Heat control valve

Details Heat control valve Heat control valve

1978-12-21

1980-06-03

Lazarus, Ronald H.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

251305, 251306, 123122AB, 123122H, F02M 3100

Patent

active

042056462

ABSTRACT:
A seal construction for a heat control valve in a system for heating a fuel-air mixture in the intake manifold of an internal combustion engine by transfer of heat from exhaust gas flowing through a heating chamber defined in a portion of an exhaust manifold. The heating chamber is defined by a top wall, a bottom wall and two pairs of opposite sidewalls and the top wall is situated between the intake and exhaust manifolds. The heat control valve is made of a flat plate and fixed to a valve shaft rotatably supported by a pair of sidewalls across the heating chamber to swing therein. The side edges and the bottom edge of the heat control valve is brought into overlapping contact with the shoulders around concavities formed on the pair of sidewalls and the bottom wall of the heating chamber to stop swinging of the heat control valve over its fully closed position. Therefore, exhaust gas is sealed at the shoulders when the heat control valve is fully closed and flows only along the top wall of the exhaust manifold to effectively heat the fuel-air mixture in the intake manifold.

REFERENCES:
patent: 3070347 (1962-12-01), Ball
patent: 3853104 (1974-12-01), Namby
patent: 3941106 (1976-03-01), Kobayashi
patent: 3970062 (1976-07-01), Nakada

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