GEAR PUMP INTENDED, IN PARTICULAR, AS A HIGH PRESSURE FUEL PUMP
    1.
    发明申请
    GEAR PUMP INTENDED, IN PARTICULAR, AS A HIGH PRESSURE FUEL PUMP 审中-公开
    特别是作为高压燃油泵的齿轮泵

    公开(公告)号:US20170044986A1

    公开(公告)日:2017-02-16

    申请号:US15304212

    申请日:2015-04-14

    Applicant: SNECMA

    Abstract: A geared fuel pump (4′) operates to supply a determined flow but at low or zero pressure rise. It is planned to add gland packing (46) between support bearings (19) of the pinions (11), or between some of them, to provide hydrodynamic lift for these bearings, by delimiting a closed cavity (47) to provide lift by a fluid with better viscosity properties instead of using the fluid itself that is pumped. Possible application to fuel pumps for aircraft engines, in which the pump (4′) is a high pressure pump associated with a low pressure pump.

    Abstract translation: 齿轮燃料泵(4')用于提供确定的流量,但是在低或零压力升高。 计划在小齿轮(11)的支撑轴承(19)之间或其中一些支撑轴承(19)之间增加压盖(46),以便为这些轴承提供流体动力提升,通过限定一个闭合腔(47),以提供一个 流体具有更好的粘度特性,而不是使用被泵送的流体本身。 可能应用于用于飞机发动机的燃料泵,其中泵(4')是与低压泵相关联的高压泵。

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