NewswireToday - /newswire/ -
Heidenheim, Baden-Wuerttemberg, Germany, 2010/09/23 - At the IAA Commercial Vehicle Show, Voith Turbo is presenting a new technology for commercial vehicles that utilizes exhaust heat and therefore reduces fuel consumption and harmful emissions. FSE: VO2A
The Voith SteamExpander converts the energy contained in hot exhaust gas into mechanical power, which is then recirculated directly to the driveline.
With conventional commercial vehicle engines, only about 40 percent of the energy in the fuel actually reaches the wheels. The rest disappears through heat and friction losses. Nearly 30 percent are lost via exhaust gases. This is where the Voith WHR (Waste Heat Recovery) system comes in, with the SteamExpander as its core element. In the hot exhaust flow of the diesel engine, steam is generated via a heat exchanger. This steam drives the SteamExpander like a piston engine. The usable torque created in this process is redirected into the driveline.
Test stand trials have demonstrated that the SteamExpander provides about 12 to 28 kW (16 to 38 HP) of additional drive power with a diesel engine rated at approximately 200 to 400 kW (270 to 540 HP). This allows fuel savings and reduced CO2 emissions of around 5 percent. The SteamExpander used in this test has two cylinders and approximately 750 cm³ and is thus comparable to a bike engine.
With the SteamExpander, Voith is making an important contribution to the development of new technologies for future efficient, low-emission combustion engines - true to the IAA motto "The Future in Powertrain Solutions." For demonstrations at the IAA, Voith has set up a test truck, on which the entire WHR system including heat exchanger and control will be examined in realistic traffic conditions.
Voith Turbo (voithturbo.com), the specialist for hydrodynamic drive, coupling and braking systems for road, rail and industrial applications, as well as for ship propulsion systems, is a Group Division of Voith AG.
Voith (voith.com) is setting the standard in the paper, energy, mobility, and service markets. Established on January 1, 1867, Voith is now one of the largest family-owned businesses in Europe, with 39 000 employees, 5.1 billion euro in sales, and over 280 locations worldwide. Voith is an official partner of the initiative "Germany - Land of Ideas".