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Yes to a small extent, needs something to power it though, engines tend to have trouble getting enough air in and little in expelling exhaust. An exhaust system, if designed properly will effectively scavenge the cylinder without anything else added. |
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The purpose of superchargers and turbochargers is to push more air into the combustion chamber, increasing compression and the effeciency of combustion. The change in induction effort at the piston is very small. Race engines frequently use exhaust systems tuned to 'extract' exhaust by using gas momentum and reflected pressure waves.
There is also surplus energy in the exhaust gas which may be used to run the turbocharger. |
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Not to mention this is baked by some old diesel engines that used exhaust scavenging superchargers, and has been posted here before. |
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Like [the dog's breakfast] mentioned, a good exhaust system will scavenge all by itself. The thing is, engines actually make more torque at low RPMs with a little bit of backpressure. So it isn't that the engineers of more restrictive exhaust systems on high performance cars aren't thinking, it's that engines dont always run best with no backpressure. Now if you can think of a good variable exhaust system, that will score all the points. |
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where is [acurafan07] when you need him? |
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More efficient? No. You have to get the power from somewhere. |
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HOLY CRAP, that was freaky. Conpletely unintentional |
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Usually I'm one of the first to comment on any new engine idea (unless it's mine). Too bad there aren't more of them. |
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