Additional traction on critical surfaces.Whenever additional traction is needed on slippery or unpaved surfaces, MAN HydroDrive® front-axle drive can be engaged. It consists of hydrostatic wheel hub motors, which generate torque on the front wheels and thus drive them when required.
source/image(PrtSc): MAN Truck & Bus
The driver decides for themselves whether HydroDrive® should provide additional power automatically or if they want to switch the system on whenever additional traction is required.With MAN HydroDrive®, a hydropump on the gearbox output supplies the wheel hub drives at the front axle.
This ingeniously simple, robust and maintenance-friendly technology is comparable with the conventional rear-axle drive in terms of fuel consumption and wear, and offers a range of advantages over the classic all-wheel drive. The distributor gearbox, a typical feature of the classic all-wheel drive, is no longer required where hydrostatic wheel drives are used.
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In addition, with MAN HydroDrive®, only the rear wheels are powered in road traffic, and no friction is produced by the hydropumps or wheel drives. In contrast, with the all-wheel drive, the transmission elements of the front-axle drive continue to turn, even when they are switched off.
