Motor vehicles – Having four wheels driven – With differential means for driving two wheel sets at...
Patent
1990-10-16
1992-01-14
Marmor, Charles A.
Motor vehicles
Having four wheels driven
With differential means for driving two wheel sets at...
180233, 74421R, 475 85, 475 87, 192103F, B60K 1735, F16D 4328, F16D 25063
Patent
active
050801872
ABSTRACT:
A driving power transmission system for transmitting a driving power to front tires and rear tires, wherein a torque transmission device is disposed within a drive line for controlling transmissive torque transmitted to the tires. The torque transmission device is provided with a rotational housing to which a driving power from an engine is applied, a cylindrical shaft which is drivingly connected to the tires. The housing receives a clutch mechanism for transmitting a rotational torque from the housing to the cylindrical shaft, a piston located adjacent to the clutch mechanism and a pressure generating mechanism having an input rotational shaft for generating a pressure so as to actuate the clutch mechanism through the piston. The torque transmission device further provided with a differential speed amplifying mechanism connected to the housing and the cylindrical shaft for amplyifying a rotational speed difference therebetween in order to rotate the input rotational shaft of the pressure generating mechanism at an amplified speed. When the rotational speed difference occurs between the housing and the cylindrical shaft, the speed difference is amplified by the amplifying mechanism and then applied to the pressure generating mechanism. As a result, a large pressure is quickly generated and is applied to the clutch mechanism via the piston in order to actuate the clutch mechanism.
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Asano Hiroaki
Haga Kyosuke
Kagen Alan M.
Marmor Charles A.
Toyoda Koki Kabushiki Kaisha
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