Patent ID: 6116391
Filing Date: 2000-09-12
Classification: B60W,F16H,Y10T

Abstract:
A motor vehicle comprising a prime mover; an automated transmission shiftable into a selected one of a plurality of gears; a system for transmitting torque between said prime mover and said transmission, said system being operable to assume engaged and disengaged conditions; a hydraulic unit comprising a source of pressurized fluid including an accumulator, means for connecting said source with said transmission, and regulating means associated with said connecting means and operable to effect a planned selection of and shifting into one of said gears; and means for operating said system and for operating said regulating means, wherein said operating means comprises at least one proportional valve and a conduit connecting said proportional valve with said system and said regulating means comprises at least one selector valve provided in said connecting means downstream of said proportional valve as considered in the direction of fluid flow from said source to said transmission, said at least one proportional valve being arranged to control the pressure of fluid in said connecting means in a disengaged condition of said system and said at least one selector valve being arranged to determine the selection of a gear by said regulating means in said disengaged condition of said system.