Address: Voith GmbH & Co. KGaA
Commercial Vehicles
Alexanderstraße 2 89522 Heidenheim
Phone: +49 7321 37 8579 Connect: Website: View website Contact: Contact supplier

Drive Economically, Safely and Sustainably

Voith has already equipped more than 300,000 city buses around the world with DIWA automatic transmissions. And the number is increasing every day.

Our product spectrum for buses also includes retarders and air compressors. Solutions that contribute to helping people reach their destinations more efficiently and more comfortably all over the world.

  • DIWA transmission supports a stop-time up to 60 sec. without influence of the driveline’s readiness.
  • A reduction from 10 to 12 % fuel consumption can be achieved, depending on application.
  • Proven in service: Over 100 buses have already been equipped with Stop-Start Technology.

Stop-Start Technology

The DIWA.6 automatic transmission from Voith was specially adapted to utilize the Stop-Start function while idling. In conjunction with an engine that is equipped with this function, fuel savings of 10-12 percent can be achieved. Stop-Start Technology has already been installed in more than 100 buses in England, where it has been proving its capabilities and reliability in service every day since July 2015.

In normal operation, city buses spend up to 40 percent of their time idling at stops, red lights and in heavy traffic. With the Voith DIWA.6 transmission, the bus driveline can be switched off during this time in order to reduce fuel consumption and consequently emissions. Specially developed for urban transport, the DIWA transmission supports a stop-time up to 60 sec. without influence of the driveline’s readiness. This allows fuel savings of 10-12 percent, depending on the load.

While most controlled cut-off technologies in the field are still in their infancy, the DIWA.-6 Stop-Start Technology from Voith has already proven that it is fully-ready for operation. It has been successfully used since July 2015 in more than 100 buses in cities across England and by now, a further 150 vehicles equipped with Stop-Start Technology have taken up service.

Economy and Environment in Focus: DIWA Automatic Transmissions for Buses

Accelerate, shift, brake, shift. City bus operators face numerous challenges on the road each day. As a bus manufacturer or operator, rely on Voith’s globally successful DIWA automatic transmissions. With DIWA, you can benefit from 50% less shifting and reduced downtime, maintenance costs and fuel usage.

Today, over 300,000 midsize, city and intercity buses worldwide use a DIWA automatic transmission. Millions of passengers enjoy a more comfortable ride with less noise. At speeds that require other transmissions to shift two to three times, Voith offers you the benefit of stepless accelerating and braking.

Benefits at a Glance

  • Lower fuel consumption
  • Reduced air and noise pollution
  • Maximum comfort for passengers
  • Low maintenance costs
  • Lower installation effort
  • Global market leader in CNG buses
  • Meets the needs of demanding BRT systems worldwide

Our Service – Part of Your Business

As a customer, you will benefit from our years of experience in the development and manufacture of key components for commercial vehicles.

Our service includes maintenance, repair, system updates and spare parts supply. As an OEM, we have examined through original parts maximum safety, longer life and higher value retention. Based on our systems expertise, we guarantee optimum service from a single source.

Service for DIWA Automatic Transmissions

Today, almost all midsize, city and long-distance buses can be fitted with DIWA automatic transmissions. This means state-of-the-art technology for the full range of combustion engines.

Specially developed for public transit buses, these transmissions are a must-have for economical operation. Outcomes include reduced complexity and less installation effort for the manufacturer, as well as lower fuel consumption and rock-bottom maintenance and service costs for the operator. And not only today, but for the entire service life of the bus.

Service for Retarders

From 7.5 to 250 tons, Voith has the right retarder for all your trucks and buses. See for yourself.It’s not just the brake in action when trucks and buses come to a stop. With Voith retarders, up to 90% of all braking operations can be achieved without any wear. Your brake is always available when the situation gets dicey. The benefits are numerous: More comfort, reduced wear, less time spent in the shop, higher average speeds, and increased transport capabilities. And with up to 80% less brake dust, the environment is happy.

Service for Air Compressors

Energy-efficient on all road types: air compressors with pre-chargers. Auxiliary units such as air compressors in trucks and buses contribute significantly to traveling economically while saving the environment at the same time. Only from Voith, two-stage compression with an inter-cooling system results in significantly reduced power uptake during transport operation.

And your vehicle is much more fuel-efficient. A special system even lowers fuel consumption while idling, without complex decoupling of the compressor.


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