Apparatus for preventing after-burning in internal combustion en

Details Apparatus for preventing after-burning in internal combustion en Apparatus for preventing after-burning in internal combustion en

1975-08-11

1977-04-12

Husar, C. J.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123DIG11, 123 97B, 123119F, F02M 1912

Patent

active

040168522

ABSTRACT:
An apparatus to prevent after-burning, after the ignition key switch is turned off, in an internal combustion engine which is being warmed up, in which condition the choke valve is closed and the throttle valve is opened to a greater extent than during normal idling. The apparatus includes a pressure responsive actuator which, when activated, causes opening of the choke valve and/or closing of the throttle valve. The actuator is controlled by a switching valve which permits the actuator to be interconnected to either the open air or the air intake manifold at a location downstream of the throttle valve. When the igniton key switch is moved into an off or open position, the switching valve connects the actuator to the intake manifold to thereby actuate the actuator so that one or both of the throttle and control valves are appropriately moved.

REFERENCES:
patent: 3517653 (1970-06-01), Ariga et al.
patent: 3741177 (1973-06-01), Schultz
patent: 3741178 (1973-06-01), Cedar
patent: 3744470 (1973-07-01), Clarke et al.
patent: 3744471 (1973-07-01), Brown et al.
patent: 3841281 (1974-10-01), Mick

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