Carburetor arranged for recirculating exhaust gases

Details Carburetor arranged for recirculating exhaust gases Carburetor arranged for recirculating exhaust gases

1975-05-19

1977-02-01

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

040056929

ABSTRACT:
In a carburetor, a branch passage is connected to the fuel-air mixture passage for charging exhaust gases back into the fuel-air mixture. A control valve is positioned in the branch passage for regulating flow of the exhaust gases and a first spring biases the control valve into the closed position. A throttle valve in the fuel-air mixture passage is operatively coupled to the control valve by a linkage arrangement so that the two valves can be operated together. The linkage arrangement includes a second spring which permits movement of the throttle valve without corresponding movement of the control valve. Further, the linking arrangement provides a certain amount of play between the movement of the throttle valve and the control valve so that the operation of the control valve can be delayed relative to the opening movement of the throttle valve.

REFERENCES:
patent: 3457906 (1969-07-01), Daigh
patent: 3465736 (1969-09-01), Daigh et al.
patent: 3513816 (1970-05-01), Daigh
patent: 3766896 (1973-10-01), Buehler

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