gasoline and fuel oil
The four-stroke engine used in automobiles is an example of an internal combustion engine.
combustion
They were powered by steam engines.
An internal combustion engine.
An internal combustion engine is one that burns a rapidly combusting fuel in small bursts inside of cylinders. The force of the burning fuel expanding pushes on pistons which fit into the cylinders, and these pistons are used to power the engine. Examples include cars and trucks which burn fuels such as gasoline, diesel, or ethanol.
Coal was the first, but it was only burnt to heat water to create steam. Thus, anything that burns efficiently can be used to run an internal combustion engine! Lately, pre-used vegetable oil, has even become popular in order to power cars (which are have always, used this type of engine), with only tiny modifications, to the usual car engine used with petrol or gas.
Oil that has been removed from an internal combustion engine after being used as a lubricant in that engine.
The internal combustion engine is used in almost everything that needs power or motive traction. Cars, trucks, motorcycles, boats, ships, aircraft, and many other things use internal combustion engines. The internal combustion engine is needed to convert fuel chemical energy to rotational mechanical energy, which can now be used for many different applications.
Horsepower
In terms of engines, an external combustion engine such as a steam engine burns fuel outside of the pressure cylinder used to drive the piston. An internal combustion engine such as a petrol or diesel engine burns the fuel inside the pressure cylinder used to drive the piston.
Oil that has been removed from an internal combustion engine after being used as a lubricant in that engine.
The most popular combustion engine is the internal combustion engine. It is used most often in spark ignition engines such as cars or lawn mowers. Diesel combustion engines are generally large trucks and construction vehicles.