All-wheel-drive (AWD) versions of Suzuki's new Wagon R, recently launched in Japan, are being equipped with GKN Driveline Torque Technology's Viscodrive® coupling.
The Viscodrive® coupling is a compact and lightweight unit that provides on-demand AWD capability and improved vehicle traction without the need for electronics or driver intervention. Additionally, it dampens undesirable driveline noise and vibration, and is reliable.
This product consists of friction plates submerged in silicone fluid. When the drive (front) axle loses grip the relative speed difference between the plates produces a shear stress that transfers torque from one plate to the other and redistributes it to the rear axle.
Graeme Walford, commercial and engineering director, GKN Driveline said: "Viscodrive® couplings are an important foundation of GKN Driveline Torque business. They are a  popular choice for ‘kei-cars’ in Japan." ‘Kei-cars’ (from "kei-jidosha" - ‘light automobile’) are cars with a maximum engine capacity of 660cc and power of 47kW (64bhp).
