Adiabatic Abstract

8/2/2019 Adiabatic Abstract

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PAPERPRESENTATION ON

ADIABATIC ENGINE

ABSTRACT:

An adiabatic internal combustion engine capable of increasing a thermal

efficiency remarkably as compared with conventional internal combustion engines

capable of easily realizing a spark ignition adiabatic engine represented by gasoline

engines and rotary diesel engines, and also capable of realizing an adiabatic engine

relatively low in cost and reliable in durability where in a cooling loss is lowered

or eliminated by insulating the combustion chamber of a reciprocating or a rotary

engine so as to reduce fuel consumption accordingly and increase fuel economy

more than conventional engines, heat resisting material is installed on the surface

of the combustion chamber and insulating material is installed between the heat

resisting material and engine base material (aluminium alloy or iron) so as to

enable a low cost and durable insulation where the temperature of a combustion

chamber valve is not increased to a high temperature. Components, their

connection, improving efficiency of engine compared with normal engine etc areexplained here.

INTRODUCTION:

ENGINE:

A machine that converts one form of energy into another form of energy.

HEAT ENGINE:

An engine which transforms chemical energy of a fuel into thermal energy to

perform useful work

NORMAL DIESEL ENGINE


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CLASSIFICATION OF ENGINES:

Engines are basically classified into two types

1. IC ENGINE

2. EC ENGINE

These are further classified into two types

1. Reciprocating engine

2. Rotary engine

NEED FOR A NEW ENGINE:

To improve the efficiency, to reuse the exhaust gases and to overcome other

disadvantages of a normal engine a new engine called ADIABATIC ENGINE is

introduced to improve such qualities with low cost and having the features of

durability and reliability.

ADIABATIC ENGINE:

It can be defined as the heat engine or thermodynamic system which transfers

thermal energy into useful work without gain or loss of the heat.


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HISTORY:

HENRY SMOKEY YUNICK who was an American mechanic and designer forcars associated with motorsports. He was born on 25-5-1923. He left his schooling

at the age of 16 years, stayed in a separate city from his parents, got married and he

started working as a mechanic and did many amazing things like

1. Nitrous oxide injection

2. Extended tip spark plugs

3. Reversible cooling system

4. Variable ratio power steering

All his attempts were successful but not known to the world.

INITIATION:


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BASIC LOGIC INVOLVED:

1. Porous metal plate coated with Li2 ZrO3 was used to make CO2 separate from

the exhaust gas of the engine.

2. CH4 and CO2 are supplied to the catalytic converter and reformed CO and H2

gas

3. Gas and Steam turbine is installed to recover the exhaust gas energy.

4. As a result, thermal efficiency of the engine systems will be improved to about

57.5%

STRUCTURE OF VESSEL FOR REFORMING CH4:

COMPARISION BETWEEN ADIABATIC AND NORMAL ENGINE:

NORMAL ENGINE:

Efficiency is low Fuel consumption is high Ceramics are not used Exhaust gases cannot be reused

ADIABATIC ENGINE:

Efficiency is high Fuel consumption is low Ceramics are used on adiabatic members in combustion chamber


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Exhaust gases can be reusedCONSIDERATIONS TO BE NOTED:

1. Sectional area of auxiliary cylinder is larger than the sectional area ofnormal cylinders

2. Pistons of normal cylinders should be at T.D.C and the piston of auxiliarycylinder should be at B.D.C

3. Exhaust valves of the normal cylinders should be connected to suction valveof auxiliary cylinder through a common shaft

ADVANTAGES AND DISADVANTAGES:

Advantages:1. Thermal efficiency can be improved and fuel consumption can be

lowered

2. Low in cost and reliable in durability

3. Combustion gases are sent after sometime there by decreasing the air

pollution

Disadvantages:1. Ceramic coatings may be damaged after sometime

2. Internal construction little difficult

Conclusion:

Engines which are the most useful components in every automobile neededto be developed with improving efficiencies and less fuel consumption

Production rate of this kind of engines should be increased for better runningof automobiles and for having pollution free environment.

M.Saikumar K.Sudheer,


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III B.Tech,Mechanical III B.Tech,Mechanical

[email protected] [email protected]

Ph.no.9908276111 Ph.no.8790077277

A.H.S.K.Chaitanya,

III B.Tech,Mechanical

[email protected]

Ph.no.9000504789
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