The SCR catalytic converter with DENOXTRONIC®
1 AdBlue tank, 2 Temperature sensor, 3 Fuel-level sensor,
4 Supply module, 5 ECU, 6 Metering valve, 7 Air-supply tank,
8 Exhaust-gas temperature sensor, 9 Exhaust-gas sensor,
10 Air supply, 11 Treated exhaust-gas, 12 Atomizer pipe

The SCR catalytic converter represents a technological advance which fills the demands for economical and clean-burning engines. The SCR operates with the reduction agent AdBlue. SCR catalytic converters can be used alone or in combination with a particulate filter, a component not yet available as standard equipment for commercial vehicles.
A central part of the system is the DENOXTRONIC reduction-agent metering system from Bosch. At present, the SCR catalytic converter is being prepared for commercial production with a number of different vehicle manufacturers.