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:
Apr. 11, 1978
Filed:
May. 21, 1976
Applicant:
Inventors:
Assignee:
Robert Bosch GmbH, Stuttgart, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417499 ; 1231 / ;
Abstract
A fuel injection pump for internal combustion engines having a pump piston reciprocating in a cylinder to inject fuel from a working chamber into the engine cylinders and in which the termination of each injection is determined by an engine r.p.m. device which opens, or partially opens, a relief bore connected between the working chamber and a pump suction chamber. The outlets of the relief bore located on the surface of the pump piston are so formed so as to cooperate with the r.p.m. responsive device to match the injection requirements of the internal combustion engine. Several embodiments of the formed outlets are disclosed.