what are the four strokes of an internal combustion engine and what are their functions?

Question by El: what are the four strokes of an internal combustion engine and what are their functions?
Please help! I really need to answer this question so i can write it in my essay: What are the four strokes of an internal combustion engine and what are their functions? Thanks ! 😀

Best answer:

Answer by KC2UOZ
Intake, Compression, Combustion, Exhaust.

Intake: takes in the air and gas.

Compression: Compresses the air and gas into a mixed gas.

Combustion: Spark plugs ignite the mixture.

Exhaust: The remaining gases exit the chamber.

What do you think? Answer below!

4 Comments
  1. Reply
    nick May 9, 2013 at 8:21 pm

    i googled your question and got thousands of hits, heres the first one
    http://en.wikipedia.org/wiki/Four-stroke_engine

  2. Reply
    Michael S May 9, 2013 at 9:04 pm

    I hope no one gives you the answers.
    We have enough incompetent mechanics in the field as it is now, we don’t need another.
    Do your own homework and maybe learn something.

  3. Reply
    William W May 9, 2013 at 9:15 pm

    1 Intake – pulls air / fuel mixture into the cylinder through the intake valve.
    2. Compression – Squeezes the mixture.
    2a. The spark occurs when the piston is at, or a little before, the top.
    3. Power – The piston is driven down.
    4. Exhaust – The spent gases are driven out through the exhaust valve.

  4. Reply
    Mr. Magic May 9, 2013 at 10:14 pm

    Fuel injected vehicle
    Gas is technically regulated to supply this to the throttle-body with the incoming air charge, this is mixed with the gas within the cylinder chambers, when the piston is coming down, as the piston rises, it (compresses) the air/fuel mixture and the sparkplug ignites at the precise timing, then explodes that mixture which renders the engine power for that cylinder, forcing the cylinder back down again, as the sequence proceeds brining the piston back up, it exhausts that exploded mixture out through the catalytic converter for computer tesing with the oxygen sensors so the computer can adjust according to spec the next fuel to air ratios (mixture).

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