Evapo-control valve

Details Evapo-control valve Evapo-control valve

1992-02-19

1993-01-26

Cross, E. Rollins

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

137587, 137 43, F02M 3302, F16K 2400

Patent

active

051814978

ABSTRACT:
An evapo-control valve, which is disposed in a pipe for connecting a fuel tank and a canister, comprises a fuel tank side connecting port which communicates with the fuel tank, a canister side connecting port which communicates with the canister, an intake manifold side connecting port which communicates with an intake manifold, a closing valve for permitting the canister side connecting port to communicate with the fuel tank side connecting port by the negative pressure in the intake manifold side connecting port during the operation of an engine, and a check valve for permitting the atmosphere in the canister to communicate with the fuel tank when the fuel tank is negatively pressurized due to cold weather during the stop of the engine.

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