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181 条记录 (耗时 0.031 秒)

    Catalyst with upstream cooling and downstream heating
    51.
    发明授权
    Catalyst with upstream cooling and downstream heating 失效
    具有上游冷却和下游加热的催化剂

    公开(公告)号：US6029443A

    公开(公告)日：2000-02-29

    申请号：US861292

    申请日：1997-05-21

    申请人： Shinya Hirota ,  Toshiaki Tanaka ,  Satoshi Iguchi ,  Tatsuji Mizuno ,  Kazuya Kibe

    发明人： Shinya Hirota ,  Toshiaki Tanaka ,  Satoshi Iguchi ,  Tatsuji Mizuno ,  Kazuya Kibe

    IPC分类号： F01N3/08 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N3/36 ,  F01N9/00 ,  F01N3/10

    CPC分类号： F01N3/2046 ,  F01N3/2006 ,  F01N3/2013 ,  F01N9/00 ,  F01N2240/02 ,  F01N2260/02 ,  F01N2260/022 ,  F01N2260/024 ,  F01N2570/14 ,  Y02T10/26 ,  Y02T10/47

    摘要： According to the present invention, there is provided an exhaust gas purification device for an engine having an exhaust passage, the device comprising a catalyst arranged in the exhaust passage and having an upstream end and a downstream end, a purification ratio of exhaust gas by the catalyst becoming more than a predetermined ratio when a temperature of the catalyst is within a predetermined temperature range, cooling means for cooling the upstream end of the catalyst, heating means for heating the downstream end of the catalyst, and control means for controlling the cooling means and the heating means to maintain the temperature of a portion of the catalyst, which portion is positioned between the upstream end and the downstream end, in the predetermined temperature range.

    摘要翻译： 根据本发明，提供一种用于具有排气通道的发动机的排气净化装置，该排气净化装置包括布置在排气通道中并具有上游端和下游端的催化剂，排气的净化比由 当催化剂的温度在预定的温度范围内时催化剂变得大于预定的比例，用于冷却催化剂的上游端的冷却装置，用于加热催化剂的下游端的加热装置，以及用于控制冷却装置的控制装置 以及加热装置，将该部分位于上游端和下游端之间的部分催化剂的温度保持在预定温度范围内。

    Exhaust gas purification device for an internal combustion engine
    52.
    发明授权
    Exhaust gas purification device for an internal combustion engine 失效
    内燃机用废气净化装置

    公开(公告)号：US5974791A

    公开(公告)日：1999-11-02

    申请号：US28916

    申请日：1998-02-24

    申请人： Shinya Hirota ,  Toshiaki Tanaka

    发明人： Shinya Hirota ,  Toshiaki Tanaka

    IPC分类号： F01N3/02 ,  B01D53/56 ,  B01D53/81 ,  B01D53/86 ,  B01D53/94 ,  F01N3/027 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F01N3/30 ,  F01N13/04 ,  F02D41/02 ,  F02D41/40 ,  F01N3/00

    CPC分类号： F02D41/405 ,  B01D53/8696 ,  B01D53/9495 ,  F01N13/011 ,  F01N3/0253 ,  F01N3/027 ,  F01N3/0842 ,  F01N3/0878 ,  F01N3/0885 ,  F02D41/028 ,  F02D41/029 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D53/945 ,  F01N2560/026 ,  F01N2570/04 ,  F01N2610/03 ,  F01N3/30 ,  F02D2200/0818 ,  Y02T10/22 ,  Y02T10/44

    摘要： In an exhaust gas purification device, an exhaust gas passage of a diesel engine diverges into two branch pipes and a particulate filter (DPF) is disposed in each of the branch pipes. The DPF uses a metallic substrate and NO.sub.x absorbent is attached to the wall of the paths in the DPF. Therefore, the DPF act as both a normal particulate filter and a NO.sub.x absorbent. During the operation of the engine, SO.sub.x, as well as NO.sub.x, in the exhaust gas is absorbed in the NO.sub.x absorbent in the DPF. An electronic control unit (ECU) monitors the amount of SO.sub.x absorbed in the DPF during the operation and, when the amount of SO.sub.x absorbed in one DPF increases, switches the exhaust gas flow to the other DPF. The ECU further performs the SO.sub.x recovery operation to release the absorbed SO.sub.x from the DPF. After completing the SO.sub.x recovery operation, the ECU performs the regenerating operation of the DPF in which the particulate matter trapped in the DPF is burned. Since SO.sub.x in DPF is already released by the previous SO.sub.x recovery operation when the regenerating operation of the DPF is performed, the growth of sulfate particle in the DPF does not occur even if the DPF is exposed to a high temperature lean air-fuel ratio atmosphere of the regenerating operation.

    摘要翻译： 在废气净化装置中，柴油发动机的排气通路分叉成两根分支管，在各支管中设置有微粒过滤器（DPF）。 DPF使用金属基材，并且NOx吸收剂附着到DPF中的路径的壁上。 因此，DPF充当正常的微粒过滤器和NOx吸收剂。 在发动机运转中，废气中的SOx以及NOx被DPF中的NOx吸收剂吸收。 电子控制单元（ECU）监视在操作期间在DPF中吸收的SOx的量，并且当在一个DPF中吸收的SOx量增加时，将废气流切换到另一个DPF。 ECU进一步执行SOx恢复操作以从DPF释放吸收的SOx。 在完成SOx恢复操作之后，ECU执行DPF中被捕获的颗粒物质燃烧的DPF的再生操作。 由于在执行DPF的再生操作时，通过先前的SOx回收操作已经释放了DPF中的SOx，所以即使DPF暴露于高温稀空燃比气氛下也不会发生DPF中硫酸盐颗粒的生长 的再生作业。

    Exhaust purification device of internal combustion engine
    56.
    发明授权
    Exhaust purification device of internal combustion engine 有权
    内燃机排气净化装置

    公开(公告)号：US08534051B2

    公开(公告)日：2013-09-17

    申请号：US12740138

    申请日：2008-12-26

    申请人： Kenichi Tsujimoto ,  Mikio Inoue ,  Shinya Hirota

    发明人： Kenichi Tsujimoto ,  Mikio Inoue ,  Shinya Hirota

    IPC分类号： F01N3/00

    CPC分类号： F01N3/2033 ,  F01N3/025 ,  F01N3/035 ,  F01N3/0871 ,  F01N3/0885 ,  F01N3/208 ,  F01N9/00 ,  F01N9/002 ,  F01N2240/30 ,  F01N2610/03 ,  F02D41/0245 ,  F02D41/402 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

    摘要： An internal combustion engine in an engine exhaust passage of which an exhaust purification catalyst (13) having an oxidation function is arranged and in the engine exhaust passage upstream of the exhaust purification catalyst (13) of which a small-sized oxidation catalyst (14) and a fuel feed valve (15) for feeding fuel to the small-sized oxidation catalyst (14) are arranged. When activating the exhaust purification catalyst (13), the fuel fed from the fuel injector (15) is used to heat the small-sized oxidation catalyst (14) and when the exhaust purification catalyst (13) is further raised in temperature, the fuel fed from the fuel feed valve (15) is increased and reformed fuel is exhausted from the small-sized oxidation catalyst (14).

    摘要翻译： 在排气净化催化剂（13）的上游配置有小型氧化催化剂（14）的发动机排气通路中，具有氧化功能的排气净化催化剂（13）的发动机排气通路内的内燃机， 和用于向小型氧化催化剂（14）供给燃料的燃料供给阀（15）。 当激活排气净化催化剂（13）时，使用从燃料喷射器（15）供给的燃料来加热小型氧化催化剂（14），并且当排气净化催化剂（13）进一步升温时，燃料 从燃料供给阀15供给的重整燃料从小型氧化催化剂（14）排出。

    EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE
    60.
    发明申请
    EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号：US20120000190A1

    公开(公告)日：2012-01-05

    申请号：US13255189

    申请日：2010-03-10

    申请人： Shinya Hirota ,  Yoshinori Yamashita

    发明人： Shinya Hirota ,  Yoshinori Yamashita

    IPC分类号： F01N3/10

    CPC分类号： F01N3/208 ,  F01N3/2006 ,  F01N2560/026 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1621 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/26

    摘要： In an exhaust gas purification system for an internal combustion engine, a NOx selective reduction catalyst for reducing NOx with ammonia that is adsorbed on the NOx selective reduction catalyst is disposed in an exhaust passage of the engine. In the NOx selective reduction catalyst, ammonia in a first adsorption state that is adsorbed at a low temperature and ammonia in a second adsorption state that is adsorbed at a high temperature are present. Because ammonia, which has been in the first adsorption state and which is desorbed from the NOx selective reduction catalyst, tends to be discharged to the atmosphere, a control section that estimates an adsorption amount of ammonia in the first adsorption state is provided in the exhaust gas purification system for the internal combustion engine in order to control the adsorption amount of ammonia in the first adsorption state within a specified level.

    摘要翻译： 在内燃机的废气净化系统中，在发动机的排气通路内配置有用于将NOx吸附在NOx选择还原催化剂上的用于还原NOx的NOx选择还原催化剂。 在NOx选择还原催化剂中，存在吸附在低温下的第一吸附状态的氨和处于高温吸附的第二吸附状态的氨。 由于已经处于第一吸附状态并且从NOx选择还原催化剂解吸的氨倾向于排放到大气中，所以在排气中设置了估计第一吸附状态的氨的吸附量的控制部 用于内燃机的气体净化系统，以控制在第一吸附状态下的氨的吸附量在规定的水平内。