The result of the lighting of this fuel, pressure on combustion chamber increased drastically. The result of the expansion of gases or explosive effect will create rapidly rising pressure exceeds the pressure generated by the compression of the shaft before the fuel is ignited.
High-pressure hot gases produced would need the space to development, then the only components which can be moved inside the cylinder is just part of the shaft and the shaft is pressed into the bottom hole of the cylinder. Travel the shaft due to gas pressure is known as step effort or work steps.
Comparison of the amount of fuel that is in the cylinder on the position of the shaft below, or before the fuel is compressed and the amount of fuel after it is compressed, or on the position of the shaft at the top as the comparative ratio of compression. The higher the compression ratio of an engine comparison will then be greater power also can be generated by the machinery.
A bizarre machine with petrol fuel this is has a certain limit in its ratio comparison. Because when the ratio exceeds its terms then the shaft will be quickly damaged. We take the example of the highest compression ratio limit for example petrol engine is 12:1, which means the volume of the cylinder holes filled by fuel at the time of the position of the shaft below is 12 sections, then the fuel is compressed the number into one piece.
Then when there is a gasoline engine construction comparison ratio of its more than 12:1, the consequence is the shaft will quickly break down and going on detonation (the sound of tapping) inside the machine and the machine can't live perfectly. Otherwise, once the engine compression ratio 9:1, then the machinery can live well.
Movement or step down and up the shaft in the hole of the cylinder called a linear movement, in order to make use of linear movement this means that movement must be converted into rotary motion (spin). The conversion of linear motion into rotary motion is performed by Rod shaft and crankshaft.
And encouraged by the gas piston cylinder bottom is called the working steps or measures of business, generated due to fuel mist transforms into a high-pressure hot gas. This fuel mist can only be switched on once, thus meaning must be prepared or provided new fuel to be sucked entered the cylinder bore.
The remaining combustion gases have been exploited to push the shaft also can not be used anymore and must be discarded. So to keep the machine lives on here there are two answers in order to carry out the work. The answer to the first of four steps and answer the second of two steps machine.