IMPROVEMENTS IN OR RELATED TO CONTINUOUS VARIABLE RELATION TRANSMISSIONS.

摘要

A CONTINUOUSLY VARIABLE TRANSMISSION OF RELATION IS PRESENT, INCLUDING A UNIT OF VARIATION OF THE RELATION ("VARIATOR"), AND AN EPICYCLIC UNIT THAT HAS THREE CONCENTRICALLY ARRANGED OUTPUTS. TWO OF THESE OUTPUTS ARE RESPECTIVELY CONNECTED IN A FIXED RELATION TO THE OPPOSITE ENDS OF THE DRIVE, SO THAT THE RATIO OF THE DRIVE ALWAYS CHANGES, THE SPEED OF ONE OF THESE OUTPUTS ALWAYS INCREASES AND THE OTHER ONE DECREASES. THESE TWO OUTPUTS ARE ALSO CONNECTED THROUGH AN APPROPRIATE GEAR AND SUITABLE CLUTCHES TO THE CVT OUTPUT SHAFT. SUCCESSIVE OPERATING REGIMES ARE OBTAINED, SO THAT THE TOTAL RANGE OF RELATIONSHIP OF THE CVT IS EXTENDED, ALTERNATIVELY CONNECTING EACH OF THE TWO EPICICLICAL OUTPUTS TO THE CVT OUTPUT. RELATIONSHIPS AND OTHER PARAMETERS ARE CHOSEN SO THAT REGIME CHANGES ARE SYNCHRONOUS.