Internal-combustion engines – Charge forming device – Supercharger
Patent
1988-04-04
1989-10-17
Koczo, Michael
Internal-combustion engines
Charge forming device
Supercharger
60601, 123492, F02D 2302
Patent
active
048739618
ABSTRACT:
An air/fuel control system for a supercharged automotive engine includes a supercharger for supercharging air to be supplied to the engine, a detecting device for detecting a plurality of parameters representative of an engine operating condition, an air/fuel ratio regulating unit for adjusting the air/fuel mixing ratio to an arbitrarily chosen predetermined value, and a control unit for controlling the air/fuel ratio regulating unit. The control unit is designed to cause the air/fuel ratio regulating unit to adjust the air/fuel mixing ratio to a predetermined value higher than the stoichiometric value when the detecting device indicates that the engine is in a normal operating condition while the supercharger is operated, and also to adjust the air/fuel mixing ratio to a predetermined value lower than the stoichiometric value when the detecting device indicates that the engine is under an operating condition in which a relatively high engine power output is required.
REFERENCES:
patent: 2670724 (1954-03-01), Reggio
patent: 3049865 (1962-08-01), Drayer
patent: 3568435 (1971-03-01), May
patent: 4400944 (1983-08-01), Iwamoto et al.
patent: 4561403 (1985-12-01), Oyama et al.
patent: 4633841 (1987-01-01), Matsuura et al.
Koczo Michael
Mazda Motor Corporation
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