Search results
Results from the WOW.Com Content Network
An example of a viscous coupling unit opened up The fluid inside the VC Completely disassembled The internal plates. A viscous coupling is a mechanical device which transfers torque and rotation by the medium of a viscous fluid.
ControlTrac II was a Ford four-wheel drive system based on a viscous coupling unit. The viscous coupling replaced the typical center differential used in four-wheel drive applications. The system worked normally in front wheel drive but in addition to the front wheels being driven, a shaft is powered that runs to the viscous coupling in the rear.
Thus its SI units are newton-seconds per square meter, or pascal-seconds. [1] Viscosity quantifies the internal frictional force between adjacent layers of fluid that are in relative motion. [1] For instance, when a viscous fluid is forced through a tube, it flows more quickly near the tube's center line than near its walls. [3]
A fluid coupling cannot develop output torque when the input and output angular velocities are identical. [7] Hence, a fluid coupling cannot achieve 100 percent power transmission efficiency. Due to slippage that will occur in any fluid coupling under load, some power will always be lost in fluid friction and turbulence, and dissipated as heat.
The viscous coupling between the two driven wheels ensures that both wheels turn at the same rate, providing torque to the wheel that is not slipping. Viscous couplings are also used to keep the front axle and the rear axle spinning at the same rate in four-wheel drive passenger automobiles.
For kinematic viscosity, the SI unit is m^2/s. In engineering, the unit is usually Stoke or centiStoke, with 1 Stoke = 0.0001 m^2/s, and 1 centiStoke = 0.01 Stoke. For liquid, the dynamic viscosity is usually in the range of 0.001 to 1 Pascal-second, or 1 to 1000 centiPoise.
A joint venture between U.S. electric pickup and SUV maker Rivian and Volkswagen is in talks with other automakers about supplying their software and electrical architecture, a senior Rivian ...
For the Celica, the original ST165 GT-Four of October 1986 had "Center Diff. Lock" with switch located near the hand brake, and starting from the facelift model of October 1987 came with transfer case contains a viscous coupling unit that provides 50/50 power distribution to the front and rear differentials at all times, as in the Previa All ...