Wright Turbo-compound engine

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PTAirco

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Sep 20, 2003
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3,519
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Corona CA
For those of us who love reading this kind of stuff, this is a very interesting article on the use of turbo-compounding.

It's interesting to note that this was done over 60 years ago and very successfully and it is only now that engine manufacturers are seriously looking at this concept again. With just about every car and GA aircraft uselessly spewing out 20-25% of the fuel's energy through the exhaust, it's about time this technology was dusted off and improved upon.

http://www.enginehistory.org/Wright/TC Facts.pdf
 

nik.kruhmin

Active Member
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Dec 25, 2007
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37
Location
San Diego, CA
I was under the impression that turbocharger technology has advanced so much since then that the "blow down turbine" lost its advantage. They're lighter, more efficient, spool faster, and if the whole engine is built for it, you can boost a lot more than just enough to maintain sea level altitude.

Something like this might be good on engines that's can't handle the extra stresses of forced induction though.
 

PTAirco

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Joined
Sep 20, 2003
Messages
3,519
Location
Corona CA
Scania, Cummmins, Deere and many others are looking at and beginning to use a variation of this concept. It is ideally suited to engines that operate most of the time at the high end of their output, so it would be ideal for an aircraft engine. Many interesting variations on the theme too, such as coupling the turbine not directly to the engine but to a generator and others. All of which helps to get more out of every gallon of fuel we burn.
 
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