A Unique way Showing How a 2-Stroke Chainsaw Engine Works (Cutaway Chainsaw)
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Published 2023-11-28
The compression and ignition strokes start the process inside the engine. The fuel-air mixture in the cylinder is compressed as the piston rises. This mixture is subsequently ignited by a spark plug, producing a flaming explosion that exerts tremendous force on the piston. The chainsaw gets its power from this downward action. Precision cutting of wood is made possible by the crankshaft being turned by the piston's descent.
The 2-stroke engine doesn't spend a stroke on venting burnt gases, though, which is the twist. Rather, the exhaust stroke is the upward motion of the piston, which forces the exhausted gases out of the cylinder through ports near the top. The entering fuel-air mixture is drawn into the crankcase concurrently. The cycle is repeated when the piston rises again and compresses this new mixture. Chainsaws are an essential tool for both outdoor lovers and lumberjacks because of their clever design, which produces raw power despite being less fuel-efficient and more polluting than 4-stroke engines.
All Comments (21)
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Great way to explain the 2 stroke cycle. I totally understand it now. Only took 68 years for the right person to teach me. Lol
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Craig, this short video is totally on point. You have a unique gift of explaining the extremely complicated topic of compression/fuel/spark/combustion in its timing and function while making it understandable for lesser knowledgeable men like myself. You are giving us incredible content. Thank you for your gift of teaching.
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Thanks lots for clear explanation! I was taught this aged 11 by our science-master. You brought it all back.🙂
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Thank you, the best explanation I saw on YouTube.
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Brilliant. Thank you so much for the clear and concise explanation. You're an excellent educator!
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This is the best explanation of a 2 stroke I have seen. Watching was a good use of my time.
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Thank you,I have used 2 strokes all my life (70'splus) always wondered how they worked.Brilliant explanation 🤔.
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Best mechanical videos, hands down 🏆
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Hello Craig, thanks for this excellent video, it must have taken some effort to make it and I only wish I had had this video to show to the Grandchildren some years ago whilst trying to explain how two strokes work (and upside down too 😊 , diaphragm carburetter) as they always showed great interest in our garden tools. I'll pass on the link , if you don't mind, and they can show their children when the time comes 😊. One wish would be to have all these videos shown in technical classes in all schools because Boys especially are fascinated by this type of mind broadening knowledge 🤔 Best Regards, Ian 👏👏👏 😊
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Another great one,Mr. Craig. Your animated drawings along with dialog makes visual understanding easy. Thanks
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Clearest explaination I've seen. Excellent video. Thank you.
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An excellent demonstration and explanation !
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Outstanding example. Thanks!
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Your videos are excellent. Well done
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I'm 64 years old and never understood how the process worked, now I do. Thanks for this and your simple explanations. Your ignition coil video got me to thinking and sure enough, the coils on my 15 year old field and brush mower were old not producing as strong as a spark as should be. The 15HP v-twin Kawasaki runs and idols like new again. Last winter the snowblower attachment wasn't moving snow like it used to, I'm guessing peak HP dropped 4 to 5 HP. Its a walk behind machine with a brush mower attachment as well. It has a 26" blade that cuts just about anything using 10HP or less so I didn't notice the power dropping off. I was trying to smooth out the idol with carb cleaner the entire summer before winter, " I don't run it much " I have riding lawn mowers. Anyway, thanks again.
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Another great learning session!
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I am so happy I found this channel. This is incredible as a showcase and explanation
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Absolutely amazing, thank you !!!
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Your videos are amazing I can follow your explanations easily
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Amazing video
