No.1001E 2006First Edition Calculation of Theoretical Torque and Displacement in an Internal Gear Pump |
| Category | TECHNICAL REPORT |
|---|---|
| Author | Y. INAGUMA Engineering Department, Driveline System Operations Headquarters, PhD |
| Abstract | This paper describes numerical determination of theoretical torque (ideal torque) and theoretical stroke volume (pump displacement) in an internal gear pump without crescent. The design analyzed has been commonly used for an automatic transmission and continuously variable transmission in vehicles because of its high mechanical efficiency. For estimating the pump efficiencies accurately, determining the accurate theoretical torque and theoretical displacement of the pump is important. This paper presents a calculation method that takes into consideration the contact points for meshing and sealing between the driving and driven gear for the accurate theoretical torque and displacement of an internal gear pump without crescent such as a gerotor pump. |
| Keyword | hydraulic power system, hydraulic pump, internal gear pump, theoretical torque, theoretical displacement, calculation method |
| Reference | N. EMOTO, A. ITO : CVT Oil Pump with High Efficiency, Toyoda Koki Technical Review, Vol.45, No.3 (2005) 43.(in Japanese)
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