DaimlerChrysler Delivers Its First Euro-5 Buses

7 August 2006

Euro-5 Citaro.

DaimlerChrysler’s Mercedes-Benz Bus and Coach Unit has delivered the first seven Citaro urban regular-service buses equipped with Euro 5-compliant turbodiesel engines.

The Euro-5 emissions standard is due to come into force in the EU in 2008/2009; full enforcement for Euro-4 standards begins this October. Euro 5 stipulates a further 43% reduction in NO_x emissions over Euro 4.

Seven coaches went to transport operator Verkehrsgesellschaft Breitenbach GmbH & Co. KG based in Hamm, Germany. One went to Dutch transport operator RET (Rotterdamse Elektrische Tram) as the first part of a consignment totalling 90 Citaro urban buses which will be going into service in Rotterdam from August 2006.

The Citaro buses use DaimlerChrysler’s BlueTec technology based on urea-based Selective Catalytic Reduction (SCR), combined with the installation of a larger sintered-metal particulate filter. The engines develop 205 kW (279 hp) of power and offer peak torque of peak torque of 1,120 Nm (826 lb-ft) at 1,300 rpm.

To make the Mercedes-Benz Citaro urban buses Euro 5-compatible, the developers increased the size of the SCR catalytic converter and adjusted the urea (Ad-Blue) injection quantity.