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English   The Citaro story
10.07.2011 von admin

Continuous improvements down to the last detail

A key element in the Citaro’s recipe for success is its ongoing development. In autumn 2005, Mercedes-Benz took the model range to new heights with the second generation of the Citaro. It was kick-started with the debut of the new Citaro LE (low entry). This already included many of the modifications which were then incorporated into series production for all Citaro models in spring 2006. The front section, rear, interior and driver’s area all underwent a thorough overhaul, while the independent front suspension was also introduced for the first time.

The Mercedes-Benz Citaro LE – 2005

Quick advance from Euro II to EEV

During its production, the Mercedes-Benz Citaro ran through almost the full scale of Euro emissions standards. At its premiere in 1997, the in-line six-cylinder engine with a Euro II rating represented the state of the art in emissions technology. The 2001 model version of the Citaro was powered by Euro III engines. Alternatively, the Citaro was already available with a CRT particulate filter which undercut the Euro IV particulate limits. In 2000, Mercedes-Benz presented the Citaro with natural-gas drive. This fulfilled the Euro IV emissions limits, and became available with the voluntary EEV (Enhanced Environmentally-friendly Vehicle) rating in 2002. The Citaro could also be specified with the German “Blue Angel” environmental certification in both its natural-gas and diesel variants.

Since 2006, diesel engines with the SCR emission control system have been fitted to meet the Euro IV and Euro V emissions standards. This BlueTec diesel technology produces a clear reduction in pollutant emissions, and enables fuel consumption to be lowered by a considerable margin at the same time.

Particulate emissions can be cut further by adding an optional particulate filter. This combination allowed the diesel engines to meet the voluntary EEV standard – and since spring 2010 they have been able to do so by means of internal engine measures alone, without the need for a particulate filter.

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