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Super dis-charger for two stroke engines

 like a supercharger, but on the exhaust side
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2 stroke engine's have a theoretically superior power to weight ratio, but they suffer from exhaust back-pressure, especially at high RPMs. "Tuned" exhaust systems can help, but typically result in a narrow power band.

My idea is for a supercharger type engine driven fan in the exhaust system. Creates a nice vacuum to suck that nasty exhaust gas right out of the cylinders, consequently also helping to pull more fuel-air mixture in.

—ServoMan314, Jul 25 2008

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       this would worsen the two stroke's problem with fuel efficiency (by pulling more unburned fuel-air mixture into the exhaust system). And the weight of the contraption would kill your precious power/weight ratio. And the hot, dirty and corrosive exhaust would destroy the seals in the supercharger. But I guess thats why this is on the HALFbakery...
—Alpharaul, Jul 25 2008
   

       for more jollies, add an afterburner instead.
—sninctown, Jul 25 2008
   


 

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