Int Coolling System

““INTELLIGENT INTELLIGENT COOLING SYSTEMCOOLING SYSTEM””

Submitted ByTejeshwara Reddy

1

SEMINAR SEMINAR ONON

……………………CONTENTS……………CONTENTS……………IntroductionNecessity of Cooling SystemBasic components of cooling systemTypes of cooling system Variation in gas temperature Drawbacks of conventional cooling system Fuzzy in cooling systemAdvantagesDisadvantagesConclusion References

2

…………….INTRODUCTION……………...

The name “INTELLIGENT COOLING SYSTEM” represents the improved function of a cooling system. The name is so given because in this system a sensor senses the cylinder temperature & controls the opening & closing of water passage in piston-cylinder arrangement.The basic principle behind this is to control flow rate of coolant by regulating the valve by implementing FUZZY LOGIC.

3

….....NECESSITY OF COOLING SYSTEM.…….

The even expansion of the piston in the cylinder may result in

the seizure of the piston.

High temperature reduces the strength of piston.

Overheated cylinder may lead to pre-ignition of fuel.

Physical and chemical change may occur in the lubricating oil

which may cause sticking of piston ring and excessive wear of

cylinder.

If cylinder head temperature is high then power output of

engine is reduced. 4

……...TRANSFORMATION OF FUEL ENERGY………

5

….BASIC COMPONENTS OF COOLING SYSTEM….

Radiator Thermostat Valve Water Pump Cooling Fan Water Jackets Coolant Antifreeze Mixture

6

1. Radiator Radiators are heat exchangers used to transfer thermal

energy from one medium to another for the purpose of cooling and heating.

7

2. Thermostat Valve It is a valve which prevents the flow of water from engine to radiator until the engine warmed up. When engine is cooled no coolant, flow through the engine.

8

3. Water PumpIt is used to pump the circulating water. The water pump is a simple centrifugal pump driven by a belt connected to the crankshaft of the engine. The pump circulates fluid whenever the engine is running.

9

4. Cooling FanIt is driven by the engine output shaft through the same belt that drives the pump. It is provided behind the radiator and it blows air over the radiator for cooling purpose.

10

5. Water JacketCooling water jackets are provided around the cylinder, cylinder head, valve seats, and any hot part which are to be cooled. Heat generated in the cylinder is conducted to the Jacket.

11

6. Antifreeze Mixture

Methyl, ethyl & isopropyl alcohols

A solution of alcohol and water

Ethylene Glycol

Glycerin along with water, etc.

To prevent the freezing of cooling water in western countries antifreeze mixture are added to the cooling water.

There are the following type of antifreeze mixtures :-

12

…………...TYPES OF COOLING SYSTEM..…………..

13

…………..…AIR COOLED SYSTEM………………..

In the air cooled system the heat is dissipated through the fins provided on the cylinder barrel. This method increase the cooling rate. Fins are provided right angle to the cylinder axis.

Engines (Two Wheelers)

Electric Motors

Gas compressors

Industrial & Agriculture

Engines

14

…………..WATER COOLED SYSTEM………….

In this system water is used and made to circulate through the jackets provided around the cylinder, cylinder head, valve ports and seats where it extracts most of heat.

15

……TYPES OF WATER COOLED SYSTEM……

16

…...VARIATION OF GAS TEMPERATURE……

17

DRAWBACKS OF CONVENTIONAL COOLING SYSTEM

18

19

Effect of Over Heating Evaporation of lubricating oil. Thermal stress in cylinder. Burning of piston crown. Sticking of piston rings. Reduction in volumetric efficiency.

Effect of Excessive Cooling

Increased corrosion of engine parts. Reduced mechanical efficiency. Improper vaporization of fuel.

20

..... IMPLEMENTATION OF FUZZY LOGIC.....

Fig. Principle of Engine idle speed control

…………..FUZZY IN COOLING SYSTEM…………..

1) Controlling Valve

2) Sensors

3) Coolant Outlet

4) Coolant Inlet

5) Cylinders

6) Intermediate Jacket

7) Outer Jacket

21

ADVANTAGES OF INTELLIGENT COOLING SYSTEM

Lubricating oil not evaporate and prevent metal to metal contact.

Reduces Thermal stress, hence cracking of piston.

Thermal efficiency will improve.

Prevent Corrosion of Engine parts.

Less maintenance will require.

Proper vaporization of fuel take place.

Less maintenance will require.

22

23

DISADVANTAGES OF INTELLIGENT COOLING SYSTEM

Initial cost is high.Installation is quite difficult.Complex to Design.

The new type of engine cooling system was developed to improve the thermal efficiency of the internal combustion engine. This advanced engine cooling system consists of Sensors to control the quantity of coolant into the engine cylinder block. The thermal efficiency of the internal combustion engine is increased remarkably by using this type of engine cooling system.

We can also improve this technique in Electric Motors ,Gas compressors ,Industrial & Agriculture Engines

24

CONCLUSIONWe have proposed an approach to implement fuzzy logic in an “INTELLIGENT COOLING SYSTEM” possible implication of the system and approach discussed with it’s possible advantages.

25

26

REFRENCES

1) R.K. RAJPUT, Internal Combustion Engines, Second Edition,

Published by: Laxmi Publication, Page No. 482, 484, 501.

2) Gnesan V. I., Internal Combustion Engines, Second Edition,

Published by: Tata McGraw – Hill, Page No. 469, 479.

3) Stamatios V. Kartalopoulos, Understanding Fuzzy Logic, Second Edition,

Published by: Asoke K. Ghosh, Prentice-Hall, Page No. 121, 124, 131.

4) http://www.howstuffworks.com/cooling-system10.htm

27

28

29