| 摘要 |
PROBLEM TO BE SOLVED: To reduce collision noise generated by a collision of a suction valve to a stopper by reducing the speed of the opening movement of the suction valve in order to solve problems that the suction valve starts valve closing movement at the start of a suction stroke, and the suction valve collides with the stopper when the valve is fully opened to finish valve opening movement while the collision generates a large sound in an idling state of a vehicle particularly requiring silence.SOLUTION: A solenoid is set off (finish of energizing) in the next suction step by a piston plunger after setting the solenoid on (energizing) during a compression step by the piston plunger of a high-pressure fuel supply pump. A magnetic attraction force by the solenoid energization during the suction step is set so as to be weaker than the spring urging force for opening the suction valve. |
