The life expectancy of diesel-electric and electric locomotives is expected to be similar—about 25 years. Both types of motive power are subject to technological obsolescence.
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Many locomotives can last 30–40 years, depending on the maintenance done on them.
What is the life expectancy of a diesel locomotive? Back in the early days of dieselization (1940's and 1950's) the rule of thumb was 15 years.. and most first generation diesels operated for about that many years. but now 20-30 years is closer to average.
The SD45s were good, but not enough for the railroad. Union Pacific reached out to EMD for more power, and the result was the behemoth EMD DDA40X. Often cited as both the largest and most powerful diesel-electric locomotive ever built, the 98-foot, 5-inch, 475,830-pound machine is staggering.
The “Tom Thumb” has been known as the first successful American steam locomotive. It hauled passengers until at least March 1831 but was never placed into regular service. The “Tom Thumb” was salvaged for parts in 1834.
Fuel Tank. This huge tank in the underbelly of the locomotive holds up to 5,500 gallons (20,820 liters) of diesel fuel, plus an additional 300 gallons (1,135 liters) of coolant, and 250 gallons (946 liters) of engine oil.
Santie Oil stocks train engine oil in 40–60-gallon drums or 40–260-gallon totes to help diesel mechanics keep locomotives in top condition. The Federal Railroad Administration requires train engine oil to be changed every 180 days (formerly 92 days), and the time may be extended based on the oil's condition.
When it's moving at 55 miles an hour, it can take a mile or more to stop after the locomotive engineer fully applies the emergency brake. An 8-car passenger train moving at 80 miles an hour needs about a mile to stop.
In temperatures below 40 degrees Fahrenheit, the engine has to be kept warm for engine fluids to work properly, as antifreeze cannot be used in locomotive engines. Engines are also kept running to provide air conditioning or heat for the crew, which may be aboard even if the train is idling in a yard.
Most yard-switching and short-haul locomotives are equipped with diesel engines ranging from 600 to 1,800 horsepower; road units commonly have engines ranging from 2,000 to 4,000 horsepower.
For a fuel cost of $0.84 per liter of diesel ($3.17 per gallon) (AAR (2012b)), this results in an average running fuel cost of $185 per locomotive-hour. If actual train and operation data are available, energy models or rail simulators may provide more accurate fuel use values for specific conditions.
Idling switchers use between 3 and Il gallons of fuel per hour depending on the ambient temperature. If a switcher idles 12 hours a day in warm weather and burns 3 gallons of fuel per hour, it would consume 36 gallons of fuel per day.
The Union Pacific locomotive, known as Big Boy 4014, is the largest locomotive ever constructed. It just rolled in to Southern California after a massive restoration project. Thousands of people welcomed the largest steam locomotive ever constructed as it made its way back to Southern California Wednesday.