuel ratio of a mixture supplied to the engine by the use of the air-fuel ratio correction coefficient. The ECU calculates an average value of the air-fuel ratio correction coefficient, and is responsive to the calculated average value for controlling the purge control valves.
REFERENCES:
patent: 4683861 (1987-08-01), Breitkreuz et al.
patent: 4741318 (1988-05-01), Kortge et al.
patent: 5060621 (1991-10-01), Cook et al.
Fujimoto Sachito
Hosoda Fumio
Kitamoto Masakazu
Yamazaki Kazumi
Dolinar Andrew M.
Honda Giken Kogyo K.K.
Lessler Arthur L.
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