Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1978-11-27
1980-04-15
Lazarus, Ronald H.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123124B, 123119EC, 261 39A, F02M 700
Patent
active
041978234
ABSTRACT:
A supplementary air valve controlling a supplementary air quantity during the warm-up phase of an internal combustion engine. The supplementary valve is arranged in a lateral channel which bypasses the throttle valve and has a flat vane provided with a flow-through aperture; the vane is pivotable about a shaft eccentrically situated with respect to the flow-through aperture by means of a bimetallic spring provided with an electric heating coil energized through the engine ignition switch and which rotates the vane to uncover the cross-sectional areas of two spaced-apart, coaxially arranged air supply tubes which together form a part of the lateral channel and the vane has at least one further flow-through aperture for opening the cross-sectional area of a pressure control line which when closed, permits the induction tube pressure downstream of the throttle valve to prevail in the air control line, and when opened, the induction tube pressure upstream of the throttle valve prevails in the air control line.
REFERENCES:
patent: 4136651 (1979-01-01), Hattori
patent: 4148848 (1979-04-01), Ogita
Schelhas Peter
Schwartz Reinhard
Greigg Edwin E.
Lazarus Ronald H.
Robert & Bosch GmbH
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