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ENGINE OPERATION

Hello friend's, so in this post we will talk about engines.

1. INTRODUCTION 
Internal combustion engines are those heat engines that burn their fuel inside the engine cylinder. On the other side, extermal combustion engines are those heat engines that burn their fuel outside the engine cylinder. These are steam engines. The energy developed during the combustion of fuel is transmitted to steam, which acts on the piston inside the cylinder. In internal combustion engines, the chemical energy stored in the fuel is converted into heat energy by combustion. The heat energy is converted into mechanical energy by the expansion of gases against the piston attached to crankshaft that can rotate. The engines that burn petrol are known as petrol engines. Other types of internal combustion engines burn heavier oils, of these types the diesel engine has come into the widest use. 

2. I.C. ENGINE AND STEAM ENGINE 
Both I.C. engines and steam engines are basically heat engines and convert heat energy into mechanical energy. But I.C. engines are now widely used for this purpose due to some reasons. The class of service is the main factor in many cases. One of the outstanding uses is in the field of transportation. In many industries, farms, simplicity and low cost of operation are the determining factors in the adoption of I.C. engines. The main differences between the I.C. engine and steam engine are as follows : 

1. In I.C. engines, the combustion of fuel takes place inside the engine cylinder, while in steam engines, the combustion of fuel takes place outside the cylinder. 

2. The working temperatures and pressures in I.C. engines are much higher than those in steam engines. 

3. Due to high temperatures and pressures, materials having better resistance are required for I.C. engines. 

4. I.C. engines are single acting. Piston is directly connected to connecting rod. There is no piston rod and hence no stuffing box. 

5. I.C. engines have high efficiency as compared to that of steam engines. 

6. Steam engine requires a big boiler to store water for converting it into steam and a condenser to condense exhaust steam into water. But I.C. engines require only a small tank to store fuel ; and there is no steam condenser in it. 

7. I.C. engines are easy and quick to start and stop. Steam engines take time in lighting the fire and generating the steam. 

8. I.C. engines are lighter and cheaper as compared to steam engines.

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