Leakage in Gear Pump (5th Report)

Abstract

The author has made experiment on the gear pump by using precise exprimental apparatus. The volumetric efficiency of the gear pump was proved to be the function of μ N/P (μ=viscosity of the oil, N=number of revolution, P=pressure given to the oil by the gear pump) and coincided with the theoretical value which had been obtained by the author in his 1st Report. The total efficiency was roved also to be the function of μ N/P, excepting the loss due to the packing friction having the maximum value when the best value of side clearances was adopted, which had been obtained by the author in his 3rd Report.