Why does the Big Boy travel with a diesel?

If the diesel engine referenced is the modern diesel electric locomotive that has been accompanying 4014 in its travels, my understanding is that Union Pacific utilizes it to assist with overall fuel efficiency and to provide regenerative braking. This helps with operating costs and provides a better level of safety.



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The Big Boys were built for power. They did the work of three smaller engines, pulling 120-car, 3800 ton freight trains at forty miles per hour in the mountains of Utah and Wyoming. With power, though, comes weight - larger cylinders, pistons, drive rods, boiler and firebox.

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Yes, locomotive engines typically have a toilet, also known as a lavatory or restroom, for the use of the crew members who operate the train.

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4014 restoration cost, but Wrinn estimated at least $4 million based on similar restorations.

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Rather, the term is more specific: A freight train can move one ton of weight about 450 miles on a single gallon of gas. To match this mileage, a one-ton car would have to get 450 mpg, and a two-ton vehicle would have to get 225 mpg. To car owners, this seems unbelievable. How can railroads do it?

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While modern trains won't litter the tracks with human excrement, the traditional method did just that. This is what was known as a hopper toilet. It could either be a simple hole in the floor (also known as a drop chute toilet) or a full-flush system.

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Crews on the road typicaly start at there home terminal when they are called and work a particular route to the away terminal where they rest and wait for there call for a train headded back to it's home terminal. At the away terminal the railroad supplys houseing either in a motel or sometimes in a company dorm.

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Modern locomotives are air conditioned but many older ones are not. Individual freight cars may be refrigerated or heated, depending on the needs of what they carry.

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Hydrogen-powered fuel cells, combined with batteries to store electricity, would be a zero-emissions solution to replace the diesel-electric locomotive, Moslener says.

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The Centennials were the largest diesel-electric locomotives ever built. Actually comprising two engines on one frame, they delivered 6,600 horsepower.

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The Union Pacific Centennial is the largest and most powerful diesel locomotive ever built.

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