- Internal combustion engines can be of various kinds, it can be diesel engine or gas turbine engines. They have their own different advantages and disadvantages.
- Steam engine which is used in old trains or boats have external combustion engine. The fuel used is in form of coal, wood or even oil. They burn outside the engine to create steam and the steam which is created helps to provide movement inside the engine.
- Spark plug
- Valves
- Connecting Rod
- Crankshaft
- Timing parts