Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1978-02-14
1979-07-24
Lazarus, Ronald H.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123122H, F02M 3100
Patent
active
041619307
ABSTRACT:
A device for automatically regulating the intake air temperature of a carburetor-equipped internal combustion engine whose air intake system includes a flow proportioning pivotable flapper in a duct junction admitting cold raw air and/or preheated raw air to the air intake filter, depending on the ambient temperature, the flapper position being controlled by a pneumatic membrane actuator receiving negative pressure from the engine intake manifold, via a vacuum line with a thermostat-controlled pressure relief valve which reads the temperature of the raw air mixture. In the cold air intake duct is arranged a temperature-responsive unit, in the form of either a wax thermostat or a bimetallic spiral and disc cam, which serves as a position-adjustable stop thereby preventing the flapper from completely closing the warm air intake duct, when the engine takes in cold air, operating at full load.
REFERENCES:
patent: 3563007 (1971-02-01), Clarke
patent: 3830210 (1974-08-01), Muller
patent: 3850152 (1974-11-01), Hollins
patent: 3888411 (1975-06-01), Floune
patent: 3918421 (1975-11-01), Berry
Bendig Lothar
Fusser Rolf
Filterwerk Mann & Hummel GmbH
Geiger Joseph A.
Lazarus Ronald H.
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