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Daimler 360 GRAD - FAKTEN zur Nachhaltigkeit 2008 Daimler Nachhaltigkeitsbericht 2008 / Environmental protection, innovation, and safety / Products and product use / Airborne emissions / BLUETEC technology at Daimler* BLUETEC with DeNOx storage catalytic converter The second version of BLUETEC, which has been proving its worth in the truck and bus segment since 2005, will also be featured in the new GL-, ML-, and R-Class models to be launched in the U.S. in 2008. Here, an additive known as AdBlue is injected into the exhaust gas flow in order to release ammonia, which reacts with nitrogen oxides in the downstream SCR catalytic converter to form harmless nitrogen and water. This second BLUETEC version is thus even more effective, and the vehicles that use it not only meet the stringent Bin 5 standard but also have the potential to achieve emission levels below the limits stipulated by the future Euro 5 and Euro 6 standards. BLUETEC with AdBlue * Content on this page is available exclusively on the Internet.
Daimler 360 GRAD - FAKTEN zur Nachhaltigkeit 2008 Daimler Nachhaltigkeitsbericht 2008 / Environmental protection, innovation, and safety / Products and product use / Noise emissions Noise emissions Along with the airflow, a vehicle’s axles, steering system, tires, engine, and powertrain also have a major impact on acoustic comfort. Cooperation between aero-acoustic experts and vehicle body and engine developers has led to a reduction in both interior and exterior noise emissions in Daimler vehicles. The problem of traffic-related noise cannot be solved by measures affecting the vehicles alone, however. Other important factors here are increasing traffic densities, construction along roadways, driving habits, the surfaces and conditions of roads, and tire properties. In general, the main contributory factors to noise in commercial vehicles are the mostly rough tread patterns on truck tires, as well as vehicle bodies and the loads the trucks carry. Low-vibration design, optimum engine encapsulation, and aerodynamically efficient cabs are key parameters that Daimler can directly influence. The Group also works closely with body manufacturers to achieve optimum alignment of the entire vehicle with a view to reducing noise emissions to a minimum.
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