Method and apparatus for limiting the action of a manual choke b

Details Method and apparatus for limiting the action of a manual choke b Method and apparatus for limiting the action of a manual choke b

1979-05-09

1981-02-17

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

F02B 4708

Patent

active

042508479

ABSTRACT:
A method and apparatus for the limitation of the action of a manual choke by the recirculation of exhaust gases to the intake manifold is disclosed. A vacuum valve is located in a conduit connecting the intake and exhaust manifolds. The vacuum valve is activated by a vacuum transmitted through a conduit connected with the carburetor. The conduit is selectively opened by an electrovalve. The electrovalve receives a signal to open the conduit when the manual choke is activated and an engine temperature sensor indicates that the engine temperature has exceeded a predetermined value. A time delay circuit may delay the sending of the signal to the electrovalve.

REFERENCES:
patent: 1558590 (1925-10-01), Carlson
patent: 3512509 (1970-05-01), Daigh

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