Next Article in Journal
Hydrogen-Rich Gas Production by Sorption Enhanced Steam Reforming of Woodgas Containing TAR over a Commercial Ni Catalyst and Calcined Dolomite as CO2 Sorbent
Previous Article in Journal
The Analysis of the Aerodynamic Character and Structural Response of Large-Scale Wind Turbine Blades
Previous Article in Special Issue
System Design and Analysis of a Directly Air-Assisted Turbocharged SI Engine with Camshaft Driven Valves
Article Menu

Export Article

Open AccessArticle

Design of a Hydraulic Motor System Driven by Compressed Air

Department of Power Mechanical Engineering, National Tsing-Hua University, Hsin-Chu City 30013, Taiwan
Author to whom correspondence should be addressed.
Energies 2013, 6(7), 3149-3166;
Received: 25 February 2013 / Revised: 18 June 2013 / Accepted: 18 June 2013 / Published: 27 June 2013
PDF [577 KB, uploaded 17 March 2015]


This paper presents the design of a highly efficient pneumatic motor system. The air engine is currently the most generally used device to convert potential energy of compressed air into mechanical energy. However, the efficiency of the air engines is too low to provide sufficient operating range for the vehicle. In this study, the energy contained in compressed air/pressurized hydraulic oil is transformed by a hydraulic motor to mechanical energy to enhance the efficiency of using air power. To evaluate the theoretical efficiency, the principle of balance of energy is applied. The theoretical efficiency of converting air into hydraulic energy is found to be a function of pressure; thus, the maximum converting efficiency can be determined. To confirm the theoretical evaluation, a prototype of the pneumatic hydraulic system is built. The experiment verifies that the theoretical evaluation of the system efficiency is reasonable, and that the layout of the system is determined by the results of theoretical evaluation. View Full-Text
Keywords: air engine; pneumatic engine; hydraulic motor; efficiency; air car engine design air engine; pneumatic engine; hydraulic motor; efficiency; air car engine design

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Shaw, D.; Yu, J.-J.; Chieh, C. Design of a Hydraulic Motor System Driven by Compressed Air. Energies 2013, 6, 3149-3166.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top