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:
Dec. 27, 1977
Filed:
Nov. 02, 1976
Siegfried Fehrenbach, Markgroningen, DT;
Alfred Feuerbacher, Schwieberdingen, DT;
Robert Bosch GmbH, Stuttgart, DT;
Abstract
An air valve for a fuel injection system of a mixture-compressing externally ignited internal combustion engine which controlls the air flow in a bypass line associated with the air suction tube, the bypass line bypassing a throttle valve mounted within the suction tube. The air valve includes a membrane which defines a first and second chamber of the valve, the first chamber of which is in communication with atmosphere. The air valve also includes a movable valve component mounted to control the cross-sectional area of the bypass line. The movable valve component is connected to the member by a guide pin, and the movement of the movable valve component is responsive to an arrangement of a guide spring and pressure spring as well as the pressures in the two chambers.