Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – Speed responsive
Patent
1994-05-05
1996-06-18
Schoeppel, Roger J.
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
Speed responsive
474 18, 477 44, 180251, F16H 6100
Patent
active
055272258
ABSTRACT:
A full time four-wheel drive system for a vehicle is described which utilizes a unique torque distributor subassembly which provides a torque differentiation function as well as a speed ratioing function, thereby permitting utilization with a torque transmitting subassembly which is greatly simplified relative to a conventional transmission. The torque distributor subassembly includes an input shaft for receiving output torque from a torque transmitting subassembly of a vehicle, a plurality of output shafts and means for connecting the input shaft to each of the output shafts. The connecting means comprises a plurality of continuously variable belt drives, each having a drive pulley mounted on the input shaft and driven thereby and a driven pulley mounted on one of the output shafts with the pulleys carrying a belt therebetween. Each pulley comprises a pair of sheaves which are axially moveable in relation to one another. The pair of sheaves of each pulley are caused to shift axially relative to one another by an electronic control system which is responsive to divide torque among the output shafts in a predetermined relationship and to further ratio speed between the input shaft and each of the output shafts in a predetermined relationship. The system operates to substantially maintain these predetermined relationships during normal operation of the vehicle, for improved vehicle handling, stability and feel.
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Dana Corporation
Schoeppel Roger J.
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