Introduction

The steam engine is the origin of modern mechanization formidabledevelopment, we can say that in the course of this development, the discovery of the internal combustion engine has been a revolution, of importancecomparable to that caused the appearance of the machine steam.
The idea of ​​using pressure to push something up or out is not new. A type of turbine (engine) of steam was designed about 2000 years ago by Hero ofAlexandria. The Chinese used rockets fireworks pyrotechnics that ran for over800 years. Sir Isaac Newton explained the principle of thrust by the reaction in his "laws of motion" in 1687. In 1791, John Barber of England designed a gas turbine, but it took 100 years to develop appropriate materials to build it.

The Lenoir gas engine (1860), which worked with explosions, but without pre-compression, was the first industrial engine. Then the engine of "pre-compression cycle and 4 cycle," defined by Beau de Rochas (1862) and byOtto in 1878, provides the industry a medium power motor, the price and complexity are not comparable to the set steam-generator.