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DIFFERENTIAL GEAR TRAINS
Team 25
Under supervision of
Prof. Mostafa Helaly
Eng. Mohamed Nabil
OUTLINES
Introduction & Definition
Applications
Mechanism Design & Kinematics Analysis
Maintenance
Lubrication
What Is DIFFERENTIAL?
Primary device in rear & 4 wheel
drive systems in automotive
technology
The main function of the
differential is to allow these
wheels to turn at different
torques & RPM, while receiving
power from the engine.
ADVANTAGES
Transfers power from
driveshaft to the wheels.
Provides final gear reduction.
Splits amount of torque going
to each wheel.
Allow the wheels to rotate at
different speeds in turns.
Increase the rate of tire
wear.
Lack of safety in the
course of the vehicle.
Loss part of the engine's
ability.
Disadvantages
What happens if the wheels are on the
same axle?!!
Increase the rate of tire wear
Increases of safety in the course
of the vehicle
Loss part of the engine's ability
APPLICATIONS
Automotive Industry
Pumps
COMPONENTS
• Pinion Drive Gear
• Ring Gear
• Side/spider gears
• Differential case assembly
• Rear drive axles
• Rear axle bearings
• Axle housing
HOW IT WORKS?!
TYPES OF DIFFERENTIAL
1- Open Differential
2- Closed Differential
3- Limited Slip Differential
LUBRICATION
Parameters.
Effects of wrong choice of the
oil type.
Examples for lubrication oils
used.
Steps of the lubrication
process.
PARAMETERS
 Excellent time to change gear fluid is when
the differential has to be drained for axle
service.
 The oil must be able to withstand the
shocks and loads created by the transfer of
engine horsepower and torque to the
wheels.
 A major component of this high-pressure
lubricant came from sperm whales.
 These compounds have since been
replaced with more modern manufactured
equivalents.
CONSIDERATIONS
1- Proper weight, or viscosity.
2- GL rating
the best path to take is to use only what
is specified for your differential.
3- the requirements of the limited slip, or
traction-sensing differential.
An LSD without these special lubricants
will at best not work correctly, and at
worst fail outright, ending up costing a
bundle to rebuild and repair.
WRONG CONSIDER. EXAMPLES
Filling up the case
with the wrong gear
oil can ultimately
add up to an
expensive guess.
Sulfur compounds used
in extreme pressure
lubricants smell either
like rotten eggs or
worse depending on
additive concentration.
MOBIL LUBRICATION
THANKYOU!
 Team members:
1- EsraaTarek Mohamed No.36
2- Esraa Abd ElKader Mohamed No.37
3- Dalia Mahmoud ElGhayesh No.72
4- Dina MohamedYounes No.74
5- Sabreen Abd ElHamid Ibrahim No.89
6- Aly Mohamed Mohamed No.103
7- Mohamed Mahmoud Mahfouz No.168

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Differential Gear train

  • 1. DIFFERENTIAL GEAR TRAINS Team 25 Under supervision of Prof. Mostafa Helaly Eng. Mohamed Nabil
  • 2. OUTLINES Introduction & Definition Applications Mechanism Design & Kinematics Analysis Maintenance Lubrication
  • 3. What Is DIFFERENTIAL? Primary device in rear & 4 wheel drive systems in automotive technology The main function of the differential is to allow these wheels to turn at different torques & RPM, while receiving power from the engine.
  • 4. ADVANTAGES Transfers power from driveshaft to the wheels. Provides final gear reduction. Splits amount of torque going to each wheel. Allow the wheels to rotate at different speeds in turns.
  • 5. Increase the rate of tire wear. Lack of safety in the course of the vehicle. Loss part of the engine's ability. Disadvantages
  • 6. What happens if the wheels are on the same axle?!! Increase the rate of tire wear Increases of safety in the course of the vehicle Loss part of the engine's ability
  • 8. COMPONENTS • Pinion Drive Gear • Ring Gear • Side/spider gears • Differential case assembly • Rear drive axles • Rear axle bearings • Axle housing
  • 10. TYPES OF DIFFERENTIAL 1- Open Differential 2- Closed Differential 3- Limited Slip Differential
  • 11. LUBRICATION Parameters. Effects of wrong choice of the oil type. Examples for lubrication oils used. Steps of the lubrication process.
  • 12. PARAMETERS  Excellent time to change gear fluid is when the differential has to be drained for axle service.  The oil must be able to withstand the shocks and loads created by the transfer of engine horsepower and torque to the wheels.  A major component of this high-pressure lubricant came from sperm whales.  These compounds have since been replaced with more modern manufactured equivalents.
  • 13. CONSIDERATIONS 1- Proper weight, or viscosity. 2- GL rating the best path to take is to use only what is specified for your differential. 3- the requirements of the limited slip, or traction-sensing differential. An LSD without these special lubricants will at best not work correctly, and at worst fail outright, ending up costing a bundle to rebuild and repair.
  • 14. WRONG CONSIDER. EXAMPLES Filling up the case with the wrong gear oil can ultimately add up to an expensive guess. Sulfur compounds used in extreme pressure lubricants smell either like rotten eggs or worse depending on additive concentration.
  • 16. THANKYOU!  Team members: 1- EsraaTarek Mohamed No.36 2- Esraa Abd ElKader Mohamed No.37 3- Dalia Mahmoud ElGhayesh No.72 4- Dina MohamedYounes No.74 5- Sabreen Abd ElHamid Ibrahim No.89 6- Aly Mohamed Mohamed No.103 7- Mohamed Mahmoud Mahfouz No.168