In combination with effective temperature management, SCR-based exhaust-gas treatment can do even more to reduce nitrogen oxide emissions. Bosch has developed an SCR technology called DI-SCR that uses a double injection of urea. With this system, a quantity of urea – the exact amount depends on the current driving situation – is injected into a catalytic converter situated close to the engine as well as into another catalytic converter located further away from the engine. DI-SCR helps vehicle manufacturers to also maintain compliance with emission requirements that are expected in the future.

efficient use of


High rate of nitrogen oxide reduction with lower AdBlue® consumption


nitrogen oxide

Lower NOx emissions under high engine loads and the benefit of high NOx conversion rates during particulate filter regeneration

High level

of product maturity

of the individual components ensures reliability of the technology in use

high system


Reduced ammonia input in the low-pressure exhaust gas recirculation