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    • 33. 发明授权
    • Pump device
    • 泵装置
    • US08926299B2
    • 2015-01-06
    • US13426554
    • 2012-03-21
    • Manabu WatanabeJunichi MiyajimaMasato IzutsuTakatoshi Watanabe
    • Manabu WatanabeJunichi MiyajimaMasato IzutsuTakatoshi Watanabe
    • F04C14/18F04C2/14
    • F04C2/14F04C14/185
    • The invention has: a housing; a pump section formed of a drive gear unit and a driven gear unit; a main flow channel through which oil pressure is applied to the driven gear unit in a discharge volume reduction direction; a first branching flow channel through which oil pressure that assists oil pressure from the main flow channel is applied; a second branching flow channel through which oil pressure is applied to the driven gear unit in a discharge increase direction; a first flow channel control section; a second flow channel control section; and a spring that elastically urges the driven gear unit in a discharge increase direction. The first flow channel control section and the second flow channel control section can perform switching control in accordance with each increase or decrease of engine revolutions and in pressure.
    • 本发明具有:房屋; 由驱动齿轮单元和从动齿轮单元形成的泵部; 主流路,通过该主流路沿着排出容积减小方向向从动齿轮单元施加油压; 第一分支流路,其通过辅助来自主流路的油压的油压被施加; 第二分支流路,通过该第二分支流路,在排出增加方向上向从动齿轮单元施加油压; 第一流路控制部; 第二流路控制部; 以及弹簧,其沿着排出增大方向弹性地推动从动减速机。 第一流路控制部和第二流路控制部可以根据发动机转数和压力的每次增减来执行切换控制。