can someone tell me more about railway engines (deisel)how they are made & how they operate?

Question

are they exatly on the basic principle of a car/ transport bus, if so why are they faster than the car/ bus?

Answer 1

1 diesel engine drives a large alternator and in the wheels called "trucks art very large 3 phase electric motors [ one per Axel] to vary speed engineer changes voltage to motors with a rheostat [nowadays computer controls]
2 this is at least a double edged question who's answer will very with where you live.
a. the condition of the rails, in many places they arn"t safe for high speed travel[ U.S.] most countries pay more attention to keeping the rails in proper shape.
b.direct routing between points, rail companies got their land and built their tracks before the population exploded.
c. no stop and go traffic. train may slow down for a road crossing but it is the cars and trucks that must yield to a train.

Answer 2

Virtually all Diesel engine locomotives have a large Diesel engine driving an alternator which generates alternating current electricity. This is supplied to through a a complex control system to electric motors which drive the wheels. This system is also used in off-road heavy trucks in open-cut mines.

Trains can reach high speed because there are no other vehicles on any particular section of line at the time they are running over it. Also most railways are fenced off so there is little danger of hitting animals or people who might otherwise stray onto the tracks. A train hitting a person or a kangaroo or a sheep at 200kph could be derailed.

Some very early Diesel locos had gearboxes like cars but were found to be unsuitable for railway use because as the driver changed gears the loco would slow down, but the train would not, which meant the train would thump the loco in the rear and soon or eventually cause damage. Some railcars consisting of one or two units have manual gearboxes but these are rare and basically outdated.

Another version used in some smaller locos is the Diesel - hydraulic system in which the Diesel engine drives a pump which supplies hydraulic fluid, like brake fluid or automatic transmission fluid. to hydraulic motors which drive the wheels. This system seems to be fairly rare now but was once used for specialised shunting locomotives, not for main line trains.

Answer 3

In India diesel engines are manufactured at Diesel Loco Works, Varanasi and Diesel Loco Works in Chittaranjan. The cost of making a diesel loco is almost close to Rs.3 crores including its maintanence. You can visit these places with a special permission from the ministry of Railways and the embassy of your country in our country. In India they have certain codes for diesel engines.
For e.g.

ED WDM 3A
ED- Means Erode a place where the engine is usually stalled when it is idle
W means Broad Gauge
D means Diesel

Answer 4

most of the train engines today are diesel electric meaning there is a diesel motor making electricity to power 2 electric motors. elec. motors make huge amounts of torque at very low rpms ideal for pulling