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Combined exhaust gas aftertreatment

Fig. 5. Example of a combined exhaust gas aftertreatment system model. Fig. 5. Example of a combined exhaust gas aftertreatment system model.
Fig. 2.25 Combined exhaust gas aftertreatment system for a low-speed engine with a SCR and b dry DeSO (DryEGCS) (Picture Couple Systems GmbH)... Fig. 2.25 Combined exhaust gas aftertreatment system for a low-speed engine with a SCR and b dry DeSO (DryEGCS) (Picture Couple Systems GmbH)...
In commercial vehicle engines, by means of cooled exhaust gas recirculation, in-cylinder temperatures are reduced, leading to lower NOx, but mostly also to higher particulate emissions. To fulfill future emission standards, a combination of raw emission reduction and exhaust gas aftertreatment is necessary. Decreasing fuel economy with raw emission reduction has to be weighed against catalyst—and especially noble metal—price for exhaust gas aftertreatment. [Pg.108]

As a consequence, different engine and aftertreatment calibrations are required with respect to the corresponding application. Furthermore, depending on the application and the required emission hmits, different exhaust gas aftertreatment technologies have to be used. Examples are DPF only, SCR only and combined DPF -I- SCR aftertreatment systems. [Pg.40]

Stringent emission limits for EU and US railroads have forced the introduction of exhaust gas aftertreatment for rail diesel engines. While the most complete pollutant reduction could be achieved with a combined particulate filter and SCR system, an alternative way to meet legislation could be through tuning the engine to meet PM emission limits without a particulate filter and use SCR for NOx reduction. [Pg.41]

Chatterjee D, Kocr P, SchmeiBer V, Marek M, Weibel M, Krutzsch B (2010) Modelling of a combined NOx storage and NH3-SCR catalytic system for Diesel exhaust gas aftertreatment. Catalysis Today 151 395-409... [Pg.424]

Hug HT, Mayer A, Hartenstein A (1993) Ofl-highway exhaust gas aftertreatment combining urea-SCR, oxidation catalysis and traps. SAE Technical Paper 930363... [Pg.688]

Fig. 2.21 Combined aftertreatment system for a shunting locomotive a DPF -I- SCR installed in one reactor housing, b gas flow (Picture MTU) with A exhaust gas inlet, 1 diesel oxidation catalyst (DOC), 2 diesel particulate filter (DPF), 3 urea solution Injection, 4 SCR catalyst, 5 ammonia slip catalyst (ASC), 6 urea mixing area, B exhaust gas outlet... Fig. 2.21 Combined aftertreatment system for a shunting locomotive a DPF -I- SCR installed in one reactor housing, b gas flow (Picture MTU) with A exhaust gas inlet, 1 diesel oxidation catalyst (DOC), 2 diesel particulate filter (DPF), 3 urea solution Injection, 4 SCR catalyst, 5 ammonia slip catalyst (ASC), 6 urea mixing area, B exhaust gas outlet...

See other pages where Combined exhaust gas aftertreatment is mentioned: [Pg.103]    [Pg.109]    [Pg.109]    [Pg.103]    [Pg.109]    [Pg.109]    [Pg.14]    [Pg.41]    [Pg.53]    [Pg.487]    [Pg.285]    [Pg.108]    [Pg.132]    [Pg.172]    [Pg.8]    [Pg.36]    [Pg.18]    [Pg.692]   


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