|
it has struck me that the rotary engine is quite
similar to the 2 cycle as far as exhaust noise. since some 2 cycle
engines use resonators I wondered why this approach isn't also used. last
week dr. chuck Williams spoke at the chapter 782 meeting, a life-time expert on
2 cycles. I couldn't get him to expound too much about exhaust, but found
it interesting that he suggested a muffler with a rotor inside, just like a
turbo, althought performing no work other than dampening the sound pulses.
has this approach ever been tried? maybe that old joke about muffler
bearings was true! since he was mostly experienced with racing
snowmobiles, he said they simply use very long exhaust pipes for noise
suppression, although not a big concern in the racing circuit. I have
tried looking up info on resonator design, but haven't come across anything
yet.
|