Cold start by-pass valve

Details Cold start by-pass valve Cold start by-pass valve

1990-06-18

1991-05-07

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Auxiliary air or oxygen added to combustible mixture

123179G, F02D 900

Patent

active

050127896

ABSTRACT:
A cold start air control device for an internal combustion engine of the type having an air delivery system in which the delivery of air to a vacuum generating manifold is controlled by a throttle valve and a by-pass valve and parallel with the throttle valve includes a casing that defines a passageway in parallel with the throttle valve and the by-pass valve and which has a cross-sectional area greater than that of the by-pass valve so as to offer a less restricted air flow path than that offered by the by-pass valve. The passageway provides communication between the manifold and atmosphere and a valve is disposed within the passageway for opening and closing the passageway in response to the vacuum level generated by the manifold.

REFERENCES:
patent: 4311129 (1982-01-01), Kakizaki et al.
patent: 4364348 (1982-12-01), Itoh et al.
patent: 4519367 (1985-05-01), Nomura
patent: 4716871 (1988-01-01), Sakamoto et al.
patent: 4886035 (1989-12-01), Tomobe et al.

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