Device for injecting fuel, has valve needle and valve housing with valve seat, where valve needle closes aperture in valve seat, and valve needle has area with reduced rigidity

摘要

The device (1) has a valve needle (2) and a valve housing (3) with a valve seat (4), where the valve needle closes an aperture (20) in the valve seat. The valve needle has an area (5) with reduced rigidity. The area with reduced rigidity has a construction (6), which is extended on the valve needle. The valve needle is made of a solid material. The valve needle has a needle pin and a ball, which is provided on an end of the needle pin. The area with reduced rigidity is arranged between the ball and the needle pin of the valve needle.