FIELD: technological processes.
SUBSTANCE: according to the present invention, exhaust control system comprises: the first catalytic reduction device for the reduction of nitrogen oxides NOx in the exhaust stream using compounds containing one or more of carbon monoxide CO and HC hydrocarbons, which are contained in the exhaust stream when the exhaust stream reaches the first catalytic reduction device; a particulate filter, which is located downstream from the first catalytic reduction device, in order to trap and oxidize soot particles in the exhaust stream; the second metering device located downstream from the particulate filter and made to supply an additive that contains ammonia or a substance from which ammonia can be extracted and / or released into the exhaust gas stream; and the second catalytic reduction device located downstream from the second metering device and designed to reduce nitrogen oxides NOx in the exhaust stream using above mentioned additive.
EFFECT: exhaust control system is proposed for cleaning exhaust flow.
48 cl, 7 dwg
