Vanadate SCR for low N 2 O: KSCR4.2A/C KSCR4.2A -> SCR1 in Concept 1 • operates from start of dosing up to 400°C • HT stable up to 500°C • High sulfur resistance • Operates mainly in cold start and low load • KSCR4.2C -> SCR2 in Concept 2 • operates from start of 2nd dosingup to 550°C • HT stable up to 600°C • High sulfur resistance • Operates in normal mode KSCR3.3: High DeNOx at low NO 2 over wide temperature range On 4,4L engine without DOC Size: 9.5‘‘x7.5‘‘ – 600cpsi SCR2 in Concept 1 or cc-SCR in Concept 2 SV: 15.000 -> 50.000 1/h Simulation result cWHTC with e-heater Pre box: E-heater + cc-DOC Main box: SCR1 + cDPF + SCR2/ASC NOx conversion after SCR1 = KSCR4.2A • SCR1: 7,5‘‘x5‘‘, SCR2 9.5“x6“ • ANR_1 = 0.85, ANR_2 = 1.2 • inject temperature = 180 °C • NOx conversion = 99% • total N 2 O production: 0.1408 g/test, 14mg/kWh after SCR2 = KSCR3.3 N 2 O production Dinex.net
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