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. 28, 1976
Filed:
Feb. 20, 1975
Wolf Wessel, Schwieberdingen, D;
Wilfried Sautter, Ditzengen, Schockingen, D;
Robert Bosch G.m.b.H., Stuttgart, D;
Abstract
A fuel injection system includes a metering valve assembly whose control slide is actuated by the air flow through the induction tube and by an opposite restoring force provided by fluid pressure. The magnitude of this restoring force may be altered by the action of a pressure control valve. The back pressure downstream of this control valve and downstream of a main fuel system control valve is regulated by a back pressure regulating valve. This valve is responsive to signals related to the atmospheric pressure or to operating parameters of the engine, e.g., the induction manifold pressure and it regulates the back pressure of the fuel to maintain a desired fuel-air ratio.