Quote:
Originally Posted by ShadeTreeMech
a thought just occured to me concerning removing heat from the exhaust.
I don't claim to understand all of it, but while reading up on backpressure in exhaust systems, I read a somewhat technical article concerning the need to keep the exhaust as hot as possible to facilitate it moving down the pipe as efficiently as possible. To that end, some car makers will insulate the exhaust piping to keep it warm. I'm all for getting "free energy", but I am concerned about the cost of cooling the exhaust.
|
I haven't really given it a thorough "think," but if my recollection of the relationships between pressure, volume, and temperature is correct, if you can reduce the temperature of the exhaust as it travels along the tailpipe
without introducing a restriction, the pressure ought to be reduced as well. If we lower the temperature (and therefore pressure) more or less linearly between the muffler and the outlet, the exhaust flow ought to improve rather than otherwise. Maybe think of it as creating a partial vacuum at the exhaust tip.
Good thing to be aware of though.