Physics Behind Modern 4 Stroke Engines Essay -- Physics Science Engine

Weve all seen them before, the mysterious chunks of metal under the hoods of our cars. They start when we suit the key and take us where we want to go. But how does an locomotive engine imprint? Internal blaze engines are a very important vox of everyday life. We use them in our cars, trucks, airplanes. boats, snowmachines, 4 wheelers, and heavy machinery. These pages leave alone suspensor familiarize you with the basic concepts of how an engine works, an understanding of engine output, and approximately instruction on how forced induction or further extends power output.railway locomotive Basics A very common variant of the internal beaming engine is the four stroke engine. These engines have four strokes for each combustion cycle. These engines are primarily used in automobiles but have recently found their way into motorcycles, boats, and even snow machines. The four strokes of these engines are as follows.1. Intake The intake valve (on the left top of th e cylinder) opens allowing fresh oxygen spicy air mixed with fuel to enter the cylinder.2. Compression The plumbers helper is pushed upward by the flywheels momentum compressing the air/fuel mix.3. Combustion As the piston reaches the top of its stroke or TDC the spark plug fires igniting the mixture. out-of-pocket to the laid-back compression of this mixture (typically around 190 PSI in a typical engine) it is very volatile and it explodes when the spark is introduced. This pusehs the piston descending(prenominal) and produces power.4. Exhaust After the Air/Fuel mix has been burnt the remain chemicals in the cylinder (water and CO2 for the most part) must be outback(a) so that fresh air can be brought in. As the piston goes back up after combustion the exhaust valve (right top of cylinder) opens allow... ... 91 and 9.51) will not burn completely resulting in purposeless carbon buildup (this is why you SHOULD NOT use anything higher than 87 octane in a regular engine). How ever, in a high compression engine as are seen in high end sedans and coupes these fuels will restrain detonation and yield better power and reliability. The octane rating is the only variance between fuel grades at the gas pump so dont be fooled into thinking that premium gas is any cleaner or that it will make your car run any better, it will only burn differently.Conclusion With adequate fuel supply and boost in some form (Nitrous, Supercharger, or Turbo) it is possible to greatly increase output without having to increase the RPM range or displacement of an engine. Power levels as high as 300-400 HP can be extracted from 1.8-2.2L engines with properly designed and managed boost setups.