Yamaha 2 stroke basics (Builder) - Post By BoatTest.Com
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@woopass250 good point, the so known "scavenge loss"
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@woopass250 That's because if they are still making them they are now direct injection. Only air with no fuel mixed in passes out the exhaust port. With direct injection they are now cleaner(especially in Nox emissions) than four strokes with the same power.
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so what stops the mixture from escaping out the exhaust port when the piston begins to compress?
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@133shinchan The only compression you can get while the exhaust port is open is caused by the pressure wave that can come back from the exhaust. This is limited however to specific rpm's
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@WaterFall1973 it's like that on a 2 stroke engine.....
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its okei, i didnt want to see the rest of te video anyway
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why is there two horses fucking in the related videos?
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Also love how it looks like it's compressing the mixture with an open exhaust port. Fail.
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@GeneraleRamon The expansion exhaust will only bounce back gasses @ the correct time when the rpm is right. So it doesn't solve the blowback.
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este es el video mas explicativo que vi hasta ahora, muchisimas gracias
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this video doesnt show the air fuel mix lost out the exhaust port when the pistons coming up
woopass250 2 years ago 46
@woopass250 for this reason a good 2T engine have an expansion exhaust
GeneraleRamon 1 year ago 14