FUEL INJECTOR FOR DIESEL ENGINE,申请号JP19840249930-传众专利搜索

FUEL INJECTOR FOR DIESEL ENGINE

申请公布号：JPS61129459(A)

申请号：JP19840249930

申请日期：1984.11.27

申请公布日期：1986.06.17

申请人：

MAZDA MOTOR CORP

发明人：YAMAUCHI HIROBUMI;NISHIDA TAKUMI;SAWARA MASANORI;HOTSUTA YOSHIO

分类号：F02M45/00;F02B3/06;F02D41/40;F02M47/00;F02M61/10

主分类号：F02M45/00

摘要：PURPOSE:To reduce the idle vibration by installing a lift-amount control mechanism which is controlled according to the engine operation state and forms the throttle range in which a needle valve throttles an injection hole is formed by suppressing the lift amount of a needle valve. CONSTITUTION:When the fuel introduced from a fuel introducing port 3 acts onto the pressure receiving part 10b of a needle valve 10 fitted in slidable ways onto a nozzle body 4 from a fuel passage 9, and lift-shifts the pressure receiving part, a fuel injection nozzle 1 jets-out fuel from an injection hole 2 opened at the same time. In this case, a left-amount control mechanism 15 for suppressing the lift amount of the needle valve 10 by adjusting the pressure acting onto the terminal edge surface of the plunger part 12b of a plunger member 12 installed coaxially with the needle valve 10 is installed. In other words, the leak through the leak passage 18 of a cylinder 5 is varied by opening/closing-controlling a pressure control valve 19 by a control means 24 on the basis of the engine operation state, and the pressure acting onto the plunger member 12 is varied.