| 摘要 |
PURPOSE:To permit to control the injecting amount simply and surely with an electric mechanism by a method wherein the injection plunger of the unit injector is provided with a pinion and rack, provided in a linear stepping motor, is engaged with the pinion. CONSTITUTION:When a follower 2 is knocked by a locker arm 5, the injection plunger 3 descends to inject fuel in a pump chamber 7 through a nozzle unit 4. In this case, the conditon of an engine is being operated in a controller 13 at all times by a trigger signal 14 and the output signal of the controller is given to the linear stepping motor 12. When a varying signal is provided to said motor 12, the shaft 19 thereof is displaced into the direction F and the pinion 10 is pivoted through the rack 11. Then, the injection plunger 3 is rotated and the stroke of the injection plunger upon communicating the cut part 8 of the plunger 3 with a feed port 6 is changed. According to this method, the feeding amount of the fuel in the pump chamber 7 may be regulated. |
