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Volvo Trucks' Hybrid Technology Used for Trash Collection in Sweden

May 10, 2008

GOTHENBURG, Sweden --- Volvo Trucks is taking a major step toward commercialization of its hybrid technology for heavy vehicles by launching two hybrid garbage trucks that will be tested in Sweden by trash-collection firms Renova and Ragn-Sells.

"This test phase is the last stage in the evaluation of our hybrid solution ahead of production launch," said Staffan Jufors, president and CEO of the Volvo Truck Corp. "Since we presented our first concept vehicle in 2006, we have seen considerably heightened market interest in this technology."

Commercial production of the hybrid trucks is set for 2009. Volvo's hybrid solution combines a diesel engine with an electric motor. The electric motor is used for moving off from standstill and for acceleration up to 20 km/h. At higher speeds, the diesel engine is activated. When the truck stops, the diesel engine automatically switches off, thus avoiding unnecessary idling.

The batteries are recharged using the power generated during braking, making this system highly suitable for operating cycles involving repeated stops and starts, such as trash-collection duties. The hybrid garbage trucks are expected to use up to 20 percent less fuel and thus cut carbon dioxide emissions by a corresponding amount, Volvo said.

One of the trucks is also equipped with an extra battery pack that drives the trash compactor, and this is charged via the main electrical system when the truck is parked overnight. The truck's total reduction in carbon dioxide emissions is expected to be as much as 30 percent.

Electric power has the added advantage of being entirely exhaust-free and emitting low noise, important considerations for garbage-collection vehicles that often operate in urban areas early in the morning. 

"Hybrid technology will play a major role in the future as the climate issue and oil dependency come into ever-sharper focus," said Mats Franzen, engine manager of product strategy and planning at Volvo Trucks. "No matter which fuels dominate in the future, their supply will be limited. Technology that leads to lower fuel consumption will be of immense interest to our customers, irrespective of the type of haulage operation with which they work."

For distribution trucks, fuel consumption may be able to be cut by 20 to 30 percent, Franzen said. In long-haul operations, the percentage reduction will not be as great but since these trucks cover long distances, the total fuel saving will nonetheless be considerable. 

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