How Can I Know About Train Engine's Work
This locomotive is one of the best
known in the history of railways. It was a prototype, one of a series designed
by Robert Stephenson (1803–1859) between 1828 and 1830. During this time he
introduced several innovations which served to improve the design, performance,
and efficiency of steam-hauled transport. The locomotives were all built at the
Newcastle upon Tyne factory of Robert Stephenson and Co.
The rocket was not designed by George
Stephenson, as is so often thought because he was fully engaged in the building
of the Liverpool and Manchester Railway at that time. However, as innovations
were tried out by his son, Robert, in Newcastle, he was kept fully informed of
the progress. Each Alco Spares was built to the
order of coal mining companies anxious to try out the new technology as it was
made.
The ignition of diesel fuel pushes
pistons connected to an electric generator. The resulting electricity powers
motors connected to the wheels of the locomotive. A “diesel” internal
combustion engine uses the heat generated from the compression of air during
the upward cycles of the stroke to ignite the fuel. The inventor Dr. Rudolph
Diesel designed this type of engine. It was patented in 1892.
Diesel fuel is stored in a fuel tank
and delivered to the engine by an electric fuel pump. Diesel fuel has become
the preferred fuel for railroad locomotive use due to its lower volatility,
lower cost, and common availability.
The diesel engine
(A) is the main component of the
diesel-electric locomotive. It is an internal combustion engine comprised of
several cylinders connected to a common crankshaft. Fuel is ignited by the
intense compression, pushing the piston down. The piston’s movement turns a
crankshaft.
The diesel engine is connected to the
main generator
(B), which converts the engine’s
mechanical power to electrical power. The electricity is then distributed to
traction motors
(C) through circuits established by
various switchgear components.
Because it is always turning, whether
the locomotive is moving or not, the main generator’s output is controlled by
the excitation field current to its windings.
The modern diesel locomotive is a
self-contained version of the steam locomotive.
Like the electric locomotive, it has an electric drive, in the form of
traction motors driving the axles and controlled with electronic controls. It also has many of the same auxiliary
systems for cooling, lighting, heating, braking and hotel power (if required)
for the train. It can operate over the
same routes (usually) and can be operated by the same drivers. It differs principally in that it carries its
own generating station around with it, instead of being connected to a remote
generating station through overhead wires or a third rail. The generating station consists of a large
diesel engine coupled to an alternator producing the necessary electricity. A fuel tank is also essential. It is interesting to note that the modern
diesel locomotive produces about 35% of the power of an electric locomotive of
similar weight.
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