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38 条记录 (耗时 0.015 秒)

    Exhaust gas purification apparatus of engine
    32.
    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：US07571599B2

    公开(公告)日：2009-08-11

    申请号：US10566367

    申请日：2004-07-23

    申请人： Kiminobu Hirata

    发明人： Kiminobu Hirata

    IPC分类号： F01N3/00

    CPC分类号： F01N3/2066 ,  B01D53/90 ,  B01D53/9495 ,  F01N2610/02 ,  F01N2610/08 ,  F01N2610/1493 ,  F01N2900/08 ,  Y02T10/24

    摘要： A liquid reducing agent of a necessary amount according to an engine operating condition is injection-supplied from a nozzle having an injection hole opening to inside an exhaust gas passage, positioned on an exhaust gas upstream side of a nitrogen oxide reduction catalyst. On the other hand, when an injection flow rate of the liquid reducing agent becomes zero, compressed air stored in a purge air tank is supplied into the nozzle for a predetermined time. Thus, the liquid reducing agent remaining in the nozzle is forcibly discharged by the compressed air, and hence even if the nozzle is at a high temperature due to the exhaust heat, a situation where reducing agent constituents are deposited does not occur, and clogging of the inside of the nozzle can be prevented.

    摘要翻译： 根据发动机工作条件所需量的液体还原剂从位于氮氧化物还原催化剂的废气上游侧的排气通道内部的喷射孔的喷嘴喷射供给。 另一方面，当液体还原剂的喷射流量变为零时，储存在净化空气罐中的压缩空气在喷嘴中供给预定时间。 因此，残留在喷嘴中的液体还原剂被压缩空气强制排出，因此即使喷嘴由于排气而处于高温下，也不会发生沉积还原剂成分的情况，堵塞 可以防止喷嘴的内部。

    Exhaust gas purification apparatus of engine
    33.
    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：US20070186542A1

    公开(公告)日：2007-08-16

    申请号：US10566367

    申请日：2004-07-23

    申请人： Kiminobu Hirata

    发明人： Kiminobu Hirata

    IPC分类号： F01N3/00 ,  F01N3/10

    CPC分类号： F01N3/2066 ,  B01D53/90 ,  B01D53/9495 ,  F01N2610/02 ,  F01N2610/08 ,  F01N2610/1493 ,  F01N2900/08 ,  Y02T10/24

    摘要： A liquid reducing agent of a necessary amount according to an engine operating condition is injection-supplied from a nozzle having an injection hole opening to inside an exhaust gas passage, positioned on an exhaust gas upstream side of a nitrogen oxide reduction catalyst. On the other hand, when an injection flow rate of the liquid reducing agent becomes zero, compressed air stored in a purge air tank is supplied into the nozzle for a predetermined time. Thus, the liquid reducing agent remaining in the nozzle is forcibly discharged by the compressed air, and hence even if the nozzle is at a high temperature due to the exhaust heat, a situation where reducing agent constituents are deposited does not occur, and clogging of the inside of the nozzle can be prevented.

    摘要翻译： 根据发动机工作条件所需量的液体还原剂从位于氮氧化物还原催化剂的废气上游侧的排气通道内部的喷射孔的喷嘴喷射供给。 另一方面，当液体还原剂的喷射流量变为零时，储存在净化空气罐中的压缩空气在喷嘴中供给预定时间。 因此，残留在喷嘴中的液体还原剂被压缩空气强制排出，因此即使喷嘴由于排气而处于高温下，也不会发生沉积还原剂成分的情况，堵塞 可以防止喷嘴的内部。

    Exhaust gas purification apparatus for engine
    34.
    发明申请
    Exhaust gas purification apparatus for engine 审中-公开
    发动机废气净化装置

    公开(公告)号：US20060248880A1

    公开(公告)日：2006-11-09

    申请号：US11392683

    申请日：2006-03-30

    申请人： Kiminobu Hirata ,  Hisashi Akagawa ,  Shuichi Nakamura ,  Hiroki Ueno ,  Ikuo Sakai

    发明人： Kiminobu Hirata ,  Hisashi Akagawa ,  Shuichi Nakamura ,  Hiroki Ueno ,  Ikuo Sakai

    IPC分类号： F01N3/00 ,  F01N3/10

    CPC分类号： F01N3/2066 ,  F01N2510/00 ,  F01N2510/14 ,  F01N2610/02 ,  F01N2610/11 ,  F01N2610/1453 ,  Y02T10/24

    摘要： An exhaust gas purification apparatus of an engine having a reduction catalytic converter arranged in an engine exhaust gas system, for reducing and purifying nitrogen oxide by a liquid reducing agent, a reducing agent supply device controlling a flow rate of a liquid reducing agent that is supplied to the reduction catalytic converter, depending on engine operating conditions, an injection nozzle secured to the exhaust system via a flange, for injection-supplying the liquid reducing agent into exhaust gas at a position upstream of the reduction catalytic converter, and piping providing a fluid communication between the reducing agent supply device and the injection nozzle. The piping is constructed of a material made of ceramics, or water repellency treatment is applied to the inner wall of at least one of the injection nozzle and the piping.

    摘要翻译： 一种发动机的废气净化装置，具有在发动机排气系统中配置的用于通过液体还原剂还原和净化氮氧化物的还原催化转化器的排气净化装置，控制供给的液体还原剂的流量的还原剂供给装置 至所述还原催化转化器，根据发动机工作条件，经由法兰固定到所述排气系统的注射喷嘴，用于将所述液体还原剂向所述还原催化转化器的上游位置处的废气中注入供给，以及提供流体的管道 还原剂供给装置与喷嘴之间的连通。 管道由陶瓷制成的材料构成，或者对喷嘴和管道中的至少一个的内壁施加防水处理。

    Engine exhaust emission purification apparatus
    35.
    发明授权
    Engine exhaust emission purification apparatus 有权
    发动机废气净化装置

    公开(公告)号：US07614213B2

    公开(公告)日：2009-11-10

    申请号：US10572573

    申请日：2004-09-17

    申请人： Kiminobu Hirata ,  Hisashi Akagawa ,  Shuichi Nakamura ,  Hiroki Ueno ,  Ikuo Sakai

    发明人： Kiminobu Hirata ,  Hisashi Akagawa ,  Shuichi Nakamura ,  Hiroki Ueno ,  Ikuo Sakai

    IPC分类号： F01N3/00

    CPC分类号： F01N3/208 ,  F01N2240/02 ,  F01N2240/16 ,  F01N2260/024 ,  F01N2610/02 ,  F01N2610/10 ,  F01N2610/11 ,  F01N2610/1453 ,  F01N2610/1486 ,  F01N2900/1811 ,  F01P2060/16 ,  F01P2060/18 ,  Y02T10/24

    摘要： An engine exhaust emission purification apparatus for reducing and purifying NOx in the exhaust emission by using a liquid reducing agent having a temperature maintenance device for maintaining a temperature of at least a part of a liquid reducing agent supply system configured by an injection nozzle and piping of the injection nozzle at a temperature lower than a boiling point of a solvent of the liquid reducing agent or equal to or higher than a melting point of dissolved matter in which the liquid reducing agent existing in the liquid reducing agent supply system conducts heat exchange with the liquid reducing agent supply system thereby being maintained at a temperature lower than the boiling point of the solvent or equal to or higher than the melting point of the dissolved matter and resultantly, occurrence of precipitation of the dissolved matter due to evaporation of only the solvent in the liquid reducing agent supply system does not occur, and even If precipitation of the dissolved matter occurs, the dissolved matter per se is melt away to prevent an injection hole of the injection nozzle from being clogged.

    摘要翻译： 一种用于通过使用具有温度维持装置的液体还原剂来还原和净化排气中的NOx的发动机废气排放净化装置，其用于维持由喷嘴和管道构成的至少一部分液体还原剂供给系统的温度 所述注射喷嘴在低于所述液体还原剂的溶剂的沸点的温度下或者等于或高于存在于所述液体还原剂供应系统中的液体还原剂与所述液体还原剂供应系统进行热交换的溶解物质的熔点 液体还原剂供应系统由此保持在低于溶剂沸点的温度或等于或高于溶解物的熔点，并且因此仅由溶剂蒸发引起的溶解物质沉淀 液体还原剂的供给系统不会发生，甚至如果沉淀出来 发生腐蚀物质，溶解物本身被熔化，以防止喷嘴的注入孔被堵塞。

    Exhaust gas purifying apparatus
    37.
    发明申请
    Exhaust gas purifying apparatus 审中-公开
    废气净化装置

    公开(公告)号：US20070110642A1

    公开(公告)日：2007-05-17

    申请号：US11650514

    申请日：2007-01-08

    申请人： Kiminobu Hirata

    发明人： Kiminobu Hirata

    IPC分类号： B01D53/34

    CPC分类号： F01N3/2066 ,  F01N5/02 ,  F01N2610/02 ,  F01N2610/10 ,  F01N2610/102 ,  Y02T10/16 ,  Y02T10/24

    摘要： An exhaust pipe for an exhaust gas is provided, at its position on upstream side of nitrogen oxides (NOx) catalytic converter, with an internal tubular member disposed to have open opposite ends in a direction along exhaust gas flow while leaving a clearance between internal tubular member and exhaust pipe inner wall. A urea aqueous solution from the storage tank is additively injected by an injection nozzle in a direction of exhaust gas flow within internal tubular member capable of being heated by exhaust gas in exhaust pipe, to thereby shortly bring temperature of internal tubular member to become substantially equal to an exhaust gas temperature. Thus, temperature of urea aqueous solution additively injected into internal tubular member does not decrease when the solution adheres to an inner wall of that tubular member forming liquid droplets, thereby enhancing hydrolysis an inner wall of urea aqueous solution.

    摘要翻译： 在氮氧化物（NOx）催化转化器的上游侧设有用于排气的排气管，其内部管状部件设置成沿排气流动方向具有开放的相对端，同时留下内管 构件和排气管内壁。 来自储罐的尿素水溶液通过注射喷嘴在内部管状构件中的排气方向上被附加地注入，其能够被排气管中的废气加热，从而短时间使内部管状构件的温度变得基本相等 达到废气温度。 因此，当溶液粘附到形成液滴的管状构件的内壁，从而增加尿素水溶液的内壁的水解时，加入注入内部管状构件的尿素水溶液的温度不降低。

    Exhaust emission purifying apparatus and exhaust emission purifying method for engine
    38.
    发明申请
    Exhaust emission purifying apparatus and exhaust emission purifying method for engine 审中-公开
    发动机用排气净化装置及排气净化方法

    公开(公告)号：US20060233689A1

    公开(公告)日：2006-10-19

    申请号：US11392535

    申请日：2006-03-30

    申请人： Kiminobu Hirata ,  Hirokazu Satou

    发明人： Kiminobu Hirata ,  Hirokazu Satou

    IPC分类号： B01D53/56

    CPC分类号： F01N3/2066 ,  B01F3/04049 ,  B01F5/0451 ,  B01F5/0463 ,  B01F5/0688 ,  F01N3/36 ,  F01N2240/20 ,  F01N2240/40 ,  F01N2510/14 ,  F01N2610/02 ,  F01N2610/1453 ,  Y02T10/24

    摘要： In an exhaust emission purifying apparatus for an engine provided with: a NOx reduction catalytic converter disposed in an engine exhaust pipe, for reductively purifying NOx with ammonia produced by the urea aqueous solution; and an injection nozzle injection-supplying the urea aqueous solution into the exhaust gas at an upstream position of the NOx reduction catalytic converter, a hydrolytic catalyst that accelerates the hydrolysis reaction by which ammonia is produced by the urea aqueous solution, is applied to at least one of an inner passage of the injection nozzle, the exhaust pipe positioned between the injection nozzle and the NOx reduction catalytic converter, and a diffuser panel diffusing the exhaust gas between the injection nozzle and the reduction catalytic converter, and then, the hydrolysis reaction of the urea aqueous solution being in contact with the hydrolytic catalyst is accelerated, to thereby suppress the deposition of urea in the exhaust pipe.

    摘要翻译： 在一种用于发动机的排气净化装置中，该排气净化装置具有：设置在发动机排气管内的NO x x还原型催化转化器，用由尿素生成的氨还原性地净化NO x 水溶液; 以及在NO X还原催化转化器的上游位置将尿素水溶液注入供给到废气中的喷射喷嘴，加速由尿素生成氨的水解反应的水解催化剂 水溶液施加到喷嘴的内部通道中的至少一个，位于注射喷嘴和NO x X还原催化转化器之间的排气管，以及将排气扩散到 注射喷嘴和还原催化转化器，然后加速与水解催化剂接触的尿素水溶液的水解反应，从而抑制尿素在排气管中的沉积。