Patent ID: 9366357
Filing Date: 2016-06-14
CPC Classification: F02M,F16K,Y02T

Claim Text:
1. An electromagnetic valve for a tank valve of a fuel supply system of a gas fuel motor vehicle, comprising: a magnetic coil with an inner guide; a magnetic armature which can move axially in the inner guide, wherein the magnetic armature consists of an armature, a seal element which is arranged between the armature and a fuel inlet, and a moveable counter pole which abuts the seal element; wherein the seal element, the armature and the moveable counter pole are guided through the inner guide of the magnetic coil; wherein the seal element has a support that supports the counter pole on the seal element and the armature has grooves for accommodating the support such that the counter pole abuts the support; wherein the magnetic coil and the magnetic armature are arranged in such a manner that, when the magnetic coil is activated, a pilot opening for a high-pressure fuel is opened by means of the armature sliding in the direction of the moveable counter pole and by means of the armature being released from the seal element so that the high-pressure fuel from the region of the moveable counter pole flows into the gas inlet via the pilot opening; and wherein subsequently a primary opening for the high-pressure fuel is opened by means of the magnetic armature sliding in the direction of a closure plate of the magnetic coil and by means of the seal element releasing from the fuel inlet due to a pressure difference created as a result of the flow of the high-pressure fuel from the region of the moveable counter pole.