| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: system of exhaust gas advanced treatment includes diesel particulate filter assembly (DPFA) installed after diesel engine, selective catalytic reduction device (SCRD) connected to DPFA, the first injector for supply of reducing agent to exhaust gas installed after DPFA and before SCRD, at least one NOx sensor installed after SCRD for delivery of at least one signal to NOx coordinator, at least one temperature sensor installed before and/or after SCRD for delivery of at least one temperature signal to NOx coordinator which is meant for switch of diesel engine to mode of high or low level of NOx depending on values of at least of one NOx signal and of at least one temperature signal. Also method of exhaust gas advanced treatment and readable computer memory are provided. ^ EFFECT: maximising passive soot generation, maintaining minimum number of regeneration based on active O2, low flow of fuel and reducing agent while NOx emissions are kept below normal levels. ^ 35 cl, 5 dwg |
