The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 1980
Filed:
Dec. 15, 1978
Siegfried Holzbaur, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel supply system to control an air-fuel mixture for an internal combustion engine which includes an air-flow sensor located in the intake manifold and a manually controlled throttle element. The air-flow sensor includes a rotary element mounted about an axis that extends in the direction of flow, which is moved against a reset force in accordance with the amount of flowing air, so that the air-flow sensor sensor adjusts a fuel supply valve to meter an amount of fuel that corresponds to the amount of air. The rotary element has at least one axial recess which cooperates with a port of the manifold to control an air-flow section and has radial ribs which limit a control chamber having at least one wall securely fixed to the manifold housing, said control chamber being in communication with the intake manifold between the air-flow sensor and the throttle element, while the intake manifold pressure upstream from the air-flow sensor acts upon said ribs. A movable portion of the fuel-metering valve controlled by the air-flow sensor has at least one control slit which opens into a face of the movable portion crosswise to the axis of the air-flow sensor, said control slit arranged to cooperate with at least one control port in a fixed fuel-metering body.