CSSHEGEWISCH wrote: Diesel-electrics are not hybrids, an electric motor drive is the only method practicable at those horsepower ranges. Large open-pit mining equipment is also diesel-electric, straight mechanical drives won't work. Imagine how many clutches would be burned out over the course of a day.
Diesel-electrics are not hybrids, an electric motor drive is the only method practicable at those horsepower ranges. Large open-pit mining equipment is also diesel-electric, straight mechanical drives won't work. Imagine how many clutches would be burned out over the course of a day.
I am not sure what horsepower ranges you are talking about Paul but don't count these diesel hydraulics from Vossloh locomotives, Kiel, Germany, out at 2700 kW:
http://www.loks-aus-kiel.de/index.php?nav=1400732
greetings,
Marc Immeker
ValorStorm wrote:QUOTE: Originally posted by geeps I think they need to make Hybrid locomotive. What do you think? I think Diesel-Electric is the definition of hybrid...
QUOTE: Originally posted by geeps I think they need to make Hybrid locomotive. What do you think?
Actually, Green Goat is the definition of hybrid - and probably the most (fuel) efficient locomotive available today. If they can work out how to absorb regenerative braking to charge the on-board batteries, they could be even more efficient.
Chuck
I tried to sell my two cents worth, but no one would give me a plug nickel for it.
I don't have a leg to stand on.
Collin ,operator of the " Eastern Kentucky & Ohio R.R."
The Milwaukee road Electrics and other electrics are some of the most effecient!!
James
Well, if you were goin by Diesel loco's, i would say the GP7's and 9's are the most efficient, they've been around since 1953-59, and are still kickin on CN and CP and the CEMR's prime power is their 4 GP9rm's. For modern i would go for the GE GEVO's ES44AC (CPR) and the ES44DC (CNR) and the SD70ace and M-2.
The N&W Y-6b had a maximum thermal efficiency of 7%. It would be interesting to ascertain the thermal efficiency of D&H 1403, the only triple-expansion locomotive built, and that of the various French high-speed compounds.
The most effcient steamers built for passenger service
J-class, S1b Niagra, FEF-Northern
The most effcient steamers built for fast freight
N&W A-class, NKP Berkshire, you decide the other
The most effcient steamers built for heavy/mannifest freight
N&W Y6b, DM&IR Yellowstones, UP Big Boys, and maybe the C&O H8, although its tonnage rating was not much higher than a T1 2-10-4 or H7 2-8-8-2 despite being 100 tons heavier
Note: The N&W's big three were each part of the three categories of effiiciency, a credit to a railroad who built its own locomotives and had its own ideas about efficiency and designing locomotives for specific tasks, not just 'generic' tasks.