IC engine & EC engine

Lets compare IC engine & EC engine:


1) Efficiency of IC engine is higher as compared to EC engine.

In such type of engine, product of combustion produces power directly. eg. In petrol engine or in diesel engine, we burn mixture of air & fuel due to which huge pressure is generated and it moves the piston directly. So, combustion of air-fuel mixture is directly responsible for the output. Here there is no such system of heat transfer. Here the stroke of the piston produce power. So, as there is no transfer of heat to working fluid, losses will be less compared to EC engine where transfer of heat takes place.


2) Cost of IC engine is low as compared to EC engine.

The component we use in EC engine like compressor, turbine etc. are very costly which make EC engine costly whereas there is no need of such component in IC engine.


3) Working pressure and temperature are high in IC engine as compared to EC engine.


4) IC engine starts instantaneously whereas EC engine takes some time to start.

This you might have experienced in real life, when you start your vehicle, it starts instantaneously but it is not the case in EC engine. Because in EC engine the size of furnace is very large and once all the coal entered in the furnace, we ignite it. Now it takes some time to generate considerable amount of heat. In boiler, liquid will also take some time to convert in vapour. Then it will come to turbine where it starts rotating. So this all processes take time and as result it take some time to start.


5) Power to weight ratio of IC engine is high as compared to EC engine.

In EC engine, very big devices are used like compressor, turbine, boiler etc. The power generation as a result in EC engine is more than IC engine but when we compared the ratio of how much power it is generating to its weight, this ratio is lesser than IC engine.