Pure steam-related apparatus protected from fouling and method of
manufacturing the same
    21.
    发明授权
    Pure steam-related apparatus protected from fouling and method of manufacturing the same 失效
    纯蒸汽相关装置防止污染及其制造方法

    公开(公告)号:US6150040A

    公开(公告)日:2000-11-21

    申请号:US78497

    申请日:1998-05-14

    Abstract: A pure steam-related apparatus, which is one of apparatus in the group of pure steam generators generating pure steam from purified water, pipelines for pure steam and sterilizers using pure steam, is protected from discoloration, so-called "fouling", to red or black caused by contact with the pure steam. The apparatus is manufactured by using an austenitic stainless steel sheet as the material, by taking the blanks from the material which received no mechanical surface polishing, by deforming and welding, without electrolytic polishing customarily done, and by passivating the surface to contact pure water to increase Cr-content in the passivation film to such extent as 45 atomic % or higher, preferably 55 atomic % or higher. Better results will be obtained by ensuring Cr/Fe ratio in the passivation film at the level of 1.45 or higher, preferably, 1.70 or higher.

    Abstract translation: 纯蒸汽相关设备是纯净蒸汽发生器的一种设备,其中纯蒸汽发生器产生纯蒸汽,纯蒸汽管道和纯蒸汽灭菌器,可防止变色,即所谓的“污染” 或与纯蒸汽接触引起的黑色。 该装置是通过使用奥氏体不锈钢板作为材料,通过使不经机械表面抛光的材料的坯料通过变形和焊接而不经常进行电解抛光,并且通过钝化表面以接触纯水而制造 将钝化膜中的Cr含量提高到45原子%以上,优选为55原子%以上的程度。 通过确保钝化膜中的Cr / Fe比为1.45以上,优选为1.70以上,可获得更好的结果。

    Exhaust gas purification apparatus for internal combustion engine
    25.
    发明授权
    Exhaust gas purification apparatus for internal combustion engine 有权
    内燃机废气净化装置

    公开(公告)号:US09157354B2

    公开(公告)日:2015-10-13

    申请号:US13639559

    申请日:2010-04-08

    Abstract: An exhaust gas purification apparatus for an internal combustion engine comprises a NOx selective reduction catalyst provided in an exhaust passage of an internal combustion engine; an upstream side oxidation catalyst which is a catalyst having an oxidizing ability provided in the exhaust passage upstream from the NOx selective reduction catalyst and which includes a carrier for carrying a noble metal for oxidation, the carrier being formed of a basic carrier; and a reducing agent supply until which supplies a reducing agent to an exhaust gas allowed to flow into the NOx selective reduction catalyst. Accordingly, even when the oxidation catalyst causes the SOx poisoning in the exhaust gas purification apparatus for the internal combustion engine having the oxidation catalyst and the NOx selective reduction catalyst provided in the exhaust passage, the reduction efficiency of NOx reduced by the aid of the NOx selective reduction catalyst is favorably maintained.

    Abstract translation: 一种用于内燃机的废气净化设备包括设置在内燃机的排气通道中的NOx选择还原催化剂; 上游侧氧化催化剂,其是具有氧化能力的催化剂,其设置在NOx选择还原催化剂上游的排气通道中,并且包括用于承载用于氧化的贵金属的载体,载体由碱性载体形成; 以及还原剂供应,直到向排气中的还原剂供应流入NOx选择还原催化剂。 因此,即使氧化催化剂在具有氧化催化剂的内燃机的排气净化装置和设置在排气通路中的NOx选择还原催化剂的SO x中毒的情况下,也可以借助于NOx减少NOx的还原效率 有选择地还原催化剂。

    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    26.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号:US20150224446A1

    公开(公告)日:2015-08-13

    申请号:US14130414

    申请日:2012-09-10

    Abstract: An internal combustion engine wherein an exhaust purification catalyst and hydrocarbon feed valve are arranged in an engine exhaust passage and wherein the NOX which is contained in the exhaust gas is removed by injection of hydrocarbons from the hydrocarbon feed valve by a predetermined period. Hydrocarbons are injected from the hydrocarbon feed valve toward the upstream side of the engine exhaust passage. When hydrocarbons are injected from the hydrocarbon feed valve by a predetermined period, the injection pressure of the hydrocarbons is made to gradually fall from injection start to injection end in the injection time period of each injection.

    Abstract translation: 一种内燃机,其中排气净化催化剂和烃供给阀布置在发动机排气通道中,并且其中通过从烃进料阀注入烃预定时间段来排除废气中所含的NO x。 碳氢化合物从烃进料阀向发动机排气通道的上游侧注入。 当从烃进料阀注入烃类预定时间时,在每次注射的喷射时间段内使烃的喷射压力从喷射开始到喷射结束逐渐下降。

    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    28.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 审中-公开
    内燃机排气净化系统

    公开(公告)号:US20140127101A1

    公开(公告)日:2014-05-08

    申请号:US14152629

    申请日:2014-01-10

    Abstract: A method for purifying exhaust gas of an internal combustion engine including flowing an exhaust gas containing NOx and a concentration of hydrocarbons in an exhaust gas passage that contains an exhaust purification catalyst, wherein the concentration of hydrocarbons is vibrated within a predetermined range of amplitude and period, and a least a portion of the hydrocarbons are reformed by the exhaust purification catalyst; reacting the NOx contained in the exhaust gas and the reformed hydrocarbons to produce a reducing intermediate; and chemically reducing, wherein at the time of engine operation, a demanded produced amount of the reducing intermediate required for chemically reducing the NOx is calculated, and the amplitude and vibration period of the concentration of hydrocarbons flowing into the exhaust purification catalyst are controlled so that an amount of the reducing intermediate produced becomes the demanded produced amount.

    Abstract translation: 一种内燃机的排气净化方法,其特征在于,在含有排气净化催化剂的排气通路中含有含有NOx的废气和烃浓度的废气,其中所述烃的浓度在振幅和周期的预定范围内振动 ,并且通过排气净化催化剂将至少一部分烃重整; 使排气中所含的NOx与重整烃反应,生成还原中间体; 和化学还原,其中在发动机运转时,计算要求的化学还原NOx所需的还原中间体的产生量,并且控制流入排气净化催化剂的烃浓度的振幅和振动周期,使得 所产生的还原中间体的量成为所需量。

    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    30.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号:US20130259752A1

    公开(公告)日:2013-10-03

    申请号:US13263660

    申请日:2010-12-24

    Abstract: In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. The exhaust purification catalyst (13) is comprised of an upstream-side catalyst (14a) and a downstream-side catalyst (14b) arranged in series at an interval from each other. The upstream-side catalyst (14b) has a smaller cross-sectional area than the downstream-side catalyst (14b). The concentration of hydrocarbons which flow into the upstream-side catalyst (14a) is made to vibrate by within a predetermined range of amplitude of a 200 ppm or more and within a predetermined range of period of 5 seconds or less, whereby the NOx which is contained in exhaust gas is reduced at the exhaust purification catalyst (13).

    Abstract translation: 在内燃机中,配置有发动机排气通路内部的烃供给阀(15)和排气净化催化剂(13)。 排气净化催化剂(13)由彼此间隔排列的上游侧催化剂(14a)和下游侧催化剂(14b)构成。 上游侧催化剂(14b)的下游侧催化剂(14b)的截面积较小。 流入上游侧催化剂(14a)的烃的浓度在200ppm以上的预定振幅范围内振动,并且在5秒以下的规定范围内,由此, 在排气净化催化剂(13)中减少废气中所含的废气。

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