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. 16, 1991
Filed:
Mar. 24, 1989
Applicant:
Inventor:
Rudolf Babitzka, Kirchberg-Neuhof, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123506 ; 123449 ; 123503 ;
Abstract
A hydraulic control device for fuel injection pumps of internal combustion engines, having a control conduit that branches off from a high-pressure chamber, such as a pump work chamber, and acts in a control chamber upon a control face of a stepped piston for hydraulically stepping down the volume, the piston working face having the smaller diameter defining a closed work chamber, which has an outflow controllable by a valve; a functional face on the movable valve element is acted upon from the work chamber and determines the time/cross section control.