Air Car Pwr Pnt Prtn

8/8/2019 Air Car Pwr Pnt Prtn

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ADHIYAMAAN COLLEGE OF ENGINEERING

(AUTONOMOUS), HOSUR

DEPARTMENT OF MECHANICAL ENGINEERINGAIR POWERED CAR

(COMPRESSED AIR AS AN ALTERNATE FUEL)

PRESENTED BY:

S.KAVIYARASU

AC07UME062

ROLL NO.:02

FINAL YEAR B.E MECH-B


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INDEX

ABSTRACT

WORKING PRINCIPLE

NEW ENGINE DESIGN

BENEFITS OF THE NEW DESIGN ENGINE

THEORY BEHIND THESE CARS P-V DIAGRAM

CHASSIS OF THE CAR

AIR TANKS

BODY OF THE CAR

PERFORMANCE VEHICLE SPECIFICATION

CONCLUSION


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ABSTRACT:

Gasoline, which has been the main source of fuelfor the history of cars, is becoming more andmore expensive and impractical (especially from

an environmental standpoint). But cost is not theonly problem with using gasoline as our primaryfuel. It is also damaging to the environment, andsince it is not a renewable resource, it will

eventually run out. One possible alternative is theair-powered car. One among them is thee.Volution Cars.


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WORKING PRINCIPLE:

The e.Volution is powered by a two-cylinder,compressed-air engine. The basic concept behind theengine is unique; it can run either on compressed airalone or act as an internal combustion engine.

Compressed air is stored in carbon or glass fiber tanksat a pressure of 4,351 pounds per square inch (psi).This air is fed through an air injector to the engine andflows into a small chamber, which expands the air.

The air pushing down on the pistons moves the

crankshaft, . When the car is moving at speeds below60 kmph, it runs on air. At higher speeds, it runs on afuel, such as gasoline, diesel or natural gas.which givesthe vehicle power.


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NEW ENGINE DESIGN:

Guy Negres engine is, in fact, a radically new internalcombustion engine. Two chambers, one for intake andcompression and one for expansion and exhaust, areseparated from a spherically shaped combustion chamber.

At the heart of the engine is a small combustion chamber. Apiston in a compression cylinder outside this chamberforces air through a valve; getting compressed and thusheating a mixture of air and petrol in the process. With allvalves to the chamber closed the hot mixture is ignited. Inthe final part of the cycle the hot gas escapes through avalve into a separate expansion cylinder where it drives apiston cooling in the process.


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BENEFITS OF THE NEW DESIGN ENGINE:

One of the benefits of having separate compressionand expansion cylinders is that the expansion cylindercan be made several times larger than the compressioncylinder. This takes maximum advantage of the stroke

that provides the engine's power. The design of the engine allows the fuel to burn over a

period up to four times longer than in a four-strokeengine.

The pollution is much less and quieter because theexplosion of the fuel happens in the small combustionchamber rather than being allowed to propagatethrough the cylinder as in conventional motors.


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Intake and compression cylinder: 230 cm

Expansion and exhaust cylinder: 500 cm

Power max. HP-Cyl (kW-Cyl): 25 (18.3) at 3000 rpm

Torque max. Kgm-Cyl (Nm-Cyl): 6.3 (61.7) at 500 2500 rpm

Power source: Electronically injected compressed air


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PV DIAGRAM


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The Isotherm, the green line, represents the idealtransformation of the compressed air: in effect, the airtemperature is the same coming in and going out of thecylinder, and power is maximized.

On the contrary, the worst transformation is the adiabatictransformation, represented by the red line. The derivedpower is minimal, and the air leaves the system at a verylow temperature indeed.

The blue line, or polytropic curve, represents the

transformation that actually takes place, and the individualstages outlined above can be seen. The transformationgoing through the first cylinder is represented by thepolytropic line


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CHASSIS OF THE CAR:

In practical terms compressed air at 300 barsis stored in the carbon fibre tanks A.

The air is released through the main linefirstly to an alternator B where the first stageof decompression takes place.

The now cold air passes through a heat

exchanger C which adds thermal energy to theair and provides a convenient opportunity forair conditioning D.


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The warmed compressed air now passes tothe engine E. where a two more stages ofdecompression and re-heating take place.

The motor drives the rear axle G through thetransmission F. Control of engine speed isthrough a conventional accelerator pedal Hcontrolling a valve within the motor. Anenergy recycler J is under tests which usesengine braking K


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AIR TANKS:

One of the most frequently asked questionsregards the safety of the air tanks, which store90m3 of air at 300 bars of pressure.

. In the case ofan accident, with air tankbreakage, there would be no explosion orshattering, now that the tanksare not metallic.Due to the fact that they are made ofglass fibre

the tanks would crack longitudinally, and the airwould escape, causingastrong buzzingsoundwith no dangerous factor.


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Close up on refilling tanks with

compressed air.


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PERFORMANCE OF AIR POWERED CARS:

Maximum spee 60mph

Acceleration 0-30 mph: 7 seconds

Range 120 miles or 10 hours


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CONCLUSION:

Within the next two years, you could see the

first air-powered vehicle motoring through

your town. Most likely, it will be the evolution

car that is being built by Zero Pollution

Motors, in Brignoles, France.

However proper maintenance helps us to keep

the vehicle running smoothly.


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THANK YOU

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Air Car Pwr Pnt Prtn