The operation of a gasoline motor is a very complex process, since we are speaking of a thermodynamic machine formed by a set of pieces or fixed and movable mechanisms, whose main function is to transform the chemical energy that provides the combustion produced by a mixture of air and fuel in energy. That is to say, the motors of internal combustion are basically a machine that mixes oxygen with gasified fuel. Once mixed intimately and confined in a denominated space combustion chamber, the gases are ignited to burn themselves (combustion). Due to its design, the motor, uses the heat generated by the combustion, like energy to produce the revolving motion that we know. When it happens that transformation of chemical energy in mechanics is possible to be carried out a useful work like, for example, to move an automotive vehicle like a car or automobile, or any other mechanism, as it could be an electrical generator. If at some time we compared the parts or fundamental mechanisms that they structurally conform a gasoline motor and a diesel engine, we will see that in many aspects they are similar, whereas in others they differ completely, although in both cases its principle of operation is similar..