Compressed air is a potential energy source which has been widely used in high pressure operations, using compressed air as an alternative for fuel gives a powerful new dimension for eco friendly engines. A compressed air engine works similar to the working of a compression ignition engine. On using a single cylinder engine, the four strokes of a compression ignition engine are simulated. At the end of the compression stroke, air from the compressor is directly injected into the cylinder where air is already present at a compressed state. The air compressed in the cylinder is at a much higher temperature, in the range of about 300–400 degrees Celsius (depending on the compression ratio), than the compressed air from the compressor which is at room temperature, thus causing a difference of temperatures. The mixture trying to attain a common temperature due to expansion, thrusts onto the piston head, hence gives the required power to the engine.
A New Design to the Compressed Air Engine
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Jandhyala, AS, Varun, GS, & Paliwal, R. "A New Design to the Compressed Air Engine." Proceedings of the ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. Volume 4. Charlotte, North Carolina, USA. July 11–15, 2004. pp. 7-11. ASME. https://doi.org/10.1115/HT-FED2004-56010
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