Quote:
Originally Posted by aerohead
The transmission, driveline, and final drive together, eat 24% of the power. Very close to what CAR and DRIVER has calculated with, giving us insight into the reverse-engineering their data, presented for the 2015 GMC Yukon Denali long term test.  |
Everybody knows heat is energy. If you want a quick lesson in efficiency, place your hand, only very momentarily on a rear differential after driving at high speed over any distance past say 50? miles. It is amazing how much internal friction there must be to generate that amount of heat in such a massive unit that has a large surface area open to the moving air, at speed. Don't forget that heat directly starts from the energy in the gas tank.