| 摘要 |
The temperature-controlled fluid coupling for the fan of an internal combustion engine comprises two coupling parts (3, 7) rotatable in relation to one another about a common axis (5) of rotation, while a working chamber of a first coupling part (7) carrying fan blades (9) encloses the second coupling part (3), which is driven by the internal combustion engine. Between mutually adjacent faces of the working chamber (13) and of the second coupling part (3) several shear gaps (25, 27), filled with shear fluid in the operating condition, for the transmission of the drive torque extend between different radii. The width of the shear gaps (25) is dimensioned in dependence upon the radial distance from the axis of rotation, and increases with increasing distance. In this way a more uniform shear loading of the shear fluid can be achieved. The disengagement time of the fluid coupling is reduced. <IMAGE> |
