Limited Slip Differentials LSDs By Timothy Kwan Objective

Limited Slip Differentials (LSDs) By: Timothy Kwan

Objective • Explain what a limited slip differential (LDS) is • Types of LSDs and how they work

What is an LSD? • Prevent wheel slippage • Distributes torque to wheel that isn’t slipping • LSDs lock or slow down rotation of one output axel

Types of LSDs • 3 Main Types: – Clutch – Viscous Coupling – Torsen®

Clutch Type LSD • Locks up using clutches From driveshaft Gear shaft Pressure plate To right wheel Clutch plates To left wheel

Clutch LSD con’t Vehicle stationary Vehicle turning Straight line driving Pressure plate Clutch disk (not shown)

Viscous Coupling LSD • Locks up due to friction between fluid and plates To right wheel Viscous coupling From driveshaft To left wheel

Viscous Coupling con’t From driveshaft Viscous coupling unit Differential Stationary plates fluid Rotating plates (attached to shaft)

Torsen® LSD • Locks up using gears Worm gear From driveshaft To left wheel To right wheel Worm wheel

Torsen® LSD con’t

References: • http: //www. billzilla. org/diffs. htm • http: //www. autozine. org/technical_school/traction/t ech_traction_4 wd_2. htm • http: //www. arstechnica. de/auto/differential/bauarte n/viscokupplung. html • http: //www. popularmechanics. com/automotive/aut o_technology/1302716. html? page=4&c=y • http: //auto. howstuffworks. com/differential. htm