Valve having a magnet bag
一种阀针、阀芯的技术,应用在具有磁堆的阀领域,能够解决高成本等问题,达到改善动态性、运动质量优化、高动态性的效果
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[0032] FIG. 1 shows a first embodiment of a valve 2 according to the invention with a two-stage valve stack. Such a valve 2 can be used, for example, as an injection valve in an internal combustion engine. The valve 2 has a valve needle 4 , a first electromagnetic drive 6 and a second electromagnetic drive 8 . The first electromagnetic drive 6 is provided for direct actuation of the valve needle 4 , while the second electromagnetic drive 8 actuates the valve needle via the first electromagnetic drive 6 . The first and second electromagnetic drives 6 , 8 can be moved back into the zero position by means of the main return spring 10 .
[0033] The first electromagnetic drive 6 has a first magnetic circuit 12 , a first coil 14 and a first armature element 16 . The first coil 14 can be energized and used as a magnetic source voltage which flows through the first magnetic circuit 12 . The first magnetic circuit 12 has pole shoes 13 via which the magnetic field can emerge from th...
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