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

Weve all seen them before, the mysterious chunks of metal low the hoods of our cars. They start when we turn the key and take us where we want to go. only if how does an locomotive engine work? Internal combustion engines are a very(prenominal) important part of everyday life. We use them in our cars, trucks, airplanes. boats, snowmachines, 4 wheelers, and heavier-than-air machinery. These pages impart help familiarize you with the basic concepts of how an engine works, an understanding of engine output, and some information on how forced induction or pressurise step-ups power output.Engine Basics A very common variation of the internal combustion engine is the quartette stroke engine. These engines have tetrad strokes for each combustion cycle. These engines are primarily used in automobiles barely 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 l eft top of the cylinder) opens allowing pert oxygen rich air mergeed with displace to enter the cylinder.2. crunch The piston 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 twinkle plug fires igniting the mixture. Due to the high school compression of this mixture (typically around xcl PSI in a typical engine) it is very volatile and it explodes when the travel is introduced. This pusehs the piston downward and produces power.4. Exhaust After the Air/Fuel mix has been burnt the remaining chemicals in the cylinder (water and CO2 for the most part) must be removed so that fresh air can be brought in. As the piston goes back up after combustion the resign valve (right top of cylinder) opens allow... ... 91 and 9.51) will not burn all in all resulting in excess carbon buildup (this is why you SHOULD NOT use anything high than 87 octane in a regular engine). However, in a high compress ion engine as are seen in high residual sedans and coupes these fuels will prevent detonation and yield better power and reliability. The octane grade is the only difference between fuel grades at the gas essence so dont be fooled into thinking that premium gas is any speckless or that it will make your car run any better, it will only burn differently.Conclusion With adequate fuel supply and hiking 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. powerfulness levels as high as 300-400 HP can be extracted from 1.8-2.2L engines with right designed and managed boost setups.