The overall gear ratio selected provides a balance between the amount of
tractive torque available from the electric motor and the vehicle speed range available before the EV mode is disengaged at higher vehicle speeds.
Not exact matches
The
tractive force of a vehicle (exerted by tyres on road) is maximum when engine generates maximum
torque, which makes acceleration directly dependent on engine
torque.
A drive wheel is a wheel of a motor vehicle that transmits force, transforming
torque into
tractive force from the tires to the road, causing the vehicle to move.
Torque Vectoring Control, which automatically applies small amounts of brake force to limit wheel spin at the front axle, further enhancing available
tractive force.
While this tuning reduces low - down
torque, that is supplemented by the
tractive efforts of a 32kW electric motor that can produce up to 170Nm.
When in 4WD Auto mode, the system uses vehicle sensors to adjust and redirect
torque between front and rear axles based on real - time driving conditions, providing the vehicle with responsive
tractive performance.
The high
torque of 390 Nm in total (287.64 lb - ft)-- 240 Nm (177.01 lb - ft) from the 1.4 TFSI plus an extra 150 Nm (110.63 lb - ft) from the electric motor — is transformed into the required level of
tractive power when accelerating.
When the vehicle requires additional
tractive power during rapid acceleration or while climbing gradients, the system can deliver an instant peak
torque boost of up to 3400 N · m (2,508 lb - ft) for a short period.
The Euro 6 turbo engine has a maximum
torque of 1150 N · m (848 lb - ft), providing the same
tractive force as a diesel engine of this performance class.
As with the T1 Torsen,
torque will be distributed dynamically depending on
tractive conditions, but with an actual (rather than nominal) static bias.
Once the car is in motion and
torque demand increases, the clutch will engage and send engine
tractive effort through the transmission again, which enables the vehicle to achieve exceptionally smooth starts.
This ensures that the high
torque of 440 Newton metres in total — 240 Nm from the 1.4 TFSI plus an extra 200 Nm from the electric motor — is transformed into the required level of
tractive power when accelerating.
In its basic setting, the
torque - sensing centre differential delivers 40 percent of the
tractive force from the engine to the front axle and 60 percent to the rear axle.
Similar to the sport differential in conventional quattro vehicles, these motors allow
torque vectoring — the targeted acceleration of individual wheels and thus an active distribution of
tractive power.