| 摘要 |
A fuel injector includes a magnetic coil, which cooperates with an armature acted upon by a restoring spring, the armature forming an axially movable valve part together with a valve needle. A valve-closure member which forms a sealing seat with a valve-seat member is provided at the valve needle. Furthermore, the fuel injector includes an inner pole and an outer pole which form a magnetic circuit with the magnetic coil. The restoring spring is acted upon by a guide sleeve so that its axial length during operation of the fuel injector is smaller than the axial length of a bore of the inner pole. |
