MTU Passive Regeneration, CRT effect

Passive regeneration/CRT effect (Continuous Regeneration Trap)

MTU uses the CRT effect for regenerating the diesel particulate filter. This is based on chemical reactions that take place in the engine’s exhaust aftertreatment system. First of all, nitrogen dioxide (NO2) is produced in the oxidation catalyst from the nitrogen monoxide (NO) in the ex-haust gas. In the diesel particulate filter, the process is reversed and the soot deposited in the diesel particulate filter is continuously burned off. Hence the name “Continuous Regeneration Trap” (CRT), i.e. a continuously regenerating filter. This effect is also referred to as passive regeneration. In contrast to active regeneration, the reaction requires no additional energy.

 

 

C: Carbon

CO: Carbon Monoxide

CO2: Carbon Dioxide

H2O: Water

HC: Hydrocarbon

NO: Nitrogen Monoxide

NO2: Nitrogen Dioxide

DOC: Diesel Oxidation Catalyst

DPF: Diesel Particulate Filter

 

Done