Patent ID: 6240907
Filing Date: 2001-06-05
Classification: F02M,F16K

Abstract:
A control valve for fuel return in an injection line in an internal combustion engine having a valve tappet arranged in a longitudinally displaceable manner and which exposes larger valve cross sections as an opening valve stroke increases and wherein the tappet can be actuated against a restoring force of a valve spring by an electric magnet coil, a spring assembly for the variable setting of the valve cross section, comprising at least two actuating springs which can be deflected in an axial direction of the valve tappet and which are arranged in parallel such that they can be subjected to force in an axially offset manner, and wherein the actuating travel of the valve tappet is limited by an axially displaceable stop which is in operative connection with a second actuating drive and, in a direction opposed to the actuating drive in the axial direction, with the spring assembly.