This paper describes a study of the volumetric efficiency of a variable displacement axial piston pump. A theoretical model, based on the continuity equation and properly combined with a simplified analytical treatment of leakage flows, is first presented and used to characterise the stationary behaviour of a 9 piston pump for different operating conditions and different configurations. In this study attention is focused on pump volumetric efficiency dependency on overall operational conditions as supply pressure, pump speed, leakage clearance heights, swash plate angle and port plate timing. Successively, a numerical vs. experimental comparison of steady-state pump characteristics is presented; this last part of the paper has been developed with the aim of showing the validity limits of the assumptions made to build up the numerical model. Results confirm the applicability of the simplified hypotheses introduced and validates the analysis of volumetric efficiency previously performed.

Variable Displacement Axial Piston Pump Volumetric Efficiency Analysis / Cantore, Giuseppe; Borghi, Massimo; Milani, Massimo. - ELETTRONICO. - (1999), pp. 459-469. (Intervento presentato al convegno The sixth Scandinavian international conference on fluid power tenutosi a Tampere, Finland nel 25-28 Maggio 1999).

### Variable Displacement Axial Piston Pump Volumetric Efficiency Analysis

#### Abstract

This paper describes a study of the volumetric efficiency of a variable displacement axial piston pump. A theoretical model, based on the continuity equation and properly combined with a simplified analytical treatment of leakage flows, is first presented and used to characterise the stationary behaviour of a 9 piston pump for different operating conditions and different configurations. In this study attention is focused on pump volumetric efficiency dependency on overall operational conditions as supply pressure, pump speed, leakage clearance heights, swash plate angle and port plate timing. Successively, a numerical vs. experimental comparison of steady-state pump characteristics is presented; this last part of the paper has been developed with the aim of showing the validity limits of the assumptions made to build up the numerical model. Results confirm the applicability of the simplified hypotheses introduced and validates the analysis of volumetric efficiency previously performed.
##### Scheda breve Scheda completa Scheda completa (DC)
1999
The sixth Scandinavian international conference on fluid power
Tampere, Finland
25-28 Maggio 1999
459
469
Cantore, Giuseppe; Borghi, Massimo; Milani, Massimo
Variable Displacement Axial Piston Pump Volumetric Efficiency Analysis / Cantore, Giuseppe; Borghi, Massimo; Milani, Massimo. - ELETTRONICO. - (1999), pp. 459-469. (Intervento presentato al convegno The sixth Scandinavian international conference on fluid power tenutosi a Tampere, Finland nel 25-28 Maggio 1999).
File in questo prodotto:
Non ci sono file associati a questo prodotto.
##### Pubblicazioni consigliate

I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: `https://hdl.handle.net/11380/743908`
• ND
• ND
• 0