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    • 4. 发明申请
    • FUEL INJECTION VALVE DEVICE
    • 燃油喷射阀装置
    • US20100282871A1
    • 2010-11-11
    • US12811412
    • 2009-01-28
    • Hiroshi YoshizumiHajime SuzukiMasataka Ota
    • Hiroshi YoshizumiHajime SuzukiMasataka Ota
    • F02M61/10F02M61/18
    • F02M61/14F02M57/06
    • A fuel injection valve can be provided, with which temperature at needle valve seating position can be decreased and carburization of fuel and deposition of the carbide near the needle valve seating position can be prevented resulting in stable normal fuel injection control, and which is applicable to small and middle and also to large engines, particularly gas engines. The fuel injection valve is composed such that distance (A) from a seating face of the nozzle in the nozzle supporting body to a seating position of the needle valve in the nozzle is determined to be smaller than distance (B) from the nozzle seating face in the nozzle supporting body to the lower end of clearance between a nozzle insertion hole of the nozzle supporting body and a fitting part of the nozzle inserted into the nozzle insertion hole, thereby suppressing heat flow to the needle valve seating position.
    • 可以设置燃料喷射阀,可以防止针阀安置位置处的温度,并且可以防止燃料渗碳和碳化氢在针阀座位置附近沉积,从而实现稳定的正常燃油喷射控制,并且适用于 小型和中型,还有大型发动机,特别是燃气发动机。 燃料喷射阀被构成为使得从喷嘴支撑体中的喷嘴的座面到喷嘴中的针阀的就座位置的距离(A)被确定为小于从喷嘴座面 在喷嘴支撑体中,喷嘴支撑体的喷嘴插入孔和插入喷嘴插入孔的喷嘴的嵌合部之间的间隙的下端,从而抑制到针阀的就座位置的热流。
    • 6. 发明授权
    • Fuel injector and diesel engine comprising the same
    • 燃油喷射器和柴油发动机组成
    • US06895937B2
    • 2005-05-24
    • US10607028
    • 2003-06-27
    • Shoji NamekawaHiroshi YoshizumiHiroyuki Ishida
    • Shoji NamekawaHiroshi YoshizumiHiroyuki Ishida
    • F02M45/00F02M45/12F02M63/00F02M63/02F02M37/04
    • F02M63/029F02M45/00F02M45/12F02M63/0007F02M63/0225F02M2200/40
    • A fuel injector can reduce the smoke emissions generated during low load and decrease NOx during high load. The fuel injector comprises a first accumulator for accumulating a pressurized fuel, a second accumulator for accumulating a fuel having a higher pressure than the pressure of the fuel in the first accumulator, fuel injection valves to which the fuel from the first and second accumulators is supplied and thereby the fuel injection valves are opened, and the fuel is injected, fuel feeding pipes for feeding the fuel accumulated in the first and second accumulators to the fuel injection valves; a first valve mechanism which is provided at the fuel feeding pipe and which opens and allows the flow of the fuel in the first accumulator to the fuel injection valves, a second valve mechanism which is provided at the fuel feeding pipe and which opens and allows the flow of the fuel in the second accumulator to the fuel injection valves, and a control device for controlling the first and second valve mechanisms. The first accumulator and the first valve mechanism, and the second accumulator and the second valve mechanism, are provided in parallel to each other to the fuel feeding pipe. In a normal injection mode, the control device makes the first and second valve mechanisms open at the same time. In an injection rate control mode, the control device makes an open timing of the first valve mechanism earlier than an open timing in the normal injection mode.
    • 燃油喷射器可以减少低负荷期间产生的烟雾排放,并在高负荷时减少NOx。 燃料喷射器包括用于累积加压燃料的第一蓄能器,用于累积具有比第一蓄能器中的燃料压力更高的压力的燃料的第二蓄能器,来自第一和第二蓄能器的燃料供应到的燃料喷射阀 从而燃料喷射阀打开,并且喷射燃料;用于将累积在第一和第二蓄能器中的燃料供给到燃料喷射阀的燃料供给管; 第一阀机构,其设置在所述燃料供给管处并且打开并允许所述第一储存器中的燃料流到所述燃料喷射阀;第二阀机构,设置在所述燃料供给管处,并且所述第二阀机构打开并允许 第二蓄能器中的燃料流向燃料喷射阀,以及用于控制第一和第二阀机构的控制装置。 第一蓄能器和第一阀机构以及第二蓄能器和第二阀机构彼此平行地设置到燃料供给管。 在正常喷射模式中,控制装置使第一和第二阀机构同时打开。 在喷射速率控制模式中,控制装置比正常喷射模式中的打开定时更早地使第一阀机构的打开正时。