The Volvo SCR system consists in principle of an AdBlue tank positioned alongside the standard diesel tank, an AdBlue pump, an injector unit and an SCR catalytic converter. This means the engine itself is not really involved in the process - except for delivering optimal combustion levels:
1 The AdBlue tank is placed beside the vehicle's regular diesel fuel tank.
2. AdBlue is injected into the exhaust gases in the form of finely atomised spray. Precise metering ensures the optimum blend for every operating condition.
3. In the SCR catalytic converter, nitrogen oxide is transformed into harmless nitrogen gas and water. The catalytic converter is completely integrated into the silencer.