SSP363 Audi Q7 - Power Transmission / Transfer Case ... - Volkspage

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18 <strong>Transfer</strong> case 0AQ Self-locking centre differential Introduction The newly developed 3rd generation centre differential is used in the <strong>Q7</strong>. As with its predecessors, it is designed as a selflocking differential. The asymmetric/dynamic torque distribution is a new feature. The self-locking centre differential is designed as a planetary gear. Driving torque [%] 100 % 80 58 42 20 0 23 % Torque distribution range, front axle 60 % An asymmetric basic torque distribution of 42% to the front axle and 58% to the rear axle is ideal from the viewpoint of well-balanced driving dynamics. A friction torque proportional to the driving torque is generated in the differential. This in turn produces a locking torque. The locking torque and the basic torque distribution result from the torque distribution to the axles. Torque distribution range, rear axle Max. torque distribution to rear axle (without EDL control system) Max. torque distribution to front axle (without EDL control system) 77 % 40 % 363_014 100 % 80 58 42 20 0 363_015
Friction disc Components overview Ring gear Drive hub/rear axle Friction discs Chain sprocket to front axle Input shaft (to rear axle) Differential housing Low-friction bearing Planet carrier Oilway Bearing bush Friction disc Sun gear/front axle Input shaft 6 planet gears 363_017 19
Page 1 and 2: Service Training Audi Q7 - Power Tr
Page 3 and 4: Contents Introduction Drive concept
Page 5 and 6: One of the primary development goal
Page 7 and 8: The front and rear axle differentia
Page 9 and 10: The 6-speed automatic gearbox 0AT..
Page 11 and 12: Automatic gearbox selector mechanis
Page 13 and 14: DSO images of P/R/N/D/S signals DSO
Page 15 and 16: DSO images of the tiptronic signal
Page 17: Design / function The transfer case
Page 21 and 22: Asymmetric basic torque distributio
Page 23 and 24: Asymmetric/dynamic torque distribut
Page 25 and 26: Example of static torque distributi
Page 27 and 28: Design and function of the gear cha
Page 29 and 30: This is how it works: The upper sha
Page 31 and 32: Service / special tools To avoid ha
Page 33: Electronic Differential Lock EDL On

SSP363 Audi Q7 - Power Transmission / Transfer Case ... - Volkspage

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