Patent ID: 8387476
Filing Date: 2013-03-05
Classification: F16D,F16H,Y10T

Abstract:
1. A control system for a multiple clutch transmission, said transmission having at least three synchronizers, each synchronizer having an alpha pressure chamber and a beta pressure chamber opposed to said alpha chamber to alternately selectively synchronize an alpha gear or a beta gear with a rotating shaft, said control system comprising: a pressure source; a sump; a first multiplex valve having a first position allowing fluid communication of alpha and beta chambers for two synchronizers with said pressure source and diverting alpha and beta pressure chambers of remaining synchronizers to said sump, said first multiplex valve having a second position reversing the immediately noted above action; a second multiplex valve fluidly connected with said first multiplex valve having a first position connecting alpha and beta chambers of a selected synchronizer with said pressure source and alpha and beta chambers of a non-selected synchronizer with said sump, said second multiplex valve having a second position reversing the immediately noted above action; a first actuator regulator valve fluidly connected with said second multiplex valve for selectively connecting said alpha chamber of said selected synchronizer with one of said pressure source and said sump; and a second actuator regulator valve fluidly connected with said second multiplex valve for selectively connecting said beta chamber of said selected synchronizer with one of said pressure source and said sump.