Fuel Scavenger Contour Performance Analysis of Fuel Metering Devices

The fuel scavenger contour can affected the dynamic and steady-state characteristics,reflected the valve scavenger ability,decided the characteristics of the valve flow,pressure gain and flow-pressure coefficient.The fuel scavenger theory of equal-area analytics was proposed.The triangle,rectangle,circle shape fuel scavenger characteristics were studied.The relations among the contour and flow,pressure gains,flow and pressure coefficients were discussed.The variation law of the contour characteristics was revealed.