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. 25, 2006
Filed:
Sep. 15, 2004
Christian Braeuer, Steyr, AT;
Stefan Holl, Dresden, DE;
Christian Braeuer, Steyr, AT;
Stefan Holl, Dresden, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A pressure regulating valve, for regulating the pressure in a common rail, having a pistonlike valve member guided axially displaceably in a bore, which valve member acts on a closing element which can be pressed against a valve seat, and the valve member forms an armature of an electromagnet that can be supplied with current. The armature of the electromagnet is embodied as a permanent magnet, or the electromagnet surrounding the armature is connected to a permanent magnet likewise acting on the armature, so that even in the state without current, a magnetic force acts on the valve member. In this way, even in the event of a failure of the electromagnetic regulation, a pressure is generated at the valve outlet. In the state when current is supplied, the closing force of the valve can be regulated over the entire pressure range.