Since MR fluids have a very high yield stress they can be used to control the transmission of torque in rotating machinery too. For example, they may be used in an automotive powertrain to transmit torque from the engine to the transmission and the vehicle. The following figure (fig 9) shows a 3D schematic of the possible location of the MRF clutch in an automobile. The MR sponge clutch may be used to provide launch control of an automobile thereby achieving smooth vehicle launch.
Fig 9 A 3-D cut view of the MR sponge clutch
Fig 10 Assembled MRF sponge clutch
Fig 11 MR Sponge Clutch Testing
Fig 12 MRF sponge clutch test results