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International Journal of Rotating Machinery
Volume 2012, Article ID 578745, 10 pages
Research Article

A Study of Performance Output of a Multivane Air Engine Applying Optimal Injection and Vane Angles

1Department of Mechanical Engineering, SMS Institute of Technology, Kashimpur Biruha, Lucknow 227125, India
2Department of Mechanical Engineering, Harcourt Butler Technological Institute, Nawabganj, Kanpur 208002, India

Received 5 October 2011; Revised 12 March 2012; Accepted 15 March 2012

Academic Editor: Mustafa Canakci

Copyright © 2012 Bharat Raj Singh and Onkar Singh. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper presents a new concept of the air engine using compressed air as the potential power source for motorbikes, in place of an internal combustion engine. The motorbike is proposed to be equipped with an air engine, which transforms the energy of the compressed air into mechanical motion energy. A mathematical model is presented here, and performance evaluation is carried out on an air-powered novel air turbine engine. The maximum power output is obtained as 3.977 kW (5.50 HP) at the different rotor to casing diameter ratios, optimal injection angle 60°, vane angle 45° for linear expansion (i.e., at minimum air consumption) when the casing diameter is kept 100 mm, at injection pressure 6 bar (90 psi) and speed of rotation 2500 rpm. A prototype air engine is built and tested in the laboratory. The experimental results are also seen much closer to the analytical values, and the performance efficiencies are recorded around 70% to 95% at the speed of rotation 2500–3000 rpm.