Method for controlling injection of reducing agent in exhaust gas from a combustion engine
    41.
    发明授权
    Method for controlling injection of reducing agent in exhaust gas from a combustion engine 有权
    用于控制来自内燃机的废气中的还原剂的注入的方法

    公开(公告)号:US07200990B2

    公开(公告)日:2007-04-10

    申请号:US11288152

    申请日:2005-11-29

    IPC分类号: F01N3/00

    摘要: The invention relates to a method for controlling injection of a reductant into a NOx containing exhaust gas stream from a combustion engine, where combustion of a known fuel takes place and where the NOx is reduced by selective catalytic reduction, SCR, in the presence of a SCR catalyst, comprising establishing signals related to exhaust gas flow, HOx concentration in the exhaust gas stream upstream of the catalyst, exhaust gas temperature upstream of the SCR catalyst, exhaust gas temperature downstream of the SCR catalyst and to input data for catalyst characteristics. From the signals an adjusted amount of the reductant is calculated by using a calculated amount of reductant and a value d(E*T)/dt, where E is the exhaust gas flow, T is the exhaust gas temperature upstream of the catalyst and t is time.

    摘要翻译: 本发明涉及一种用于控制将还原剂注入含有来自内燃机的含NO x的废气流的方法,其中发生已知燃料的燃烧,其中NO x 在SCR催化剂的存在下,通过选择性催化还原SCR来还原SUB,其包括在催化剂上游的排气流中建立与废气流,HO x x H浓度相关的信号,排气 SCR催化剂上游的温度,SCR催化剂下游的排气温度和输入催化剂特性的数据。 根据该信号,通过使用计算量的还原剂和d(E * T)/ dt计算还原剂的调整量,其中E是排气流量,T是催化剂上游的排气温度,t 是时候了

    EXHAUST DEVICE OF STRADDLE-TYPE VEHICLE
    46.
    发明申请

    公开(公告)号:US20190017428A1

    公开(公告)日:2019-01-17

    申请号:US16016170

    申请日:2018-06-22

    发明人: Yoshinori SUGI

    IPC分类号: F01N13/04 F01N1/08

    摘要: There is provided an exhaust device of a straddle-type vehicle. A first muffler body is arranged at one side, at which a drive chain is not arranged, in a region at the rear of a chamber. A second muffler body is arranged at another side, at which the drive chain is arranged. A first connection pipe interconnects the chamber and the first muffler body. A second connection pipe interconnects the chamber and the second muffler body. An exhaust control valve is configured to control a flow rate of exhaust air to circulate from an exhaust port toward the first muffler body via an exhaust pipe, the chamber and the first connection pipe. A part or all of the second connection pipe is formed to have a pipe shape by two or more plate materials, and has a non-true circular cross-sectional surface shape.