Volvo Trucks – Automatic Traction Control – for improved driveability and economy

Volvo Trucks – Automatic Traction Control – for improved driveability and economy


Volvo Trucks is now introducing
a new feature for trucks driving in tough conditions: all-wheel drive with Automatic
Traction Control for Volvo FMX. The Automatic Traction Control
means that the driven front axle is only used when needed, which improves
both fuel efficiency and driveability. It is a well-proven feature
in Volvo construction equipment, but Volvo is the first manufacturer to also introduce this solution
in construction trucks. Volvo’s Automatic Traction Control engages and disengages the front-wheel
drive automatically at the right time when driving on slippery surfaces. The system is very fast. It takes
half a second to engage the dog clutch, and this is to secure maximum traction
and mobility at all times. Today most drivers activate
the front-wheel drive or diff lock before the terrain becomes difficult,
in order to avoid a standstill. With Automatic Traction Control, the driver can benefit
from better manoeuvrability right up until
the road conditions get worse. When the sensors
on one of the rear wheels detect that it’s starting
to lose traction, the all-wheel drive
is instantly engaged. A dog clutch then transfers the power
to the driven front axle and the truck can continue
without dropping either torque or speed. The driven front axle
then remains activated until the driver releases the throttle pedal. What really strikes you
with Automatic Traction Control is how little
the front wheel drive is engaged. It’s only needed a fraction of the time, even when driving in the most difficult
conditions, such as on soft sand, and this makes the benefits of the increased fuel efficiency
and less wear really obvious.

Only registered users can comment.

  1. but on challenging roads you need to turn the traction control off so you wont loose power to the wheels leaving you standing there like a c…
    many foreign drivers have a whole new world when we tell them to shut it off when they struggle on hills.

  2. Why is choosen for an Dog clutch, and not for an multidisc clutch  as used in agricultural tractors? An multidisc clutch could function as an overload clutch and engage smoother by speed diference between the axles.

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