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    • 1. 发明授权
    • Using a coated fuel injector and method of making
    • 使用涂覆燃料喷射器和制造方法
    • US5783261A
    • 1998-07-21
    • US678309
    • 1996-07-11
    • Timothy PotterMarcus W. FriedEllsworth Schanergerger
    • Timothy PotterMarcus W. FriedEllsworth Schanergerger
    • C23C14/00C23C16/26C23C16/509F02M51/06F02M51/08F02M61/16C23C14/04
    • F02M51/0671C23C14/0036C23C16/26C23C16/509F02M61/166F02M61/168
    • A method of using an amorphous carbon-based coating to extend the operating life of a fuel injector having a needle operating within a valve body, the valve body, the valve and body having steel surfaces subject to repeated impact and sliding friction contact over the operating life of the injector. The method comprises (a) providing the steel surfaces of at least one of the needle and body with an ion implanted stabilized amorphous carbon-based coating in a thickness of 1-10 micrometers, the coating having low internal stresses and low coefficient of friction independent of humidity and being stabilized by the presence of up to 30% by weight of carbide forming material selected from the group of silicon, titanium and tungsten, and (b) repeatedly and rapidly actuating the fuel injector in time periods of 0.5-1.5 micro-seconds for a single acutations thereby subjecting the valve coated surfaces to substantially continuous sliding contact and needle impact forces of 70,000-200,000 psi, the actuation being carried out in the absence of lubricious fuel at the coated surfaces whereby wear is significantly reduced by atomic transfer of coating atoms to mating surfaces during impact or sliding contact.
    • 一种使用无定形碳基涂层以延长具有在阀体内操作的针的燃料喷射器的使用寿命的方法,所述阀体,所述阀体和所述钢表面具有受到反复冲击和滑动摩擦接触的钢表面的操作 注射器的寿命。 该方法包括(a)将针和体中的至少一个的钢表面提供厚度为1-10微米的离子注入稳定的无定形碳基涂层,该涂层具有低内应力和低摩擦摩擦系数独立 的湿度并通过存在高达30重量%的选自硅,钛和钨的碳化物形成材料而稳定,并且(b)在0.5-1.5微米的时间段内重复且快速地致动燃料喷射器, 秒,从而使阀涂层表面基本上连续滑动接触和70,000-200,000磅/平方英寸的针冲击力,该致动是在涂覆表面处不存在润滑燃料的情况下进行的,由此通过原子转移 在碰撞或滑动接触期间将原子涂覆到配合表面。
    • 2. 发明授权
    • Apparatus and method for controlling the cone angle of an atomized spray
from a low pressure fuel injector
    • 用于从低压燃料喷射器控制雾化喷雾的锥角的装置和方法
    • US5383597A
    • 1995-01-24
    • US102920
    • 1993-08-06
    • Kathirgamasundaram SooriakumarDebojit BaruaMarcus W. Fried
    • Kathirgamasundaram SooriakumarDebojit BaruaMarcus W. Fried
    • B05B1/34F02M61/16F02M61/18F15D1/08F02M63/00
    • B05B1/3405B05B1/34F02M61/162F02M61/18F02M61/1853F15D1/08Y10S239/19
    • A fuel injector for improving the atomization quality of fuel flowing into an internal combustion engine, includes a body having first and second turbulence cavities defined therein. First and second supply orifices in the body are coupled into their corresponding turbulence cavities for guiding the flow of fuel thereinto. First and second metering orifices in the body are coupled from corresponding first and second turbulence cavities for exhausting the atomized fuel therefrom in first and second fuel flows. One rim of each supply orifice is paired with a second rim of an adjacent metering orifice in order to produce a turbulence within the turbulence cavity. The metering orifice rim is spaced downstream by a distance y and laterally offset by a distance x from the supply orifice rim such that x/y is greater than 0.1. The fuel flowing from the first and second metering orifices includes lateral momentum components that cooperate to control the resultant cone angle of the fuel flowing from the injector. A plurality of hillocks are located within the turbulence cavity to enhance atomization. A method of operation for the apparatus is also provided.
    • 一种用于改善流入内燃机的燃料的雾化质量的燃料喷射器,包括其中限定有第一和第二湍流空腔的主体。 主体中的第一和第二供应孔被联接到它们相应的湍流空腔中,以引导其中的燃料流。 主体中的第一和第二计量孔从对应的第一和第二湍流空腔耦合,用于在第一和第二燃料流中排出雾化的燃料。 每个供应孔的一个边缘与相邻计量孔的第二边缘配对,以便在湍流腔内产生湍流。 计量孔口边缘在下游间隔距离y,并横向偏离供应孔边缘的距离x,使得x / y大于0.1。 从第一和第二计量孔流出的燃料包括侧向动量分量,其协作以控制从喷射器流出的燃料的合成锥角。 多个小丘位于湍流腔内以增强雾化。 还提供了该装置的操作方法。