Difference Between I.C. Engines and E.C. Engines With Comparison Chart
Contents
Summary:
- Engine is a device that converts one form of energy into another form.
- Heat engine is a device that transforms the chemical energy of a fuel into thermal energy and utilizes this thermal energy to perform useful work.
- Thus, Thermal energy is converted to mechanical energy in a heat engine.
- A Heat engine may be classified based on where the combustion of fuel takes place, i.e. whether outside the cylinder or inside the cylinder.
- External Combustion Engines (E.C. Engines)
- Internal Combustion Engines (I.C. Engines)

Comparison Chart
- Comparison of IC engine and EC engine is given in the table
I.C. Engine | E.C. Engine |
---|---|
Combustion of fuel takes place inside the cylinder |
Combustion of fuel takes place outside the cylinder |
Working fluid may be Petrol, Diesel & Various types of gases |
Working fluid is steam |
Require less space | Require large space |
Capital cost is relatively low | Capital cost is relatively high |
Starting of this engine is easy & quick | Starting of this engine requires time |
Thermal efficiency is high | Thermal Efficiency is low |
Power developed per unit weight of these engines is high |
Power Developed per unit weight of these engines is low |
Fuel cost is relatively high | Fuel cost is relatively low |