Well, turbo-compounding is a different kettle of fish. That uses a geared connection from the turbine to help drive the crankshaft. Not used to compress the intake air.
One little paragraph in the B-24 book indicated some engines were turbo-supercharged. I’m gonna have to plead ignorance on the whole thing.
I think many engines were both turbo compounded and supercharged, so ultimately, the turbo was helping to drive the supercharger. Later on, they figured the geared connection to the crank could be eliminated giving us the modern turbocharger.
It looks like turbo compounding is making a comeback where a motor/generator is attached to the turbo shaft. Instead of bypassing exhaust through a waste gate to limit boost, the motor/generator is used as a generator to help return energy to the main battery of a hybrid car’s traction battery and it can also help drive the supercharger to help eliminate turbo-lag.
One of the last pre production aircraft engines(never made it into production ) was a Gnome -Fairy Turbo compounded H-12 engine (diesel ) the tutbines superseded it and they never looked back ,not thay efficient ,but all so much better for the applicaion .
Hey ,the turbine may not be completely dead in autos now ,there is a supposed hybrid sports car on the way that uses a micro turbine to keep the battery pack charged ,IMO hybrid is the wave of the future ,I told this to my Hydrogen power seeker cousin a few years back , keep in mind hybrid can consist of many things .
A small lightweight micro gas turbine extending the range of a plug-in hybrid makes a lot more sense to me than trying to build a mega-range electric only car with a battery that is so massive that it’s like you are hauling a concert grand piano with you every where you go.
A certain percentage of the power stored in a battery is consumed by just hauling that battery around with you and as you go for more and more range, that percentage gets higher and higher and approaches 100% as you get to driving what can best be described as a battery on wheels. When you reach that point, adding more battery means you are simply driving a bigger battery on wheels and the extra power needed to move the car cancels the extra battery capacity.
By settling for enough range to do daily commuting and using a micro turbine to power the car on longer trips, the electric power consumed would most likely be lower because the car can be lighter. Not to mention you could drive across the USA on the route you choose, not a route dictated by the availability of charging stations.
One of the biggest factors that has kept turbine power out of cars is that the thermodynamic efficiency of turbines falls off steeply as you throttle them down. I believe that the experimental Chrysler turbine car would suck down over a gallon an hour just sitting at a red light idling. As a battery charger, that drawback goes away, the turbine is either on or off and running in its thermodynamic sweet spot when it is on.
The only drawback to this concept is that it offends the electric car purists.
@B.L.E The Chevy Volt basically tries to do that. You can drive coast to coast with this vehicle if you are prepared to live with modest performance once the battery runs down.
However, a plug-in hybrid built like the Volt can meet nearly all transportation needs for the average citizen.
A Volt with a depleted traction battery can’t be any slower than the Toyota Yaris I own.
Found this in the CarTalk blogs:
http://bestride.com/blog/10-reasons-to-choose-a-manual-transmission/33755/
Ha Ha. Interesting that they used St. Cloud as the place for testing UPS drivers. Spee Dee delivery is headquartered there and you’ll see white Spee Dee trucks coming and going in droves there. Spee Dee and UPS compete pretty energetically.
@Bing
"Spee Dee delivery"
The same one where Mr. Mc Feely works?
Awesome! Tell him I said, "Hi!"
It must be a wonderful day in that neighborhood. 
CSA
Ed as he has taken to referring to it as 'snowflake'.Snowflake???!! That's just short of "My Little Pony" or something. A name like that might result in you being greeted to every ball bearing in the thing falling out and rolling away down the hill...
How about something more strength inspiring like Artica, Polar Bear, Abominable Snow Man or Mr Clean even…
@TwinTurbo It’s a 3 cylinder economy car…
More strength inspiring . . . for a 3 cylinder car?! It does have a nice little growl to the engine . . . kind of like when you go over somebody’s house and they’ve got a little puppy and he’s about as big as your foot but he runs over and bites your pants cuff and starts tugging on it and growling but his tail is wagging. You gotta admire his spirit . . .
“It does have a nice little growl to the engine . . .”
"It’s a 3 cylinder economy car… "
Loose heat shield!
CSA
3 cylinders…
What about Alvin and the Chipmunks?
“What about Alvin and the Chipmunks?”
The trivia question of the day (using Google to look it up is not fair!) is…
What was the REAL name of the guy who recorded the Alvin & The Chipmunks songs?
No, it wasn’t David Seville!
Yeah his name was Peppi and I hated that little dog that my girl friend had. Yip yip yip. Its been almost 50 years now so I suspect it long ago has been resting under a pine tree.
^
Nope!
Next!
Barak Obama?
;-]