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  2. Gear pump - Wikipedia

    en.wikipedia.org/wiki/Gear_pump

    Some manufacturers produce gear pumps with higher working pressures and speeds but these types of pumps tend to be noisy and special precautions may have to be made. [ 3 ] Suction and pressure ports need to interface where the gears mesh (shown as dim gray lines in the internal pump images).

  3. Gerotor - Wikipedia

    en.wikipedia.org/wiki/Gerotor

    These men were all working to perfect an internal gear mechanism by a one-tooth difference to provide displacement. Myron Hill made his first efforts in 1906, then in 1921, gave his entire time to developing the gerotor.

  4. Oil pump (internal combustion engine) - Wikipedia

    en.wikipedia.org/wiki/Oil_pump_(internal...

    The type of pump used varies. Gear pumps [1] [2] trochoid pumps [3] and vane pumps [a] are all commonly used. Plunger pumps have been used in the past, but these are now only used rarely, for small engines. To avoid the need for priming, the pump is always mounted low-down, either submerged or around the level of the oil in the sump. A short ...

  5. Pump - Wikipedia

    en.wikipedia.org/wiki/Pump

    The feed line of the pump and the internal body surrounding the pumping mechanism must first be filled with the liquid that requires pumping: An operator must introduce liquid into the system to initiate the pumping, known as priming the pump. Loss of prime is usually due to ingestion of air into the pump, or evaporation of the working fluid if ...

  6. Hydraulic pump - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_pump

    Fluid flow in an external gear pump. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy (hydrostatic energy i.e. flow, pressure). Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic. They generate flow with enough power to overcome pressure induced by a ...

  7. Hydraulic motor - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_motor

    Gear motor. A gear motor (external gear) consists of two gears, the driven gear (attached to the output shaft by way of a key, etc.) and the idler gear. High pressure oil is ported into one side of the gears, where it flows around the periphery of the gears, between the gear tips and the wall housings in which it resides, to the outlet port.

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    mail.aol.com/d?reason=invalid_cred

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  9. Marine pump - Wikipedia

    en.wikipedia.org/wiki/Marine_pump

    Gear pumps are positive displacement (or fixed displacement), meaning they pump a constant amount of fluid for each revolution. Some gear pumps are designed to function as either a motor or a pump. The screw pump is a positive-displacement (PD) pump that uses one or several screws to move fluids or solids along the screw(s) axis. In its ...