EXHAUST GAS PURIFICATION APPARATUS FOR ENGINE
    11.
    发明申请
    EXHAUST GAS PURIFICATION APPARATUS FOR ENGINE 失效
    用于发动机的排气净化装置

    公开(公告)号:US20110162351A1

    公开(公告)日:2011-07-07

    申请号:US13047129

    申请日:2011-03-14

    IPC分类号: F01N3/18

    摘要: In an exhaust gas purification apparatus for an engine includes a bubble generation device, the bubble generation device for mixing nano-sized to micro-sized bubbles into a liquid reducing agent or a precursor thereof injection-supplied from an injection nozzle is disposed in a reducing agent supply system running from a reducing agent tank to the injection nozzle. When the liquid reducing agent or the precursor thereof is injection-supplied from the injection nozzle, the liquid reducing agent or the precursor thereof is divided by bubbles, and the bubbles are radically inflated and burst by a pressure change and a temperature change at the time of injection-supplying, so that microparticulation of the liquid reducing agent or the precursor thereof is facilitated.

    摘要翻译: 在用于发动机的废气净化装置中,包括气泡生成装置,将从纳米尺寸的微小气泡混合成液体还原剂的气泡生成装置或其从注射喷嘴注入的前体配置在还原 代理商供应系统从还原剂罐运行到喷嘴。 当液体还原剂或其前体从注射喷嘴注入时,液体还原剂或其前体被气泡分开,并且气泡由于当时的压力变化和温度变化而发生膨胀和爆裂 的注入供给,使得液体还原剂或其前体的微粒化变得容易。

    Exhaust emission purifying apparatus
    12.
    发明授权
    Exhaust emission purifying apparatus 有权
    排气净化装置

    公开(公告)号:US07752839B2

    公开(公告)日:2010-07-13

    申请号:US12027243

    申请日:2008-02-06

    IPC分类号: F01N3/00

    摘要: An exhaust emission purifying apparatus of the present invention has a casing that includes therein a plurality of layered passages which is formed by partitioning an inside of the casing to thereby allow an exhaust passage from an exhaust emission inlet to an exhaust emission outlet to be folded in its direction once or more, a reduction catalyst that reductively purifies NOx by using a reducing agent, a nozzle that injects the reducing agent or a precursor thereof to an exhaust upstream side of the reduction catalyst, and a filter (DPF) that collects PM suspended in an exhaust emission. The reduction catalyst and the filter are disposed in the different layered passages. Consequently, a more compact exhaust emission purifying apparatus having both NOx removal function and PM collection function can be provided.

    摘要翻译: 本发明的排气净化装置具有壳体,其具有多个分层通路,该多个分层通路是通过分隔壳体的内部形成的,从而允许从废气排放入口到排气排放口的排气通道被折叠 其方向一次或多次,通过使用还原剂还原性地净化NOx的还原催化剂,将还原剂或其前体注入到还原催化剂的排气上游侧的喷嘴和收集PM悬浮的过滤器(DPF) 在废气排放。 还原催化剂和过滤器设置在不同的分层通道中。 因此,可以提供具有NOx去除功能和PM收集功能的更紧凑的排气净化装置。

    Apparatus for judging condition of injection of reducing agent incorporated in exhaust gas purification system
    14.
    发明授权
    Apparatus for judging condition of injection of reducing agent incorporated in exhaust gas purification system 有权
    用于判断废气净化系统中所含还原剂注入状况的装置

    公开(公告)号:US07975470B2

    公开(公告)日:2011-07-12

    申请号:US11880858

    申请日:2007-07-23

    IPC分类号: F01N3/00

    摘要: In relation to an exhaust gas purification system that mixes a liquid reducing agent with air and injection-supplies this mixture into an exhaust gas flowing on an upstream side of a reduction catalyst (20) to thereby effect reduction purification of NOx in exhaust gas, a technical attention is directed to the relation of respective elements of; the travel distance, the fuel consumption, the air consumption, or the running time and the like, and the liquid reducing agent consumption, to constitute a configuration such that a continual monitor as to whether the injection condition of liquid reducing agent is normal or abnormal is executed by judging whether or not the amount of liquid reducing agent consumed for a predetermined travel distance, a predetermined fuel consumption, a predetermined air consumption, or a predetermined running time, is within a predetermined range.

    摘要翻译: 关于将液体还原剂与空气混合并将该混合物注入到在还原催化剂(20)的上游侧流动的排气的排气净化系统,从而进行废气中的NOx的还原净化, 技术上的注意力是针对各自元素的关系; 行驶距离,燃料消耗量,空气消耗量或运行时间等以及液体还原剂消耗量,构成对连续监视液体还原剂的注入状态是正常还是异常的结构 通过判断在预定行驶距离,预定燃料消耗,预定空气消耗或预定运行时间消耗的液体还原剂的量是否在预定范围内来执行。

    Exhaust gas purification apparatus of engine
    15.
    发明授权
    Exhaust gas purification apparatus of engine 有权
    发动机废气净化装置

    公开(公告)号:US07584604B2

    公开(公告)日:2009-09-08

    申请号:US10572545

    申请日:2004-09-02

    IPC分类号: F01N3/00

    摘要: For preventing clogging in an injection nozzle for supplying a reducing agent to exhaust gas flow on an upstream side of a reducing catalyst and for improving the efficiency of NOx purification processing, the injection nozzle 14 has a tip end portion 18 provided with a ring shaped protruding ridge 19 disposed on an outer peripheral surface of an exhaust gas downstream side end portion of the tip end portion 18 that is arranged substantially in parallel with an exhaust gas flow direction A inside an exhaust pipe 13, the ring shaped protruding ridge 19 being provided with injection hole or holes 20 drilled outward from the central axis of the injection nozzle 14, so that the reducing agent is ejected on the exhaust gas upstream side of the reduction catalyst, from the injection holes 20. The injection holes 20 do not directly open on a wide outer peripheral surface of the injection nozzle 14, and then when injection stops, the reducing agent does not become attached to or does not remain around the injection holes 20, or the remaining amount thereof becomes small, so that clogging of the injection holes 20 of the injection nozzle 14 is prevented, and the efficiency of NOx purification processing is improved.

    摘要翻译: 为了防止用于向还原催化剂的上游侧的废气流供给还原剂的喷嘴中的堵塞,并且为了提高NOx净化处理的效率,喷嘴14具有前端部18,其具有环状的突出部 脊部19配置在前端部18的排气下游侧端部的外周面上,该排气管下游侧端部与排气管13内的排气流动方向A大致平行地配置,环状突脊19设置有 从注射喷嘴14的中心轴线向外钻出的喷射孔或孔20,使得还原剂从喷射孔20喷射到还原催化剂的废气上游侧。喷射孔20不直接打开 注射喷嘴14的宽外周面,然后当注射停止时,还原剂不会附着或不附着 n,或者其剩余量变小,从而防止喷嘴14的喷射孔20的堵塞,并且提高NOx净化处理的效率。

    Exhaust emission purifying apparatus for engine
    16.
    发明授权
    Exhaust emission purifying apparatus for engine 有权
    发动机排气净化装置

    公开(公告)号:US07500355B2

    公开(公告)日:2009-03-10

    申请号:US11392636

    申请日:2006-03-30

    IPC分类号: F01N3/00

    摘要: In order to suppress deposition of constituent of a reducing agent (dissolved matter) in an exhaust passage of an engine enhancing an elimination rate of NOx even when temperature of an exhaust emission from the engine is low, an exhaust emission purifying apparatus is provided with an electro-generative-heat carrier provided on an upstream side of an injection nozzle that supplies the reducing agent into the exhaust emission on upstream side of a reduction catalyst in an exhaust pipe, the exhaust emission being heated to a temperature equal to or higher than a melting point of the dissolved matter whereby deposition of the dissolved matter on an inner wall surface of the exhaust pipe is suppressed to effectively use the supplied reducing agent for catalytic reduction reaction, even when the exhaust emission temperature is lower than the melting point of the dissolved matter of the reducing agent.

    摘要翻译: 为了抑制即使在来自发动机的排气的温度低的情况下也能够提高NOx的消除率的发动机的排气通路中的还原剂(溶解物质)的成分的沉积,所以排气净化装置具备 设置在喷射喷嘴的上游侧的电生热载体,其将还原剂供给到排气管中的还原催化剂的上游侧的废气排放中,将排气排放加热至等于或高于 溶解物的熔点,由此抑制溶解物在排气管的内壁面上的沉积,即使排气排出温度低于溶解的熔点,也能有效地利用供给的还原剂进行催化还原反应 还原剂的物质。

    Exhaust gas purification apparatus of engine
    17.
    发明申请
    Exhaust gas purification apparatus of engine 有权
    发动机废气净化装置

    公开(公告)号:US20070101700A1

    公开(公告)日:2007-05-10

    申请号:US10572545

    申请日:2004-09-02

    IPC分类号: F01N3/10 F01N3/00

    摘要: For preventing clogging in an injection nozzle for supplying a reducing agent to exhaust gas flow on an upstream side of a reducing catalyst and for improving the efficiency of NOx purification processing, the injection nozzle 14 has a tip end portion 18 provided with a ring shaped protruding ridge 19 disposed on an outer peripheral surface of an exhaust gas downstream side end portion of the tip end portion 18 that is arranged substantially in parallel with an exhaust gas flow direction A inside an exhaust pipe 13, the ring shaped protruding ridge 19 being provided with injection hole or holes 20 drilled outward from the central axis of the injection nozzle 14, so that the reducing agent is ejected on the exhaust gas upstream side of the reduction catalyst, from the injection holes 20. The injection holes 20 do not directly open on a wide outer peripheral surface of the injection nozzle 14, and then when injection stops, the reducing agent does not become attached to or does not remain around the injection holes 20, or the remaining amount thereof becomes small, so that clogging of the injection holes 20 of the injection nozzle 14 is prevented, and the efficiency of NOx purification processing is improved.

    摘要翻译: 为了防止用于向还原催化剂的上游侧的废气流供给还原剂的喷嘴中的堵塞,并且为了提高NOx净化处理的效率,喷嘴14具有前端部18,其具有环状的突出部 脊部19配置在前端部18的排气下游侧端部的外周面上,该排气管下游侧端部与排气管13内的排气流动方向A大致平行地配置,环状突脊19设置有 从注射喷嘴14的中心轴线向外钻出的喷射孔或孔20,使得还原剂从喷射孔20喷射到还原催化剂的废气上游侧。喷射孔20不直接打开 注射喷嘴14的宽外周面,然后当注射停止时,还原剂不会附着或不附着 n,或者其剩余量变小,从而防止喷嘴14的喷射孔20的堵塞,并且提高NOx净化处理的效率。

    Exhaust emission purifying apparatus for engine
    18.
    发明申请
    Exhaust emission purifying apparatus for engine 有权
    发动机排气净化装置

    公开(公告)号:US20070000240A1

    公开(公告)日:2007-01-04

    申请号:US11495643

    申请日:2006-07-31

    IPC分类号: F01N3/00 F01N3/10

    摘要: An exhaust emission purifying apparatus for an engine having: a reduction catalytic converter disposed in an exhaust system of the engine, for reductively purifying nitrogen oxides in the exhaust emission with a reducing agent; an injection nozzle for injection-supplying the reducing agent to an exhaust upstream side of the reduction catalytic converter in an exhaust pipe of the exhaust system; and a reducing agent supply device supplying the reducing agent to the injection nozzle, in which a recess portion is formed on an inner wall on a lower portion of the exhaust pipe, by concaving a site to which at least the reducing agent injection-supplied from the injection nozzle is attached, and also, a bottom wall of the recess portion is made detachable.

    摘要翻译: 一种用于发动机的排气净化装置,具有:还原催化转化器,其设置在发动机的排气系统中,用还原剂还原性地净化排气中的氮氧化物; 用于在所述排气系统的排气管中向所述还原催化转化器的排气上游侧注入还原剂的喷嘴; 以及将还原剂供给到喷嘴的还原剂供给装置,其中,在排气管的下部的内壁上形成有凹部,通过将至少从所述喷嘴供给的还原剂 安装注射喷嘴,并且凹部的底壁也是可拆卸的。

    Exhaust emission purifying apparatus for engine
    19.
    发明授权
    Exhaust emission purifying apparatus for engine 有权
    发动机排气净化装置

    公开(公告)号:US08790219B2

    公开(公告)日:2014-07-29

    申请号:US13162725

    申请日:2011-06-17

    IPC分类号: F16H59/74

    摘要: In order to maintain a high NOx purification rate of a NOx reduction catalytic converter even in the case in which an NOx emission amount from an engine changes suddenly, in an exhaust emission purifying apparatus for an engine that reduces and purifies NOx in exhaust gas using ammonia generated from an injection-supplied urea aqueous solution, after engine starting, when an exhaust temperature exceeds a predetermined temperature T (step S1), an amount of urea aqueous solution corresponding to an actual engine operating state is injection-supplied (steps S3 to S5). On the other hand, at a change of the transmission speed ratio based on a driver's shift operation, an engine operating state after the change of the transmission speed ratio is predicted (steps S2, S6), and an amount of urea aqueous solution corresponding to the predicted engine operating state is injection-supplied before the change of the transmission speed ratio is completed (steps S7, S8).

    摘要翻译: 即使在来自发动机的NOx排放量突然变化的情况下,为了维持NOx还原催化转化器的高NOx净化率,在使用氨还原和净化废气中的NOx的发动机的排气净化装置中 在发动机起动之后,当排气温度超过规定温度T时(步骤S1),喷射供给对应于实际发动机运转状态的尿素水溶液的量(步骤S3〜S5) )。 另一方面,在基于驾驶员换档操作的变速比的变化中,预测变速比变化后的发动机运转状态(步骤S2,S6),并且对应于 预测的发动机运转状态在传动变速比的变化完成之前被喷射供给(步骤S7,S8)。