Diesel engines do not run on glow plugs, they run on diesel fuel which is ignited by the heat of compresion. The glow plugs are only used for starting when it is very cold.
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A train engine requires about a hundred litres of fuel to get it started.
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.
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.
Engines may be left idling to maintain important safety related functions such as maintaining engine temperature, air pressure for the brake system, the integrity of the starting systems, the electrical system and providing heating or cooling to a train's crew and/or passengers.
Unlike a steam locomotive, diesels could also operate “back-to-back” with a cab facing in either direction. With an MU-equipped cab unit (or “A Unit”) on each end, yard crews did not need to turn them, saving the railroad time and money.
Power plant capacity is far greater than any individual locomotive uses, so electric locomotives can have a higher power output than diesel locomotives and they can produce even higher short-term surge power for fast acceleration.
Intercity 125The stalwart of the British rail network merits its place on the list by being the fastest diesel train in the world, a record it achieved in 1987 and still holds today for travelling at a speed of 148 mph. Development of the 125 started during the 1960's and the first train entered service in 1976.
And the main reason for that is safety. Locomotive engineers are required to honk every now and then, which is written down in the regulations called the Final Rule on the Use of Locomotive Horns.
Old diesel locomotives have been scrapped and auctioned in the past after they had completed their codal life and were found uneconomical to operate. These locomotives were dismantled and auctioned piecemeal.
While many of us change our car tires every 50,000 miles or so, Metro rail wheels can travel as far as 700,000 miles before they need to be replaced. Good thing because changing the wheels on a single rail car can take more than a week, depending on the design of the car.
A caboose is a crewed North American railroad car coupled at the end of a freight train. Cabooses provide shelter for crew at the end of a train, who were formerly required in switching and shunting, keeping a lookout for load shifting, damage to equipment and cargo, and overheating axles.