Patent ID: 7080818
Filing Date: 2006-07-25
Classification: F02M,G05D

Abstract:
1. In a pressure regulating valve for a common-rail fuel injection system for internal combustion engines for regulating the pressure in the 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, the valve member forming an armature of an electromagnet that can be supplied with current, the improvement wherein the armature ( 5 ) of the electromagnet ( 3 ) is embodied as a permanent magnet, whereby even in the state without current, a magnetic force acts on the valve member ( 6 ), wherein the magnetic force of the permanent magnet is designed such that the permanent magnet generates the closing pressure for the maximum desired pressure in the common rail ( 2 ), whereby supplying current to the electromagnet ( 3 ) is required only for regulating the lower pressures.