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    • 8. 发明申请
    • Common Rail High Pressure Pump
    • 共轨高压泵
    • US20110220065A1
    • 2011-09-15
    • US13130231
    • 2009-11-17
    • Carsten Rudolph
    • Carsten Rudolph
    • F02M69/46
    • F04B1/0413F02M59/102F02M59/445F02M63/0265F02M2200/9038F02M2200/9061F02M2200/9092F04B1/0426F04B9/045F05C2203/0808F05C2251/10F05C2253/12
    • A common rail high pressure pump for diesel engines operated using aircraft fuel, has an eccentric ring (2) that is disposed in a pump housing (13), shaped in the form of a polygon and driven by an eccentric shaft (1). The pump has pump pistons (8) that can move over the riding surfaces (4) of the eccentric ring and over the contact surface (5) of a tappet plate (3) in the pump cylinders (7) and that is in operative connection with a seating surface (10) of the tappet plate. A thin diamond-like carbon layer (12) is applied onto the previously ground contact surfaces (5) and riding surfaces (4), whereas the uncoated seating surface (10) is designed as a concave bulge. The eccentric ring (2) and the tappet plate (3) have a pre-determined high degree of hardness. Due to the synergistic effects caused by the material hardness and coating and the concave seating surface, the frictional forces are reduced by many times, and the life of the high pressure pump which operates on aircraft fuel is increased by many times.
    • 用于使用飞行器燃料操作的柴油发动机的共轨高压泵具有设置在泵壳体(13)中的偏心环(2),其形状为多边形并由偏心轴(1)驱动。 泵具有能够在偏心环的行进表面(4)上移动并且在泵缸(7)中的挺杆板(3)的接触表面(5)上并且处于操作连接的泵活塞(8) 具有挺杆板的座面(10)。 将薄的类金刚石碳层(12)施加到预先接地的接触表面(5)和搭接表面(4)上,而未涂覆的座面(10)被设计为凹形凸起。 偏心环(2)和挺板(3)具有预定的高硬度。 由于材料硬度和涂层以及凹座表面的协同效应,摩擦力减少了很多次,并且对飞机燃料运行的高压泵的寿命增加了很多倍。