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1. (WO2018046827) METHOD FOR CALCULATING POSITIONS TO SYNCHRONISE A DUAL CLUTCH GEARBOX

Pub. No.:    WO/2018/046827    International Application No.:    PCT/FR2017/052335
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Tue Sep 05 01:59:59 CEST 2017
IPC: F16H 61/28
B60W 10/04
B60W 10/113
B60W 30/19
F16H 61/688
F16H 63/50
Applicants: PSA AUTOMOBILES SA
Inventors: SCHAEFFER, Eric
DESCHAMPS, Alexandre
Title: METHOD FOR CALCULATING POSITIONS TO SYNCHRONISE A DUAL CLUTCH GEARBOX
Abstract:
Method for calculating the positions of specific points of sleeves for synchronising a gearbox, said gearbox comprising two half-boxes, each controlled by a clutch, wherein, in a preparation phase for each engaged gear ratio of a half-box, the method applies a predetermined engine torque set point curve and, over this set point curve, engages gear ratios of the other half-box, while measuring and storing positions of specific points (120, 122, 124) of the synchronisation sleeves when these engagement steps take place; subsequently, during running phases of the vehicle, the method calculates forecast positions for the specific points (120, 122, 124) by carrying out a comparison with the stored positions of the specific points (120, 122, 124).