EVAP system-provided throttle valve control unit

Details EVAP system-provided throttle valve control unit EVAP system-provided throttle valve control unit

1976-01-26

1977-11-22

Schwadron, Martin P.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123 97B, 60278, F02M 5900

Patent

active

040590810

ABSTRACT:
An EVAP system-provided throttle valve control unit comprising a pressure-operative throttle positioner for opening and closing a throttle valve, said positioner being always connected to an intake pipe or an intake manifold, a pressure control valve device arranged to open and close according to the discharge pressure of an air pump for the re-combustion of exhaust gas, said positioner being connected to a purge hose from a charcoal canister through said device, and a fuel evaporative emission control system arranged so that when the discharge pressure of said air pump is lower than a prescribed value, said device is opened to connect the positioner to the pressure in said purge hose.

REFERENCES:
patent: 3523418 (1970-08-01), Marsee
patent: 3683597 (1972-08-01), Beveridge et al.
patent: 3690307 (1972-09-01), O'Neill
patent: 3796049 (1974-03-01), Hayashi
patent: 3913545 (1975-10-01), Haase et al.
patent: 3962868 (1976-06-01), Matumoto et al.

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