The Engine's History and Purpose

What is the purpose of an internal combustion engine? It's main purpose is to convert the chemical energy that is found in the fuel into mechanical power. How does this happy? In an internal combustion engine, the energy in the fuel is released when the fuel is oxidized or burnt inside the engine. In contrast, the fuel is not burnt inside when we are dealing with an external combustion engine. 

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Today, there is a wide use of spark-ignition engines and compression-ignition engines. These engines' simplicity, high power/weight ration, and study constructions have contributed to their wide application in land transportation, sea transportation, and even air transportation. 

The use of heat engines began more than 250 years ago. This began with engines that burned fuel, raised water to steam, and then use the energy to produce work. However, in 1860s, internal combustion engines were developed. . In the beginning, combustion engines were built for commercial use. In addition, these engines used a mixture of coal-gas air without compression. The mixture was first drawn into the cylinder. Then a spark ignited the mixture. The pressure would then increase and the burned gasses under pressure gave the piston the power to then do an exhaust stroke. 

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The first combustion engines developed were a first great step. Yet there was still much room for improvement. The combustion engines, for instance, only had an efficiency at about 5 percent. In 1867, however, developed a combustion engine that used atmospheric pressure to push the piston inward. The result efficiency of such combustion engines were a doubling, that is, the efficiency was around 11 percent.