Anti-after burn system for internal combustion engine

Details Anti-after burn system for internal combustion engine Anti-after burn system for internal combustion engine

1979-08-08

1981-04-14

Lazarus, Ronald H.

Internal-combustion engines

Charge forming device

Auxiliary air or oxygen added to combustible mixture

261 63, F02M 2304

Patent

active

042613175

ABSTRACT:
An anti-after burn system for an internal combustion engine has an air passage for feeding an additional air into the engine intake manifold and a valve member disposed in the air passage for the control of the supply of the additional air to the engine. The valve member is actuated by a valve actuator having a diaphragm disposed between two vacuum chambers one of which is pneumatically connected to the intake manifold and the other is communicated with the one chamber through a restricted orifice formed in the diaphragm. When the difference in pressure between the vacuum chambers exceeds a predetermined value, the valve member is opened to allow air to flow into the intake manifold for a time period. The two vacuum chambers are also pneumatically connected by a vacuum passage in which a relief valve is provided and is opened when the difference in pressure between the two chambers exceeds a second predetermined value greater than the first-mentioned predetermined value, to thereby promptly decrease the pressure difference to the first predetermined value and thus promptly interrupt the air supply into the engine.

REFERENCES:
patent: 2969800 (1961-01-01), Skiruin
patent: 4195602 (1980-04-01), Yamashuta
patent: 4196709 (1980-04-01), Toryu

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