EXHAUST TREATMENT SYSTEM AND METHOD FOR TREATMENT OF AN EXHAUST STREAM
    43.
    发明公开
    EXHAUST TREATMENT SYSTEM AND METHOD FOR TREATMENT OF AN EXHAUST STREAM 审中-公开
    排气处理系统和用于处理排气流的方法

    公开(公告)号:EP3111067A1

    公开(公告)日:2017-01-04

    申请号:EP15755785.1

    申请日:2015-02-27

    Applicant: Scania CV AB

    Abstract: An exhaust treatment system is provided for treatment of an exhaust stream, where the system comprises a first dosage device, arranged to supply a first additive into said exhaust stream and a first reduction catalyst device, arranged downstream for reduction of nitrogen oxides in said exhaust stream through the use of said first additive, and for the generation of heat through at least one exothermal reaction with said exhaust stream. A particulate filter arranged downstream of said first reduction catalyst device to catch soot particles. A second dosage device arranged downstream of said particulate filter to supply a second additive into said exhaust stream and a second reduction catalyst device, arranged downstream of said second dosage device for reduction of nitrogen oxides in said exhaust stream through the use of at least one of said first and said second additive.

    Abstract translation: 本排气处理系统包括: - 第一氧化催化剂(311),其布置成氧化包含氮,碳和氢中的一种或几种的化合物; - 第一剂量装置(371),布置在所述第一氧化催化剂(311)的下游,并且布置成将第一添加剂供应到排气流中; - 布置在所述第一剂量装置下游的第一还原催化剂装置(331),其包括主要用于还原氮氧化物(NOx)的滑动催化剂,并且其次用于氧化添加剂; - 布置在所述第一还原催化剂(331)下游的第二氧化催化剂(312); - 布置在所述第二氧化催化剂(312)下游的微粒过滤器(320); - 第二剂量装置(372),其布置在所述颗粒过滤器(320)的下游,并且布置成将第二添加剂供应到所述排气流中; - 布置在所述第二剂量装置(372)下游的第二还原催化剂装置(332),并且布置成通过使用所述第一添加剂和所述第二添加剂中的至少一种来减少所述排气流中的氮氧化物。

    EXHAUST GAS CONTROL APPARATUS
    47.
    发明公开
    EXHAUST GAS CONTROL APPARATUS 审中-公开
    排气控制装置

    公开(公告)号:EP3064728A1

    公开(公告)日:2016-09-07

    申请号:EP16158255.6

    申请日:2016-03-02

    Inventor: OTA, Hirohiko

    Abstract: An exhaust gas control apparatus includes an exhaust passage (19), a urea water tank (45), a urea adding valve (40), a urea pump (47), a pipe (46), and an electronic control unit (56). The electronic control unit (56) is configured to drive the urea pump (47) as a filling control when a condition requiring an execution of urea water addition by the urea adding valve (40) is satisfied such that the pipe (46) is filled with the urea water. The electronic control unit (56) is configured to execute the filling control when an exhaust pressure of the exhaust passage (19) is equal to or less than a specified value. The electronic control unit (56) is configured to stop the filling control when the exhaust pressure of the exhaust passage (19) exceeds the specified value during the execution of the filling control.

    Abstract translation: (19),尿素水箱(45),尿素添加阀(40),尿素泵(47),配管(46)以及电子控制单元(56)构成排气控制装置, 。 电子控制单元(56)构成为,在满足由尿素添加阀(40)执行尿素水添加的条件成立时,驱动尿素泵(47)作为填充控制,填充配管(46) 用尿素水。 电子控制单元(56)构成为在排气通路(19)的排气压力为规定值以下时执行填充控制。 电子控制单元(56)构造成在执行填充控制期间当排气通道(19)的排气压力超过规定值时停止填充控制。

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