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"Air Engine – The Future Of Next Generation Cars"

My Theory on Simulation and Construction of Single-Stage Reciprocating Pneumatic Transmission System Engine



We power our vehicles today is based on the legacy of energy discoveries of the 1800s. Oil was first taken out of the ground in Pennsylvania in the 1860s.  When the automobile industry came into being, petroleum was the first candidate for the energy source. Even though the Great scientist and inventor of his time 'Thomas Edison' did build an electric car, but electricity was not as wide spread as it is now, so the power of the Rockefeller oil cartel won the day.

But today we live in period we science has penetrated ever smaller particles, but still we are using the energy source which was discovered 150 years ago.  we should ask our self that do we still use candles to light our homes?  Do still we use tubes to power our radios and TVs?  Do still we cool our houses with blocks of ice?  and if the answer is No, no and no! Then why do we continue to blindly define transportation energy on an 150 year old discovery.

Look around and you will come to a conclusion that every thing is energy. Even the matter we breath, the 'AIR', is the a form of energy under compressed state. Air is a vital utility used in countless ways to benefit everyday life.  While those in manufacturing and industrial plants recognize the "plant workhorses". And yet we do not realize that compressed air is the energy of choice to power a great variety of applications, And one such application is to fuel our mode of transportation with compressed air.


Air-powered engine utilizes high pressure compressed air to produce dynamic, when the compressed air expands and do work in the cylinder. The compressed air engine does not consume fuel or emits exhaust pollution; it can alleviate-ate the pressure of urban air pollution, so it is the main research direction of the new energy vehicles recently. Currently, related researches of compressed air are carried out all over the world.The French company MDI has developed a partial commercial production of the air powered car. Research in India on air powered cars carries out mainly in IIT and Amrita University, and it is still at exploring stage. Domestic study on air-powered engine focus on improving the piston-crank air-powered engine, for the existing air-powered engine only provides one-way power during a single duty cycle, and the gas expansion contributes a lateral force on the crank, which causes the loss of partial expansion work. 
         
Based on the principle of gas expansion, a new structure of reciprocating air-powered engine is proposed. It can convert the reciprocal motion of piston into one-way rotary motion of the output shaft and provide engine power. According  to  the  pneumatic  transmission  system dynamics,  the  mathematical  model  of  the  air-powered  engine  is  established  and  simulated. Then  analyze  the  influence  of  the  air  state  parameters  and  system  structure  parameters  on performance  of  the  engine,  and  the  principle  prototype  is  processed. The high pressure air outflows from tank, achieves the pressure regulation by pressure reducing valve, changes the direction of the chamber or chamber without rod through directional control valve. Compressed air does work by expansion to drive the reciprocating motion of double-sided rack. Then rack drives the upper and lower gear with the first and second gear and the third gear at the same time, in order to produce sustained rotary motion with output shaft. Reciprocating two-way motion uses the whole output force of cylinder to do work, and outputs mechanical energy.

The results show that the structure design of the engine is feasible, the average output torque and rotational speed increase with the increase of intake pressure. Under the circumstance with the same intake pressure, the average output torque increases with the increase of cylinder bore, but the rotational speed decreases with the increase of it. The results lay a foundation of further study on optimizing structure design.

The research paper was published in International Journal of Scientific and Research Publications, Volume 2, Issue 7, July 2012 

For more details you may please visit the Journal link of JULY edition. 
Paper Link: http://www.ijsrp.org/research_paper_jul2012/rp30.html

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