Volvo Hybrid Bus and Technology Moves Forward
2009-06-09 Source：english.chinabuses.com
Summarize：Volvo’s new hybrid bus now for the first time begins to carry passengers. Hybrid solutions for heavy vehicles have existed for many years, but they have been too expensive and reduced emissions ...
Volvo’s new hybrid bus now for the first time begins to carry passengers. Hybrid solutions for heavy vehicles have existed for many years, but they have been too expensive and reduced emissions too little, as a result of which they did not achieve market penetration. Volvo’s hybrid bus is equipped with two engines working together, a diesel engine that due to electric drive could be made smaller than usual, and an electric motor. The bus can be driven with both engines operating together or one or the other singly, which is one of the major benefits of the parallel hybrid technology used by the Volvo Group. When the bus brakes, the braking energy is recycled and stored in a battery mounted on the roof of the bus. This energy is then used to drive the electric motor. When the doors open at the bus stop, the diesel engine is shut off entirely. The bus then starts solely powered by the electric motor and first when the bus reaches a speed of 15-20 km/h, the diesel engines starts automatically.
Volvo’s hybrid technology contributes to a quieter and cleaner city environment. Fuel consumption, and consequently the emission of the greenhouse gas carbon dioxide, is reduced by up to 30% depending on where the bus is operating in traffic. The emission of nitrous oxides and particles declines by 40-50% compared with a conventional diesel bus.
Volvo expects to start series production of hybrid buses at the beginning of 2010. The company has already received its first orders for the bus. In the near future, Volvo Buses will also start field tests with the first of six hybrid double-decker buses.
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