Abstract
In this article, the flow rate and leakage of circular arc–involute–circular arc gear pumps were investigated. Models of transverse and radial leakage patterns of the pump were also developed. The ...
Highlights
Gear pumps are widely used in automotive, aerospace, and other fields
A leakage model of a circular arc–involute–circular arc gear pump has been established, and the effect of gear eccentricity on leakage is discussed in this article
The main results obtained in this study are as follows: 1. The effects of eccentricity, rotational speeds, and outlet pressures on leakage have been investigated
Summary
Gear pumps are widely used in automotive, aerospace, and other fields. Gear pump development trends are moving in a number of directions, including highpressure applications, high rotational speed application, and pump miniaturization.[1]. The leakage modes for gear pumps are transverse leakage, radial leakage, and gear mesh leakage.[2] Leakage increases as the outlet pressure increases. Within the literature,[1,3,4,5,6] the leakage of gear pumps with involute tooth profiles has been investigated. As a result of the very small clearance between the tip of each tooth and the chamber, the model of radial leakage of involute gear pump is assumed to occur in planes that are parallel to the tip surface.[7,8] the involute tooth profile exhibits a trap-oil phenomenon. This eccentricity influences leakage and is caused by the variation of the rotor center
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