Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-09-23
1978-09-12
Nilson, Robert G.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
F02M 718
Patent
active
041129008
ABSTRACT:
A fuel injection system for externally ignited internal combustion engines in which a fuel metering and distributing valve is controlled by an air sensing element disposed in the air suction tube of the engine and by structure which is adapted to alter the restoring force exerted on the air sensing element through the fuel metering and distributing valve. The noted structure includes a control pressure conduit, a pressure control valve connected to the control pressure conduit, a second conduit for connecting the pressure control valve to the suction tube of the engine downstream of the butterfly valve, and a third conduit for connecting the pressure control valve to the atmosphere or to the air suction tube downstream from an air filter. With this structure it is possible to alter the restoring force mentioned above so that an enriched fuel-air mixture is achieved when the butterfly valve is opened to its full load position, and so that a leaner fuel-air mixture is achieved when the butterfly valve is closed to a partial load position.
REFERENCES:
patent: 3791359 (1974-02-01), Eckert
patent: 3835828 (1974-09-01), Knapp
patent: 3983856 (1976-10-01), Stumpp
Knapp Heinrich
Peters Klaus-Jurgen
Riel Klaus
Schwartz Reinhard
Greigg Edwin E.
Nilson Robert G.
Robert & Bosch GmbH
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