Why don't we use the downward motion of piston to compress

>>16081058
>what are shared crankpins

3/10
People are dumb but not that dumb

Sure, why not. I mean, it's not like that downward poison motion is being used to move anything important.

>what is a supercharger

File: ys175.jpg (63KB, 600x450px) Image search: [Google]

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With single cylinder engines this is possible. A brand of radio control airplane engines (YS) does this. The 2 down strokes of each cycle are used to compress air in the crankcase. Because of additional crankcase volume and other losses, they only achieve somewhere between 5 and 8 psi (or so I've heard). Pic related. They are awesome little engines.

>>16081058
it's called a supercharger op

>>16081058
What if it was a Dorito?

They do that. It's called a 2 stroke engine.

File: 2-Stroke_Engine_ani.gif (284KB, 200x202px) Image search: [Google]

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Here's a gif

File: c43.jpg (41KB, 600x600px) Image search: [Google]

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>>16081058
>he use cylinders

>>16083523
>>16083529

2 strokes only "supercharge" with a tuned pipe. The volume they compress in the crankcase is equal to the volume of the stroke, so it's not like it can force more air in the cylinder than the amount of air in 1 full stroke of air at atmospheric pressure. Nawmean dawg?

>>16083556

A tuned pipe can allow extra air/fuel to fill the exhaust then get crammed back into the cylinder by the pressure wave.

Yes, and the pipe, called an expansion chamber, is as integral to a 2 stroke as a camshaft is to a 4 stroke.