Device and method for impacting the amount of nitrogen oxides in exhaust gases from an internal combustion engine
Номер патента: EP3111072A1
Опубликовано: 04-01-2017
Автор(ы): Henrik BIRGERSSON, Magnus Nilsson
Принадлежит: SCANIA CV AB
Опубликовано: 04-01-2017
Автор(ы): Henrik BIRGERSSON, Magnus Nilsson
Принадлежит: SCANIA CV AB
Реферат: According to the present invention a method and an exhaust treatment system, are provided for treatment of an exhaust, stream, which results from a combustion in a combustion engine, and comprises nitrogen oxides N0X. The method comprises a first impact on a first amount of nitrogen oxides NOx_1, reaching a first device arranged in the exhaust, treatment system. This first impact is carried out through the use of at least one of a NO x -storing catalyst NCC, and a first slip- cata1yst SC 1 arranged in the first device. An K0x-storing catalyst NCC may here carry out a storage of nitrogen oxides NO X . The first, slip-catalyst SC 1 may carry out a reduction of nitrogen oxides N0 x , and/or an oxidation of potential additive in the exhaust stream through the exhaust system. This first impact is actively controlled, based at least on the first amount of nitrogen oxides N0 X-1 reaching the first, device. The method also comprises a second impact on a second amount of nitrogen oxides N0 x_2 reaching a second device, arranged downstream of the first device. The active control of the first impact may, according to different embodiments of the present invention, be carried out through an active control of the dosage of additive at the first device, and/or through an active control of an exhaust environment, comprising, for example, a temperature for the exhaust stream at the first device.
Nitrogen oxide emission control system and method for internal combustion engine
Номер патента: RU2670480C2. Автор: Магнус НИЛЬССОН,Хенрик БИРГЕРССОН. Владелец: Сканиа Св Аб. Дата публикации: 2018-10-23.