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Scania Delivering 85 Ethanol Buses to Stockholm Suburbs; E95 in a Diesel Engine

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Scania ethanol buses for SL. Click to enlarge.

Scania has sold 85 ethanol-powered articulated buses to Busslink, operator of bus services for Storstockholms Lokaltrafik (SL), the regional public transport company in the Swedish capital. Scania’s ethanol bus features a modified diesel engine running on a mixture of 95% ethanol with 5% ignition improver. (Earlier post.) The buses that were just ordered will be equipped with third-generation Scania ethanol engines.

The order from Busslink is Scania Sverige’s largest single bus transaction in the Swedish market since 2004. Scania’s bus sales in Sweden began 2009 very strongly, and some 100 such vehicles have been registered so far this year.

A continued commitment to ethanol power is consistent with SL’s decision to buy only buses that operate on renewable fuels starting in 2010.

—Leif Nyström, who is in charge of bus and coach sales at Scania’s Swedish distributor, Scania Sverige AB

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Scania’s third-generation CI ethanol engine.

The third-generation ethanol engine is an adaptation of Scania’s 9-liter diesel engine with charge-cooling and exhaust gas recirculation (EGR). The engine delivers 270 hp (201 kW) of power and torque of 1,200 N·m (885 lb-ft), and offers a thermal efficiency of up to 43%, compared to thermal efficiency of up to 44% for diesel, according to Scania.

The engine meets the enhanced environmentally friendly vehicle (EEV) standard, which is slightly stricter than Euro 5. Compared to a conventional diesel engine, its ethanol-powered vehicles can reduce fossil carbon dioxide emissions by up to 90%.

Stockholm has the world’s largest fleet of ethanol buses providing service in the central areas of the city. The 85 buses for Busslink will go into service on routes supplied from depots in the northern and southern suburbs of Stockholm. Forty of the buses are specifically designed for urban traffic while the others are adapted for regional service. Deliveries will begin this autumn and will be completed during the spring of 2010.

Scania currently has ethanol-electric series hybrid buses (earlier post) on trial in the UK and Sweden (earlier post).

Scania has more than 20 years of experience with ethanol buses in practical operation. The company has delivered 600 such buses, about 500 of them to Swedish cities. In recent years, Scania has also delivered ethanol buses for commercial service in Great Britain, Spain, Italy, Belgium, Norway and elsewhere.

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