Viscous clutch and associated electromagnetic coil, method, electromagnetic coil assembly and method for operating a viscous clutch

摘要

Is a viscous clutch (20) comprising an entry member (26),An outgoing member (24),A working chamber (30) defined between the input and the outgoing member, a reservoir (28) to retain a supply of a shear fluid, a valve (32) which controls a flow of shear fluid between the reservoir and the working chamber over a circle Fluid that connects in a fluid way the reservoir and working chamber, a mancal (48) and an electromagnetic coil (34) sustained by the mancal. The electromagnetic coil includes both coil housing (34 -1) and coiling (34 -2) which forms multiple turns within an interior volume (34 -3) of the coil accommodation,Where the coil accommodation has a step configuration to accommodate at least partially the bearing within a first step (34 -4). Selective energization of the electromagnetic coil acts the valve.