Proportional valve for controlling hydrogen supply to fuel cell in vehicle, has sealing element exhibiting idle projection based on seat along direction, where idle projection is twice larger than radius and five times larger than radius

摘要

The valve (1) has a nozzle body (2) with a passage aperture (3), and a closing element (4) releasing and closing the passage aperture at a valve seat. A resilient sealing element seals at the valve seat. The valve seat exhibits a radius, and the sealing element exhibits an idle projection based on the valve seat along radial direction. The idle projection is twice larger than the radius and five times larger than the radius. The idle projection exhibits constant width along the valve seat, and is approximately 0.30 mm.