Voith Aquatarder PWR

Why does a retarder always have to work with oil? Can we not use a medium that is already present for braking: the coolant? Would this not help to significantly reduce maintenance costs?
This, or something like it, is what the questions must have sounded like when development began on the world's first ever water retarder. The result is already on the roads: the Voith Aquatarder.

The Aquatarder operates as the primary retarder: It is mounted on the front of the engine and connected directly to the crank shaft. Like all Voith retarders, it works on the principle of hydrodynamics: The engine crank shaft drives a rotor. The rotor accelerates the operating medium, in this case the cooling water. A stator, which is located opposite the rotor, slows the medium down again. This braking moment is transferred via the rotor and the crank shaft to the vehicle's driveline. The result: The vehicle is decelerated.

That's quite simple: Because it's there anyway. When a retarder is used for braking, kinetic energy is converted into thermal energy. The cooling water absorbs the heat directly and transports it to the vehicle cooling system, where it is dissipated. The advantage to you: not only does braking cause no wear, the system also requires no maintenance.

Voith GmbH & Co. KGaA
Commercial Vehicles
Hardtstraße 8
74564 Crailsheim
Deutschland, Germany

Service
Tel.: +49 7951 32-1555
Fax: +49 7951 32-1506
retarder@voith.com

Voith GmbH & Co. KGaA
Gottfried-Linke-Straße 205
38239 Salzgitter
Ms Sabrina Lipok
Tel.: +49 5341 21 5446
or
Mr Sascha Koch
Tel.: +49 5341 21 4872
Fax: +49 5341 21 1830
vta-training-cv@voith.com

Technical Service
Tel. +49 7951/32-1555
Fax +49 7951/32-1506
retarder@voith.com

Ordering spare parts
Tel. +49 7951/32-1644
Fax +49 7951/32-756
VTSparepartsCV@voith.com

• Higher safety
• Maintenance-free
• Low service costs
• Fewer visits to workshops
• Less fuel consumption
• Less emissions