How a 4 Stroke Gasoline Internal Combustion Engine Works

(((Meant to Say 8 Head bolts, not 6))) In this video i am using a 3.5 Horsepower Briggs and Stratton Flathead (process is the same for overhead valve OHV) push mower engine to demonstrate how a 4 stroke (cycle) gasoline engine works. Just remember the 4 strokes, 1 Intake: the engine sucks in a mixture of gas and air through the intake valve from the carburetor do to a vacuum from the piston traveling down the cylinder. 2 Compression: in this stroke the crankshaft is moving the piston up the cylinder compressing the fuel / air mixture. 3. Power: in this stroke the spark plug fires at top dead center (TDC) and causes an explosion forcing the piston back down the cylinder to do high cylinder pressures, turning the crankshaft. 4. Exhaust: in this stroke the explosion just occurred and burnt gases need to escape the cylinder, the piston traveling back up the cylinder forces the burnt exhaust gases out the exhaust valve and into the air. Thats really all there is to a engine, but the all the parts and mechanisms that make it all happen is what makes it complicated. Thank you very much for watching!

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Science & Technology

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• internal
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• flathead
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[VeryParanoidAndroid]

Well explained, took your time and made it clear so us noobs could follow, good job, thanks for taking the time to make it.

[fnaguitarplayer9]

@VeryParanoidAndroid thank you very much!! i tried to keep it as simple as possible, but technical enough to get the facts. thanks again, and thanks for watching!!!!!

[JBMSTRIKER71]

I am not going to lie I thought this was going to be a fucking joke but you actually made a really educational video man. All serious especially with what you had.

[fnaguitarplayer9]

@JBMSTRIKER71 haha well i'm glad you liked it haha thanks. thanks for watching!!!

[RandomUser978]

Awesome explanation. Thanks a bunch.

[fnaguitarplayer9]

@RandomUser978 thanks. no problem, thanks for watching!

[fnaguitarplayer9]

@Jenslilhomestead glad to help! haha i tried to keep it as simple as possible. no problem and thanks for watching!!

[Jenslilhomestead]

Very helpful. Even i understood it. Thanks alot.

[fnaguitarplayer9]

@shazrat2 Thanks! the animations don't explain step by step what is going on, just a visual. Glad my video helped! Thanks for watching!

[shazrat2]

Great video. This is much better than all the fancy animations people have made to explain this process. I finally understand it now.