| 摘要 |
A high-pressure fuel supply system can reduce collision sounds generated when a plunger collides with a stopper. An electromagnetic valve includes a plunger, a valve seat with which the plunger is moved into and out of contact so that the valve seat is placed into communication with a pressurization chamber when the plunger is moved apart from the valve seat, a stopper for limiting the separation of the plunger from the valve seat, an armature made of a magnetic material and fixedly secured to the plunger, a core arranged in opposition to the armature, a solenoid wound around the core for attracting the armature toward the core through an electromagnetic force when energized, and a spring for urging the plunger toward the valve seat. A groove is formed near opposed surfaces of the armature and core for magnetically saturating a portion of a magnetic circuit generated by energizing the solenoid.
|
