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COMPRESSED AIR ENGINE
Yash Ghanshyam Gupta.Marathwada Mitra Mandal’s Polytechnic.Department of Automobile engineering.
PROBLEMS WITH I.C ENGINE:- • Use of gasoline results in
pollution and damage to the environment.
• The emission of CO2 also results in Global Warming.
• The fossil fuels are present in limited quantity and are depleting at a very fast pace.
• Cost of petroleum products is increasing by leaps and bounds.
• High maintenance cost involved.
INTRODUCTION •A compressed air engine is a type of motor which does mechanical work by expanding compressed air. •A compressed air engine generally convert the compressed air energy to mechanical work through either linear or rotary motion.• Linear motion can come from either a diaphragm or piston actuator, while rotary motion is supplied by either a vane type air motor or piston air motor.
The Di Pietro motor Reciprocating compressed air enigine.
Working of a C.A.E.• It works only with two strokes that is a inkate and a
exhaust stroke. • Stroke 1• In the first stroke the intake valve will open and the
compressed air will make impact with the piston. As a result the piston will go down from the top dead center to the bottom dead center. Hence the intake stroke will also act as power stroke as well.
• Stroke 2• In the second stroke the exhaust valve is
opened and the compressed air which gave its energy to piston in the last stroke to make it move goes out as the pressure of the ambient is even lower.
Building Compressed Air Engine From Conventional
Engine.• To delete the power
stroke.• Valve timing. • Alterations in
Camshafts.• Change in intake
valve.
To delete the power stroke.• As the engine is
supplied with the compressed air so compression stroke will not be required
• because when the compressed air will again be compressed the power output would not be sufficient.
Alterations in Camshafts.
• Design of a 4-stroke S.I engine cam shaft.• Valve timing diagram. `
Modification in the cam.
• Design of a compressed Air engine cam shaft.• Valve timing diagram.
Change in intake valve. • Intake valve doesn’t lie exactly at the center of cylinder
head but is located at one edge of cylinder head instead, this will also cause the power loss because the more is the energy required to move the piston by pushing it not exactly from the center as compared to the amount of energy required to move the piston by pushing it from the center.
FROM Mr. Manish R. Hatwar’s research paper.
• SPECIFICATIONS• Power source
Electronically injected compressed air: 300 bar.• Recharge
Recharge time: Less than 3 minutes at Compressed air station.
Oil change: 0.8 liters per 50,000 Miles• Engine
Intake and compression cylinder: 500 c.c. Power max. HP (kW): 25(18.3) at 3000 rpmTorque max. Kgm (NM): 6.3(61.7) at 500-2500 rpm
• PerformanceMaximum speed: 60 mphAcceleration times: 0-30 mph in less than
3 seconds. Weight: 1543 lbs.
Light weight provides Good road-holding due to low center of gravity and low energy consumption.
COMPARISON WITH ELECTRICAL VEHICLE’S
SPECIFICATION 200 nisan altra ev 2001 toyota reva C.A.V.
FUEL TYPE Electric. Electric. Compressed air.
MPG AVG 123 104 198
FUEL cost $331.00 $391.00 $212.00
TOP SPEED 75 MPH 78 MPH 60 MPH
RECHARGE TIME 5 Hours 6.3 Hours 3-4 min.
PRICE $10,000 $9,4000 $3,4000
CONCLUSION.• Compressed air for vehicle propulsion is already being
explored and now air powered vehicles are being developed as a more fuel-efficient means of transportation. Some auto mobile companies are further exploring compressed air hybrids and compressed fluids to store energy for vehicles which might point the way for the development of a cost effective air powered vehicles design. Unfortunately there are still serious problems to be sorted out before air powered vehicles become a reality for common use, but there is a hope that with the development in science and technology ,well supported by the environmental conscious
• attitude and need to replace costly transportation methods, air-powered vehicles will definite see the light of the day.
REFRENCES• http://www.theaircar.com/• http://auto.howstuffworks.com/air-car.htm• http://www.planetsave.com/ViewStory.asp?ID=24• http://www.evworld.com/databases/shownews.cfm?
pageid=news040303-06• http://news.bbc.co.uk/1/hi/world/europe/2281011.stm• htto://zevcat.com/• .Studay amd development of compressed air engine- single
cylinder:a review study Mistry Manish K..., Dr. Pravin P.Rathod, Prof . sorathiya Arvind S.
• Air Powered engine (20110) Prof.B.S. PATEL,Mr R S BAROT, Karan Sahah.
• PC Mubashar Sharif PC Sajid Ali - NS Asad Ali Janjua• https://en.wikipedia.org/wiki/Compressed-air_vehicle