How does an engine work 8

How does an engine work? - easily explained

Most vehicles are powered by a gasoline engine. If you've always wanted to know how an engine works, we have the answer for you in this article.

How a 4-stroke engine works

The four work steps of an engine consist of intake, compression, work and exhaust. And this is how it works:

  • An engine has several cylinders.
  • The cylinders work in 4 strokes (4 stroke engine).
  • First, the cylinder piston moves down and sucks in a mixture of air and gasoline through a valve.
  • In the second step, the piston rises and compresses the mixture.
  • In the third cycle, a spark from the spark plug causes this mixture to explode. The pressure now pushes the piston down very quickly.
  • In the fourth step, the piston shoots up again and pushes the burnt gases out through a valve.
  • This sequence is repeated as long as you keep the engine running.
  • The movements are transferred from the piston to a shaft. This in turn is connected to the wheels of your vehicle via the transmission.

Differences between diesel and 2-stroke engines

The functions are basically similar, as all combustion engines repeat the 4 work steps. However, there are a couple of differences:

  • There is no spark plug in the diesel engine.
  • The explosion of the mixture is caused by the pressure of the piston.
  • As the name suggests, a two-stroke engine works in two strokes.
  • You will not find any valves here.
  • The mixture is drawn in through slots under the piston as it moves upwards.
  • At the same time the gas is compressed and ignited.
  • When the piston moves down again, new mixture is pushed upwards and the burnt gas is forced outwards.

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