| 摘要 |
An exhaust aftertreatment system 100 comprises a first and second passageways 112a, 112b to receive first and second (parallel) portions of exhaust gas from an engine 10. First and second selective catalytic reduction (SCR) systems 150a, 150b are fluidly coupled to the first and second passageways respectively to receive and treat the respective first and second portions of exhaust gas. A plurality of sensors 153, 155, 157, 159 are disposed on the first passageway and/or the first SCR system to sense operational parameters of the first portion of exhaust gas. A controller 170, in electronic communication with the sensors, determines the operational parameters of the first portion of exhaust gas based on signals from the sensors, and determines operational parameters of the second portion of the exhaust gas based upon the first operational parameters. The first and second passageways me be (about) the same length, or the y may be different lengths. The sensors may include at least one of a temperature, NOx, ammonia and oxygen sensor. |
