Manual download

multitronic The name multitronic stands for the new The CVT concept improved by Audi is based variable automatic gearbox developed by on the long established principle of the Audi. “chain drive transmission”. According to this The variable automatic gearbox is commonly principle, the reduction ratio between the known as the CVT gearbox. shortest and the longest ratio can be controlled steplessly by means of a so called “variator”. CVT is the English abbreviation for “Continuously Variable Transmission”. 228 023 The new Audi multitronic with Tiptronic function offers a synergy of the best possible dynamics, optimal fuel utilisation and the highest possible level of drive comfort. 2 Contents Page Introduction multitronic . 2 The gearbox concept .. 9 Specifications 10 Gearbox modules The flywheel damper unit . 11 Sectional view of gearbox .13 The forward clutch/reverse clutch with planetary gear train .. 14 The clutch control .. 20 The clutch cooling system . 28 The auxiliary reduction gear step 31 The variator .32 The transmission control .. 35 The torque sensor .. 38 The splash oil cover .. 43 The chain . 44 The oil supply .47 Electrohydraulic control .52 Selector shaft and parking lock .56 Gearbox housing/ducting and sealing systems . 57 Hydraulic chart ..60 ATF cooling system 62 Gearbox control Control unit for multitronic J217 .. 63 Sensors . 66 CAN information interchange, multitronic . 75 Auxiliary signals/interface .76 Function diagram .. 80 Dynamic control program DCP .. 82 Service Towing 91 Update programming flash programming . 92 Special tools/workshop equipment 96 New Important The Self Study Programme contains information about Note Note designs and functions. The Self Study Programme is not a Workshop Manual Please refer to the relevant Technical literature for all maintenance and repair instructions. 3 Introduction Ge