Untitled - Mercedes-Benz Danmark

GlossaryAdBlueFuel tankSCR cat.BlueTec ® SCR diesel technologyBlueTec ® is the pioneering SCR dieseltechnology from Mercedes-Benz:a cost-effective and ecological solutionwhich helps your Vario to comply withthe EURO 4 emissions standard. TheSCR (Selective Catalytic Reduction)exhaust gas treatment process is theonly technology capable of ensuringthe necessary reduction in exhaustgas emissions while optimising engineoutput and fuel consumption at thesame time. The BlueTec ® system includesmodified engines with a higher peakpressure, which improves combustion andreduces the number of particulates.Further components of the system includea catalytic converter and an AdBluetank. AdBlue additive is simply filled upfrom a pump and carried in this separatetank on board. From here it is fedvia a metering unit into the exhaust gasfrom the engine and is converted by theheat into ammonia, which is requiredfor the chemical reaction in the catalyticconverter. The catalytic reaction hereconverts the nitrogen oxides into ecologicallyharmless substances – nitrogenand water.Anti-lock braking system (ABS)ABS prevents the wheels from lockingduring braking. Speed sensors contin -u ously monitor the speed of each wheel.If ABS detects that a wheel is at risk oflocking up, the brake pressure isreduced. When the danger of lockinghas been averted, the pressure isincreased again. ABS helps the driverto maintain steering control of thevan, even during emergency braking.All-wheel driveThe permanent all-wheel-drive variantsof the Vario deliver enhanced pullingpower and traction on difficult terrain.A selectable off-road ratio ensures greatertractive power on rough ground. Tofurther improve traction, both the differentialin the transfer case and the rearaxle differential can be locked.Differential lockThe differential lock ensures that thewheels of a driven axle turn at the samespeed. This prevents individual wheelsfrom spinning, which improves tractionand enhances safety, particularly onuneven or slippery surfaces, when pullingaway on a gradient or on roughterrain.Driver’s front airbagTo round off the safety equipment, afront airbag is available for the Vario’sdriver’s seat. It enhances driver safety,acting in partnership with the seat beltas an additional retention system.Note: Airbags in no way diminish theneed for occupants to fasten their seatbelts correctly at all times.44 Glossary