On 08/02/2010 04:55 PM, Stephen Russell wrote: > On Mon, Aug 2, 2010 at 4:42 PM, Leland Jackson<[email protected]> wrote: > > >> Most trains are still powered by diesel, especially freight trains or >> train that haul truck beds. >> > -------------- > > Nope. The power that spins the wheels on a freight train is from > battery. Those are recharged from diesel motors, but the train is an > electric motor powered beast. >
I'm sure there is reason for using this type of system, whereby a diesel engine is used to generate electricity, which is stored in batteries for later use in an electric engines, but it seem a bit inefficient to me. I guess the diesel engine and electric engine are in operation simultaneously. Perhaps it operates more like the hybrid car. I vote for a perpetual motion machine to run our cars LOL , but that violate a few law of physics: #---------------------------- Excerpt: The lure of perpetual motion has always attracted inventors, and despite the universal scientific view that they are impossible, many people still try to build perpetual motion machines. The most commonly contemplated type of perpetual motion machine is a mechanical system which (supposedly) sustains motion indefinitely, despite losing energy to friction and air resistance. This violates the first law of thermodynamics, (eg conservation of energy). A second type of perpetual motion machine is one which does not violate conservation of energy, but produces work by extracting heat from a lower temperature source, (egEntropy), thereby cooling them down further, and converting the heat energy into mechanical work. Such machines are forbidden by the second law of thermodynamics. http://en.wikipedia.org/wiki/Heat #--------------------------------- Regards, LelandJ > > >> High speed passenger trains are electrically powered. >> >> http://en.wikipedia.org/wiki/Train >> >> Trains in the USA are not a relevant today as they were, say 50 years >> ago. The vast majority of good in the USA are now hauled by 18 wheelers >> of which 9 out of 10 run on diesel. >> > ------------------- > And how do you think the crap from China gets to Chicago? Boat to > Truck? hahahaha Boat to train to truck is how it goes. > > One of the spouses in the church choir is a diesel mechanic with the > rail yard in town and told me that is how it is today. I'll take it > from the guy who fixes them over wikipedia. > > > > _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://leafe.com/mailman/listinfo/profox OT-free version of this list: http://leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/[email protected] ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
