Diesel Train Drive System Assignment

DIESEL TRAIN DRIVE SYSTEM ASSIGNMENT
[Document subtitle]
[DATE]

Table of Content
1. Automotive Type Transmission
2. Component Torque and Speed
3. Layout of Locomotive
4. Main Gearbox ratio selection
5. Calculation of Tractive effort in each gear
6. Calculation of acceleration
7. Plot between Speed & distance
8. Requirements met & Improvements
9. The three fundamental drive systems
10. Reference
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Automotive Type Transmission (R, et al., 2015):
Differential: The differential is a device that splits the engine torque two ways, allowing
each output to spin at a different speed. The differential is found on all modern cars and
trucks, and also in many all-wheel-drive (full-time four-wheel-drive) vehicles. Differential
helps in turning the drive wheels at different rpm while the vehicle takes a turn Differential
gear, in automotive mechanics, gear arrangement that permits power from the engine to be
transmitted to a pair of driving wheels, dividing the force equally between them but
permitting them to follow paths of different lengths, as when turning a corner or traversing an
uneven road. Wheels receive power from the engine via a drive shaft. The wheels that receive
power and make the vehicle move forward are called the drive wheels. The main function of
the differential gear is to allow the drive wheels to turn at different rpms while both receiving
power from the engine. When a large vehicle has to curve on road, outer wheels cover more
distance as compared to inner wheels, so in order that wheels do not skid, we use Differential.
It consists of no. of gear wheels like Crown Wheel or Ring Gear and Tail Pinion. Tail pinion
is mounted after propeller shaft. It drives Ring Gear which consists of Sun and planet gear
assembly. So whatever the type of curve is, Lift or Right Turn, that respective shaft, precisely
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Vehicle
Power Plant
Clutch Gear box Differential
Driven Wheal
Drive Shaft
Drive Shaft
Driven WhealDriven Wheal
G1150 Gearbox

B.P. shaft, revolves faster, resulting in that wheel revolving faster. Differential can be used in
Rear or Front Axle or in both, depending on Drive, 2 wheel Front or Rear Drive or Four
wheel Drive.
Gear Box: The gear box is the second element of the power train in an automobile. It is used
to change the speed and torque of vehicle according to variety of road and load condition. A
gear box changes the engine speed into torque when climbing hills and when the vehicle
required. Sometimes it is known as torque converter. Provide the torque needed to move the
vehicle under a variety of road and load conditions. It does this by changing the gear ratio
between the engine crankshaft and vehicle drive wheels. Gearboxes are nothing but gear
trains mainly for power transmission from the power producing device to the vehicle's
wheels, reducing torque increasing speed, and maintaining the speed and torque of the
machine shaft and transmission shaft. The gearbox is a set of gears packed into a casing. The
gears inside are of different sizes and have different number of teeth. This is because, the
gearbox can then cater to the demand of varying speed and torque. Each gear has a specific
speed and torque response. It is combination or a set of gears meshing each other & mounted
on shafts with bearing to support them. It can be used either to reduce or increase the speed
ratio of input shaft. The housing will have usually two halves bolted to each other & uses a
lubricating oil filled inside to reduce heat due to friction caused by meshing of gears. This is a
general concept of gear box basically to transmit power or rotation from one drive to another.
Clutch: A clutch is a mechanical device which engages and disengages power transmission
especially from driving shaft to drive shaft. The principle behind working of clutches
(friction) is that no torque/power gets transmitted until both the friction plates touch each
other. One friction plate is bolted to flywheel & the other is movable over the crankshaft. Its
function is to transmit the torque from the engine to the drivetrain, smoothly deliver the
power from the engine to enable smooth vehicle movement, Perform quietly and to reduce
drive-related vibration. The clutch connects the engine to the wheels and when we step on
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