System for controlling the air-fuel ratio supplied to a supercha

Details System for controlling the air-fuel ratio supplied to a supercha System for controlling the air-fuel ratio supplied to a supercha

1984-02-10

1985-12-17

Koczo, Michael

Internal-combustion engines

Charge forming device

Supercharger

123437, 261DIG51, F02M 712

Patent

active

045586802

ABSTRACT:
A system for controlling the air-fuel ratio for an engine comprises a first passage for communicating a portion adjacent to an inlet of an air bleed of a carburetor of the engine with a portion of the intake passage between an air-cleaner and a supercharger, a valve provided in the first passage, an actuator comprising a diaphragm operatively connected to the valve and first and second chambers defined by the diaphragm. A second passage is provided for communicating the first chamber with the intake passage at the upstream side of the inlet of the air bleed, and a third passage is provided for communicating the second chamber with the intake passage at the downstream side of a throttle valve of the engine. The actuator is so arranged that the valve opens when the difference between pressures in the first and second chambers exceeds a predetermined value, thereby supplying rich air-fuel mixture.

REFERENCES:
patent: 2070009 (1937-02-01), Goodman
patent: 3674245 (1972-07-01), Massarotti
patent: 4142494 (1979-03-01), Negri et al.

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