Power train

Details Power train Power train

1995-12-14

1997-09-16

Schoeppel, Roger J.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Load responsive

474 28, 477 46, F16H 6100

Patent

active

056674481

ABSTRACT:
A power train for use in motor vehicles has an infinitely variable transmission with two adjustable sheaves, an endless flexible torque transmitting element trained over the sheaves, and at least one hydraulic adjusting unit for each of the sheaves. The adjusting units receive pressurized fluid from a pump and the pressure of such fluid, and hence the extent of frictional clamping engagement between the sheaves and the flexible element, is regulated by a torque sensor including a plenum chamber with an outlet having an effective cross-sectional area which is variable in dependency upon variations of torque being applied to the torque sensor by the engine of the vehicle. The energy of fluid leaving the plenum chamber is used to operate a jet pump which draws fluid from a source for lubrication and/or cooling of the transmission and/or one or more clutches forming part of the power train.

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patent: 5046991 (1991-09-01), Friedmann
patent: 5169365 (1992-12-01), Friedmann
patent: 5217412 (1993-06-01), Indlekofer et al.
patent: 5295915 (1994-03-01), Friedmann

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