Hybrid buses fight pollution in Madrid

The city of Madrid will take delivery of 51 hybridised buses from Scania for cleaner public transport operations in the city.

Hybrid buses for MadridScandinavian vehicle manufacturer Scania has taken an order to deliver over 50 hybrid Citywide buses to the Spanish city of Madrid to help the community meet its challenging ecology targets and meet EU suburban and short distance Class II regulations.

The introduction of the new buses is part of an overall effort by Madrid to combat the problems of pollution. Measures takin include speed restrictions and nitrogen oxide (NOX) monitoring with triggers in place to ban passenger cars from certain areas of the city if the pollution reaches pre-defined levels.

The local authority has challenged the public transport operators to move over from diesel fuel to greener technologies and has had a ban in place on the purchase of new diesel powered buses since 2010. Bus operators have financial incentives to use hybrid, all electric or gas-operated buses.

Commenting on the move towards greener public transport in major cities, the head of Scania Buses and Coaches, Klas Dahlberg said, “Many cities are cautiously examining the benefits of hybridisation but Madrid is now a leader in actually implementing alternative technology. These buses can help reduce CO2 emissions and make a substantial contribution to the agreed climate targets.”

The 51 new Class II specification Scania Citywide buses will be operated by seven bus companies on behalf of Consorcio Regional de Transportes de Madrid and can reach speeds of up to 100kph (62mph). The hybrid powertrain includes the Scania 9-litre engine and offers 320 hp with SCR-only technology that is compatible with up to 100 percent biodiesel and Hydrotreated Vegetable Oil (HVO).

The hybrid unit is located between the engine and gearbox and is rated at 150 kW and 1,050 Nm. A total of 1.2 kWh of energy storage is provided by a lithium-ion battery integrated in the roof structure at the front of the bus and is housed in a neatly styled bulb together with a DC/DC voltage converter and a cooling unit.

“This bus is ideally suited for combined city and suburban operations,” continued Klas Dahlberg. “That gives customers the opportunity to invest in carbon-saving operations with an estimated payback of just over five years, including battery replacements during the lifespan. By comparison, payback is some two years later in purely inner-city operations.”

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Sustainable transport

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