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  • An Analytical and Experimental Study of a High Pressure Single Piston Pump for Gasoline Direct Injection (GDi) Engine Applications (.pdf)
    and accelerate mixture preparation. The high-pressure fuel pump is an essential component in the GDi system. Therefore, understanding the flow characteristics of this device and its associated behavior is critical for improving the performance of this category of engines.
  • Straight Talk on Wobble-Piston Pumps
    Wobble pumps combine the best features of piston and diaphragm air pumps. Wobble pumps are available in a wide range of sizes. The Model 8003 from Rietschle Thomas weighs less than 7 oz, is rated at 12-psi maximum pressure, and has 0.11-cfm open flow. It is used in industrial gas-detection
  • Low Noise, Increased Reliability, Digital Control: A New Generation of Radial Piston Pumps
    Low noise, greater reliability, easy control options are demands on modern piston pumps. To lower both, the noise emission and the high and low pressure pulsation the number of pistons of a radial piston pump (RKP) is increased from 7 to 9. By means of CFD and FE calculation the suction path
  • A hydraulically powered bike
    and frame elements, together with unorthodox styling. In contrast, a hydraulic transmission retains the standard bike layout. Ohlins engineers chose the Rexroth A2F05 axial-piston pump for its high-efficiency and power-to-weight ratio, says Jansson, and it is suited to the application's speeds
  • Getting to know stepper motors
    in seconds, the microprocessor-controlled linear actuator can dispense medications over long periods of time at precise rates and volumes. And unlike an intravenous feeder that relies on gravity to dispense liquids, the syringe pump controls flow by using pressure. The two major factors, flow rate
  • Compact pumps offer higher flow
    45 pumps leave more room for other system components. The pump's servo pistons are located near the pump controls. This speeds response because it minimizes the flow path for the control oil and produces benefits for load-sense, pressure-compensator, electrohydraulic, and other types of control
  • Accumulators Deliver New Payoffs
    supplies high-pressure fluid that retracts the cylinder rod, but the weight of the piston rod and attached stringer rods pressurizes fluid on the extend stroke, powering a hydraulic motor that drives a pump. Diverting this high-pressure fluid to charge an accumulator lets it supplement pump flow
  • Engineers explore mobile equipment's future
    of the incoming fluid. Rexroth is also working to minimize environmental damage from hydraulic leaks. For instance, its redesigned A15VO piston pump has only one high-pressure seal versus 13 in the previous version. With fuel costs recently at record highs, "energy savings is now a key, decisive sales

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