Limited Slip Differentials

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Limited Slip Differentials - PowerPoint PPT Presentation

Limited Slip Differentials

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1. Limited Slip Differentials Presented by: Jacky Lau Block: 8M-I

2. Objective: • investigate the use, way of function, and design of LSDs • understand LSDs’ role in the performance of modern cars Limited Slip Differentials (LSD), presented by Jacky Lau

3. Wheel speeds in a car • car wheels spin at different speeds • especially in turns • speed = distance / time http://isobe.typepad.com/photos/uncategorized/041213_wheel_tracking.jpg Limited Slip Differentials (LSD), presented by Jacky Lau

4. What does a differential do? • to aim the engine power at the wheels • to act as the final gear reduction in the vehicle, slowing the rotational speed • to transmit the power to the wheels while allowing them to rotate at different speeds Limited Slip Differentials (LSD), presented by Jacky Lau

5. Without differentials, what will happen? • wheels would be locked together, forced to spin at the same speed • difficult to turn • tires and axle components will experience heavy stress Limited Slip Differentials (LSD), presented by Jacky Lau

6. Differentials- definition and location • Definition: a device that splits the engine torque two ways, allowing each output to spin at a different speed. http://auto.howstuffworks.com/differential2.htm Limited Slip Differentials (LSD), presented by Jacky Lau

7. The LSDs (positraction) • clutch-type LSD, the viscous coupling, locking differential and Torsen differential • most common type : clutch http://www.club4ag.com/faq%20and%20tech_pages/limited_slips_differential_101.htm http://auto.howstuffworks.com/differential8.htm Limited Slip Differentials (LSD), presented by Jacky Lau

8. LSDs (continued) • viscous coupling – often used in AWD cars, linking the rear and front wheels • locking – serious off-road vehicles http://auto.howstuffworks.com/differential10.htm Limited Slip Differentials (LSD), presented by Jacky Lau

9. References • http://www.club4ag.com/faq%20and%20tech_pages/limited_slips_differential_101.htm • http://auto.howstuffworks.com/differential10.htm • http://www.houseofthud.com/differentials.htm • http://truckworld.tenmagazines.com/How-To-Tech/Lockers-Differentials/4x4Lockers-Diffs.html • http://isobe.typepad.com/robotics/