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 commercial vehicle manufacturers and fleet operators to also maintain compliance with emission requirements that are expected in the future.


Enables fuel-efficient engine applications

high level

of product maturity

of the individual components ensures reliability of the technology in use


nitrogen oxide

significantly reduced NOx emissions shortly after engine start and also in low-load situations

high system


Low emissions over lifetime