Patent ID: 8667986
Filing Date: 2014-03-11
Classification: F02M,F16K,Y10T

Abstract:
1. A pressure-regulating valve for regulating the pressure in a high-pressure fuel accumulator of an internal combustion engine, the pressure-regulator valve comprising a valve piston ( 3 ) which is guided in an axially displaceable manner in a bore ( 1 ), is acted upon in the opening direction by the compressive force of a spring ( 2 ) and, when a magnet coil ( 4 ) is energized, undergoes an axial displacement in the direction of a first valve seat ( 5 ) counter to the compressive force of the spring ( 2 ) and counter to the pressure prevailing in the high-pressure fuel accumulator, wherein the valve piston acts on a valve-sealing element ( 6 ) which interacts with the valve seat ( 5 ), characterized in that, in order to realize emergency running, a second valve seat ( 8 ) formed in a valve plate ( 7 ) is provided, said second valve seat interacting with the valve-sealing element ( 6 ) in such a manner that, when the magnet coil ( 4 ) is not being energized, the pressure prevailing in the high-pressure fuel accumulator keeps the valve-sealing element ( 6 ) in sealing contact with the second valve seat ( 8 ), characterized in that the valve plate ( characterized in that the first valve seat (