On 12/04/2007, at 6:58 AM, Dan Minette wrote: >> >> Newer cars use less fuel to travel further than older cars. > > Lighter newer cars might...but I don't think the same sized new > cars. In a > real sense, a small car is more efficient than a large car, but > that's not > what I was thinking of. I was thinking of the energy requirements > of the > anti-pollution equipment on autos. As a result of this equipment, > the power > train is less efficient than it use to be.
No. There are small losses through the cat, and there are more losses if you have AWD, but engine management, direct injection, and materials have meant the net efficiency of drivetrains is far better. Except most of that seems to go into generating more power for the same engine capacity rather than using less fuel for the same power output, but they're still more efficient. Charlie _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
