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. 10, 1990
Filed:
Jan. 06, 1989
Applicant:
Inventors:
Hans Heim, Stuttgart, DE;
Hermann-Josef Klein, Eberdingen-Hochdorf, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123497 ; 123351 ; 1231 / ;
Abstract
The invention is directed to a control circuit for controlling the speed of an electric fuel pump for an internal combustion engine having fuel injection and includes a speed limit-value comparator for controlling the speed or delivery rate of the fuel pump to a value below the minimum speed or delivery rate for a speed of the engine above a specific predetermined limit speed which is impermissibly high. The minimum speed or minimum delivery rate is then the delivery rate which is required for at least building up the system pressure in the fuel injection system.