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    • 2. 发明专利
    • Exhaust gas purification catalyst
    • 排气净化催化剂
    • JP2013044283A
    • 2013-03-04
    • JP2011182590
    • 2011-08-24
    • Toyota Industries Corp株式会社豊田自動織機Toyota Motor Corpトヨタ自動車株式会社
    • SONE HIROTAKATAKEUCHI MASAHIKOOGAWARA SEIJIASANUMA TAKAMITSUISHIKAWA MICHIO
    • F01N3/28B01D53/94B01J23/44B01J35/04
    • B01J23/63B01D53/944B01D2255/1021B01D2255/1023B01D2255/9032B01J23/40B01J23/42B01J23/44B01J37/0244B01J37/0248
    • PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst that can reduce a quantity of noble metal carried by a carrier base material while preventing exhaust gas purifying performance from degrading.SOLUTION: Dashed lines 11, 12 and 13 indicating relation between a temperature on the downstream 7 and conversion efficiency when the quantity of noble metal carried on the downstream 7 is varied are drawn on the right-hand side of a solid line 10 indicating relation between a temperature on the upstream 6 and the conversion efficiency. The dashed line 12 shows a smaller quantity of the noble metal carried on the downstream 7 than the quantity indicated by the dashed line 11, while the dashed line 13 shows a smaller quantity of the noble metal carried on the downstream 7 than the quantity indicated by the dashed line 12. Where the temperature of exhaust gas flowing into the upstream 6 is 168°C and the temperature of the exhaust gas rises by ΔT°C by purifying reaction while the exhaust gas flows through the upstream 6, (168+ΔT)°C is attained. Thus, the dashed lines 11 and 12 refer to a case where the conversion efficiency on the downstream 7 is saturated, and at least the quantity of the noble metal shown by the dashed line 12 just need to be carried on the downstream 7.
    • 解决问题:提供一种排气净化催化剂,其可以减少由载体基材承载的贵金属的量,同时防止排气净化性能降低。 解决方案:指示下游7的温度与下游7所携带的贵金属的量之间的转换效率的变化关系的虚线11,12,13示于实线10的右侧 指示上游6的温度与转换效率之间的关系。 虚线12表示在下游7上承载的贵金属的量比虚线11所示的数量少,而虚线13表示比下游7所携带的贵金属少的量比由 虚线12.当排气流过上游6时(168 +ΔT),通过净化反应,流入上游侧6的排气温度为168℃,排气温度上升ΔT℃, ℃。 因此,虚线11和12是指下游7的转换效率饱和的情况,并且至少虚线12所示的贵金属的数量只需要在下游7上承载。

      版权所有(C)2013,JPO&INPIT

    • 4. 发明专利
    • Exhaust emission control device of internal combustion engine
    • 内燃机排气控制装置
    • JP2010053712A
    • 2010-03-11
    • JP2008216780
    • 2008-08-26
    • Toyota Motor Corpトヨタ自動車株式会社
    • NISHIOKA HIROMASAHIROTA SHINYAASANUMA TAKAMITSUYOSHIDA KOHEIOTSUKI HIROSHINAKATA YUKA
    • F01N3/08B01D53/94F01N3/02F01N3/20F01N3/24F01N3/36
    • PROBLEM TO BE SOLVED: To highly maintain the NOx conversion ratio of an NOx storage-reduction catalyst, by reducing SOx stored in the NOx storage-reduction catalyst, by restraining the SOx from being discharged from an SOx trap catalyst.
      SOLUTION: An upstream side NOx storage-reduction catalyst 27u and a downstream side An upstream side NOx storage-reduction catalyst 27d are arranged in series in an engine exhaust passage, and the SOx trap catalyst 26 capturing the SOx included in exhaust gas, is arranged in the engine exhaust passage upstream of the upstream side NOx storage-reduction catalyst 27u. An upstream side fuel adding valve 32u is arranged in the exhaust passage upstream of the SOx trap catalyst 26, and a downstream side fuel adding valve 32d is arranged in the exhaust passage between the mutual NOx storage-reduction catalysts 27u and 27d. The NOx conversion ratio of the upstream side NOx storage-reduction catalyst 27u is detected, and a fuel adding quantity from the upstream side fuel adding valve 32u and a fuel adding quantity from the downstream side fuel adding valve 32d when NOx discharge processing must be performed, are respectively set based on the detected NOx conversion ratio.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了通过抑制SO x从SO x捕集催化剂排出,通过减少存储在NOx储存还原催化剂中的SOx来高度维持NOx储存还原催化剂的NOx转化率。 解决方案:上游侧NOx还原催化剂27u和下游侧上游侧NOx吸留还原催化剂27d串联配置在发动机排气通路内,SO X捕集催化剂26捕获废气中包含的SO x 配置在上游侧NOx吸留还原催化剂27u上游的发动机排气通路中。 上游侧燃料添加阀32u配置在SO x捕集催化剂26的上游侧的排气通路中,下游侧燃料添加阀32d配置在排出通路内,在相互的NOx吸留还原催化剂27u,27d之间。 检测上游侧NOx还原催化剂27u的NOx转化率,并且必须进行NOx排出处理时来自上游侧燃料添加阀32u的燃料添加量和来自下游侧燃料添加阀32d的燃料添加量 分别基于检测到的NOx转化率来设定。 版权所有(C)2010,JPO&INPIT
    • 5. 发明专利
    • Exhaust emission control device for internal combustion engine
    • 用于内燃机的排气排放控制装置
    • JP2009264312A
    • 2009-11-12
    • JP2008116932
    • 2008-04-28
    • Toyota Motor Corpトヨタ自動車株式会社
    • KURISAKA ITSUYAASANUMA TAKAMITSUOHASHI NOBUMOTOIIDA SHINGO
    • F01N3/24B01D46/42B01D53/86B01D53/94F01N3/02F01N3/08F01N3/20
    • PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine capable of performing S regeneration control while preventing excessive temperature rise of a filter. SOLUTION: The exhaust emission control device for the internal combustion engine is provided with a NOx storage reduction catalyst storing and reducing NOx in an exhaust passage and a filter disposed at a downstream of the NOx storage reduction catalyst and collecting particulate matter in exhaust gas. The exhaust emission control device for the internal combustion engine includes a control means such as ECU. The control means performs sulfur regeneration control of the NOx storage reduction catalyst after reducing accumulation quantity of particulate matter on the filter to a prescribed quantity. Consequently, S regeneration control can be performed while preventing excessive temperature rise of the filter. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够在防止过滤器过度升温的同时执行S再生控制的内燃机的废气排放控制装置。 解决方案:用于内燃机的废气排放控制装置设置有NOx吸留还原催化剂,其存储和还原排气通道中的NOx和设置在NOx储存还原催化剂的下游并且收集排气中的颗粒物质的过滤器 加油站。 用于内燃机的废气排放控制装置包括诸如ECU的控制装置。 控制装置在将过滤器上的颗粒物质的累积量减少到规定量之后,进行NOx储存还原催化剂的硫再生控制。 因此,可以在防止过滤器过度升温的同时进行S再生控制。 版权所有(C)2010,JPO&INPIT
    • 7. 发明专利
    • Exhaust gas purifier for internal combustion engine
    • 用于内燃机的排气净化器
    • JP2009236031A
    • 2009-10-15
    • JP2008083894
    • 2008-03-27
    • Toyota Motor Corpトヨタ自動車株式会社
    • NAKATA YUKANISHIOKA HIROMASAOTSUKI HIROSHIYOSHIDA KOHEIASANUMA TAKAMITSU
    • F01N3/24B01D53/94F01N3/08F01N3/20F01N3/28
    • Y02A50/2322
    • PROBLEM TO BE SOLVED: To provide a technology capable of promptly raising the temperature of a catalyst disposed under a floor, in an exhaust gas purifier for an internal combustion engine. SOLUTION: The exhaust gas purifier for the internal combustion engine, comprises one or more under-floor catalysts 5 provided in an exhaust passage 2 of the internal combustion engine 1 and at a part passing through a lower side of a floor 101 of a vehicle on which the internal combustion engine 1 is mounted, and purifying exhaust gas; a front-stage catalyst 3 provided in the exhaust passage 2 of the internal combustion engine 1 and at a part upstream of the part passing through the lower side of the floor 101 of the vehicle 100; and an adsorption device 4 provided immediately upstream of at least one of the under-floor catalyst 5 and raising temperature by adsorbing predetermined components of the exhaust gas flowing therein to produce heat. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种在内燃机的排气净化器中能够迅速提高布置在地板下方的催化剂的温度的技术。 解决方案:用于内燃机的排气净化器包括设置在内燃机1的排气通道2中的一个或多个地板下催化剂5,以及穿过内燃机1的底板101的下侧的部分 安装有内燃机1的车辆,净化废气; 设置在内燃机1的排气通路2中的前段催化剂3和通过车辆100的底板101的下侧的部分的上游的部分; 以及吸附装置4,其通过吸附在其中流动的排气的预定成分产生热量而紧邻至少一个底板下催化剂5的上游和升温。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • Exhaust emission control device for internal combustion engine
    • 用于内燃机的排气排放控制装置
    • JP2009209733A
    • 2009-09-17
    • JP2008052422
    • 2008-03-03
    • Toyota Motor Corpトヨタ自動車株式会社
    • NISHIOKA HIROMASAASANUMA TAKAMITSUYOSHIDA KOHEIOTSUKI HIROSHINAKATA YUKA
    • F01N3/24F01N3/08F01N3/18F01N3/20
    • Y02T10/47
    • PROBLEM TO BE SOLVED: To provide technology capable of inhibiting drop of exhaust emission control performance in an exhaust emission control device for an internal combustion engine. SOLUTION: This device is provided with: an exhaust emission control catalyst 6 provided in an exhaust gas passage of the internal combustion engine and purifying exhaust gas; an adsorption device 5 which is provided at an upstream of the exhaust emission control catalyst and of which temperature rises to upper limit temperature due to heat generation by adsorption of flowing-in first component and drops after reaching the upper limit temperature; and a heat generation component supply means 10 supplying second component generating reaction heat in the exhaust emission control catalyst before start of temperature drop of the adsorption device. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供能够抑制内燃机排气排放控制装置中排气排放控制性能下降的技术。 解决方案:该装置设置有:排气排放控制催化剂6,其设置在内燃机的废气通道中并净化废气; 吸附装置5,其设置在废气排放控制催化剂的上游,并且由于通过吸入流入的第一成分而产生的热量,温度上升到上限温度,并且在达到上限温度后下降; 以及在吸附装置的温度下降开始之前,在废气排放控制催化剂中供给产生反应热的第二成分的发热成分供给装置10。 版权所有(C)2009,JPO&INPIT