Patent ID: 9387438
Filing Date: 2016-07-12
CPC Classification: B01D,F01N,Y02T

Claim Text:
1. An engine exhaust after-treatment system, comprising: an exhaust passage including a plurality of legs; an exhaust control valve positioned at an inlet of each of the legs, and configured to control an amount of exhaust that enters the leg; a first exhaust treatment component located within each of the legs; a desulfurization treatment component located within each of the legs downstream from the first exhaust treatment component; an alkaline reagent tank configured to provide an alkaline reagent to the desulfurization treatment component; a reagent control valve disposed between the alkaline reagent tank and the desulfurization treatment component, and configured to control an amount of alkaline reagent that enters the desulfurization component; and a controller in communication with each of the exhaust control valves and reagent control valves, wherein the controller is configured to control the exhaust control valves independently of the reagent control valves.