| 摘要 |
A fuel injection valve of low collision noise includes a housing (3), a core (4) secured internally of the housing (3), an electromagnetic coil (5) disposed externally around the core (4), a valve body (13) secured to the housing (3), a rod-like valve element (9) disposed reciprocatively movably within the valve body (13), an armature (10) secured to the valve element (9) at one end and attracted to the core (4) upon energization of the electromagnetic coil (5), and a valve seat (11) disposed at one end of the valve body (13) and having a seat portion (11a) and a fuel injection port (11b). A variable gap (A) is formed between an end face of the armature (10) and that of the valve body (13) such that flow path area of the gap (A) diminishes as the valve element (9) moves toward the valve seat (11).
|
