Purge flow regulator

Details Purge flow regulator Purge flow regulator

1989-06-29

1990-08-28

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123519, 123463, F02M 3900

Patent

active

049516370

ABSTRACT:
Hydrocarbon fuel vapors that are collected in a canister are periodically purged to the intake manifold through a purge valve that comprises a variable orifice valve portion and a flow regulator valve portion in series with each other. The variable orifice portion sets an orifice in inverse proportion to manifold vacuum. The flow regulator portion controls the flow in accordance with a signal from the engine E.C.U.

REFERENCES:
patent: 3752134 (1973-08-01), Hollis
patent: 4700683 (1987-10-01), Uranishi
patent: 4703737 (1987-11-01), Cook
patent: 4741317 (1988-05-01), Yost
patent: 4783962 (1988-11-01), Grein
patent: 4809667 (1989-03-01), Uranishi

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