Just came across this amazing web-site

[yidal8]

While doing a Google search on Turbocompounding , I found :http://www.histomobile.com .You can spend days , and days checking all the historical , technical , pictorial and other interesting information about automobiles .Incidently , Turbocompounding is using an exhaust driven turbine, as in turbocharger , to mechanically add horsepower to the crankshaft by way of gears , and couplings . This system was used on the old Douglas DC7 , and Lockheed Superconstellations . This added power, and reduced fuel burn per HP produced , allowed for the first time non-stop transatlantic flights in both directions in the fifties . This is also used in some marine , and truck engines .