Audi A4

since 1994 release

Repair and operation of the car


A4 Audi
- Running gear
   Protection of passengers
   Full zinc covering
   Full drive
   Concepts of the all-wheel drive
   Distributive torsen-differential
   Dynamics of the movement on the dry road
   Maintenance instructions of quattro cars
   Mechanism of blocking of differential
   Additional works on maintenance
   Motive compartment
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ System of an exhaust
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and channels of absorption
+ System of injection
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ System of ignition
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics



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Dynamics of the movement on the dry road

There are no doubts that the torsen-differential acts correctly and with sense at bad stickiness on the road. Therefore here the explanation of that occurs in transmission of Audi Quattro on the dry road is still given: as it was already mentioned, forward wheels on turn pass longer piece of a way, than back wheels as back wheels describe an arch of smaller radius.

In this regard the torsen-differential tells bigger driving effort of a back axis (because of their smaller number of turns) that supports the necessary tendency to turn inside.

If speed too big and thus one of back wheels is turned, the differential transfers at once big driving force to slower forward wheels at present. Fast reaction of system promotes that forward wheels pull more strongly, and the car is stabilized. Effect: running characteristics in the limit range of turn improve.