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:
May. 14, 2002
Filed:
Jun. 25, 1999
Applicant:
Inventor:
Juergen Hachtel, Moeckmuehl, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T 8/88 ; B60J 8/32 ;
U.S. Cl.
CPC ...
B60T 8/88 ; B60J 8/32 ;
Abstract
An activation signal of a pump of a braking system is created as a function of a pressure gradient, preferably from a pressure accumulator. In this context, the switched-on time of a pulse-width modulated signal within an activation clock cycle is varied, taking into consideration the accumulator pressure gradient, in order to activate the pump. This is done by addressing a switching arrangement by way of a control unit. Activation as a function of the pressure gradient can be accomplished alternatively to or in combination with activation as a function of the generator voltage of the pump motor.