Simple Tech: Engine block explained

An engine is a machine which burns fuel and delivers useful work. To do this, air and fuel enters through camshaft controlled inlet valves, burns and the expanding gases force the piston, which is below the valves, to move down in the cylinder bore. This motion is transferred to the crankshaft, below the piston, which is connected to it by the connecting rod, and this drives our cars. The burnt gases are expelled by the exhaust valves and the cycle repeats. This is the simplest form of an engine, a single cylinder, think 100cc...