European Union (EU) legislation sets out exhaust emissions standards for new vehicles sold in the EU. They govern the limits on pollutants emitted in vehicle exhaust gas (sulphur dioxide, nitrogen oxides, hydrocarbons, carbon monoxide, carbon dioxide and diesel exhaust particulates). Since September 2015, all passenger carrying vehicles must be registered as Euro 6, and Commercial vehicles since September 2016.
Euro 6 is achieved through the following technologies:
Selective Catalytic Reduction uses AdBlue® urea solution to convert nitrogen oxide into nitrogen and water. If the vehicle is equipped with this kind of emission control system for diesel engines, the filler neck for the AdBlue® tank is located below the filler cap for the fuel tank (under bonnet for Crafter). The tank holds approximately 9, 13 and 18 litres for Caddy, Transporter and Crafter respectively. The AdBlue® consumption figures depend on individual driving style, the system’s operating temperature and the ambient temperature that the vehicle is operated in.
In our diesel engines, exhaust gas recirculation is a technique that is used to reduce nitrogen oxide (NOx) emissions. EGR works by recirculating a percentage of the engine’s exhaust gas back to the engine cylinders.
The DPF captures soot particles in the exhaust gas. Periodically, the soot particles are automatically burnt under high temperatures to regenerate the filter and maintain exhaust gas emissions.