Back to results
US 4,230,083 AGranted
Fuel supply apparatus
AssigneeRobert Bosch GmbH
InventorsWolf Wessel, Konrad Eckert
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeRobert Bosch GmbH
InventorsWolf Wessel, Konrad Eckert
Estimating the term…
A fuel supply apparatus is proposed which serves to control a mixture-compressing, externally ignited internal combustion engine. The fuel supply apparatus includes at least one fuel depositing point in the air intake manifold, within which an air flow rate meter and an arbitrarily actuatable throttle valve are disposed in series and the air flow rate meter is moved against a restoring force in accordance with the air quantity flowing therethrough. The air flow rate meter, which is embodied as a flat rotary element in the shape of a circular sector, more or less widely opens an aperture which defines the cross-sectional width of the air intake manifold and is rotatably fixed about a rigid shaft extending in the direction of air flow. The intake manifold pressure upstream of the air flow rate meter acts on one side of the air flow rate meter, and the intake manifold pressure downstream of the air flow rate meter acts on the other side of the air flow rate meter. In a plane downstream of the air flow rate meter which is parallel to the aperture, there is an arbitrarily actuatable lobed element, by means of which the flow-through cross-sectional area at the aperture can be varied in accordance with the operating characteristics of the internal combustion engine.
A fuel supply apparatus for mixture-compressing, externally ignited internal combustion engines having a housing, an air intake manifold with at least one fuel depositing point in said air intake manifold, an air flow rate meter and an arbitrarily actuatable throttle valve disposed in series in said air intake manifold and said air flow rate meter is moved against a restoring force in accordance with the quantity of air flowing therethrough, further wherein said housing includes an aperture which leads to said air intake manifold, said air flow rate meter being embodied as a relatively flat rotary member in the form of a circular sector that is arranged to variably open said aperture and swing laterally out of the cross-section of said air intake manifold in an opening motion, a shaft in said housing extending parallel to the direction of air flow in said air intake manifold and being disposed outside of the cross-section of said air intake manifold, said rotary member being fixed on said shaft for rotation transversely with respect to the flow of air in said air intake manifold and subjected on one side to the intake manifold pressure upstream and on the other side thereof to the intake manifold pressure downstream of said air flow rate meter.
Dependencies are inferred from the claim text.