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149 条记录 (耗时 0.033 秒)

    Method and a device for purifying combustion exhaust gas
    8.
    发明授权
    Method and a device for purifying combustion exhaust gas 失效
    燃烧废气净化方法和装置

    公开(公告)号：US5778667A

    公开(公告)日：1998-07-14

    申请号：US876608

    申请日：1997-06-16

    申请人： Yukio Kinugasa ,  Takaaki Itou ,  Naoto Suzuki

    发明人： Yukio Kinugasa ,  Takaaki Itou ,  Naoto Suzuki

    IPC分类号： B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N3/24 ,  F01N9/00 ,  F01N13/02 ,  F01N13/04 ,  F02D41/14 ,  F01N3/36

    CPC分类号： F01N3/2073 ,  B01D53/9481 ,  B01D53/9495 ,  F01N13/009 ,  F01N13/011 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/2053 ,  F01N9/00 ,  B01D2251/2062 ,  B01D53/9418 ,  B01D53/945 ,  F01N2240/25 ,  F01N2250/12 ,  F01N2610/02 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

    摘要： In the present invention, the No. 1 cylinder of an engine is connected to a first exhaust passage and the No. 2 to No. 4 cylinders are connected to a second exhaust passage. A three-way catalyst and a NO.sub.X absorbent are disposed in the first and second exhaust passage, respectively. A denitrating catalyst is disposed in a common exhaust passage to which the first and second exhaust passage merge. The NO.sub.X absorbent absorbs NO.sub.X when the No. 2 to No. 4 cylinders are operated at a lean air-fuel ratio, and is regenerated, i.e., releases and reduces the absorbed NO.sub.X when the No. 2 to No. 4 cylinders are operated at a rich air-fuel ratio. However, NO.sub.X, without being reduced, is released from the NO.sub.X absorbent during a short period at the beginning of the regenerating operation. In the present invention, the No. 1 cylinder is operated at a rich air-fuel ratio during the short period at the beginning of the regenerating operation in order to produce NH.sub.3 at the three-way catalyst. Therefore, when NO.sub.X without being reduced is released from the NO.sub.X absorbent and flows into the denitrating catalyst on the common exhaust passage, NH.sub.3 produced at the three-way catalyst is also supplied to the denitrating catalyst. Thus, NO.sub.X released from the NO.sub.X absorbent at the beginning of the regenerating operation is reduced at the denitrating catalyst by NH.sub.3 produced at the three-way catalyst.

    摘要翻译： 在本发明中，发动机的1号缸与第一排气通路连接，第2〜4缸与第2排气通路连接。 分别在第一和第二排气通道中设置三元催化剂和NOX吸收剂。 脱气催化剂设置在第一和第二排气通道合流的公共排气通道中。 当2号至4号气缸以稀薄的空燃比运行时，NOX吸收剂吸收NOX，并且再生时，即当第2号至第4号气缸运行时释放并减少吸收的NOX 丰富的空燃比。 然而，在再生操作开始时的短时间内，NOX不被还原，从NOX吸收剂中释放出来。 在本发明中，为了在三元催化剂下生成NH 3，在再生运转开始的短时间内，1号气缸以浓空燃比运转。 因此，当没有还原的NO x从NOX吸收剂中释放并流入共用排气通道的脱硝催化剂时，在三元催化剂上生成的NH 3也被供给到脱硝催化剂。 因此，在再生操作开始时从NOX吸收剂释放的NOX在脱氮催化剂下通过在三元催化剂下产生的NH 3而降低。

    Exhaust gas purification device for an internal combustion engine
    9.
    发明授权
    Exhaust gas purification device for an internal combustion engine 有权
    内燃机用废气净化装置

    公开(公告)号：US06289672B1

    公开(公告)日：2001-09-18

    申请号：US09346710

    申请日：1999-07-02

    申请人： Kenji Katoh ,  Takaaki Itou ,  Toshio Tanahashi ,  Hiroshi Tanaka ,  Naoto Suzuki ,  Yukio Kinugasa

    发明人： Kenji Katoh ,  Takaaki Itou ,  Toshio Tanahashi ,  Hiroshi Tanaka ,  Naoto Suzuki ,  Yukio Kinugasa

    IPC分类号： F01N300

    CPC分类号： F02D41/1462 ,  F01N3/0814 ,  F01N3/0842 ,  F01N13/009 ,  F01N13/011 ,  F01N13/107 ,  F01N2430/06 ,  F02D41/027 ,  F02D41/0275 ,  F02D41/1443 ,  F02D41/1456 ,  F02D41/1465 ,  F02D41/1498 ,  F02D41/3029 ,  F02D41/307 ,  F02D41/405 ,  F02D2011/102 ,  F02D2200/0806 ,  F02D2200/1015 ,  F02D2200/602 ,  Y02T10/44

    摘要： An NOx occluding and reducing catalyst is disposed in an exhaust gas passage of an internal combustion engine that operates at a lean air-fuel ratio. When the engine is operating at a lean air-fuel ratio, the NOx occluding and reducing catalyst absorbs NOx in the exhaust gas. To release NOx, the engine is operated at a rich air-fuel ratio so that the exhaust gas flowing into the NOx occluding and reducing catalyst acquires a rich air-fuel ratio. While the engine is operated in a region of moderate lean air-fuel ratios of from the stoichiometric air-fuel ratio to an air-fuel ratio of about 20 at the time when the engine operating air-fuel ratio is changing from a lean air-fuel ratio operation to a rich air-fuel ratio operation, an electronic control unit (ECU) of the engine injects secondary fuel, that does not contribute to combustion, into the cylinders of the engine through the direct cylinder fuel injection valves in the expansion stroke or the exhaust stroke of the cylinders, so that the exhaust gas flowing into the NOx occluding and reducing catalyst acquires a rich air-fuel ratio. This prevents unpurified NOx from flowing out of the NOx occluding and reducing catalyst at the time when the engine operating air-fuel ratio is changed.

    摘要翻译： NOx吸收还原催化剂设置在以稀空燃比运转的内燃机的排气通路中。 当发动机以稀薄的空燃比运转时，NOx吸留还原催化剂吸收废气中的NOx。 为了释放NOx，发动机以丰富的空燃比运转，使得流入NOx吸留还原催化剂的废气获得浓空燃比。 虽然发动机在发动机工作空燃比从稀薄空气燃料比变化时在从理论空燃比相对于大约20的空燃比的中等稀薄空燃比的区域中运行， 燃料比操作到丰富的空燃比操作，发动机的电子控制单元（ECU）通过膨胀冲程中的直接气缸燃料喷射阀向发动机的气缸中喷射不助于燃烧的二次燃料 或气缸的排气冲程，使得流入NOx吸留还原催化剂的废气获得浓空燃比。 这防止了在发动机运转空燃比变化时未净化的NOx从NOx吸留还原催化剂流出。

    Separation device, fixing device, and image forming apparatus
    10.
    发明授权
    Separation device, fixing device, and image forming apparatus 有权

    公开(公告)号：US10042294B2

    公开(公告)日：2018-08-07

    申请号：US15410260

    申请日：2017-01-19

    申请人： Seiji Saitoh ,  Yohhei Watanabe ,  Fumihiro Hirose ,  Naoto Suzuki ,  Takashi Sakamaki

    发明人： Seiji Saitoh ,  Yohhei Watanabe ,  Fumihiro Hirose ,  Naoto Suzuki ,  Takashi Sakamaki

    IPC分类号： G03G15/20

    摘要： A separation device includes a separator that separates a recording medium from a rotator and a plurality of recesses disposed on a conveyance path side face of the separator over which the recording medium is conveyed in a recess span in a recording medium conveyance direction and at least in a conveyance span where the recording medium is conveyed. The plurality of recesses includes a first recess extending in a first extension line that is oblique relative to the recording medium conveyance direction and a second recess being adjacent to the first recess in a direction perpendicular to the recording medium conveyance direction. The second recess extends in a second extension line that is oblique relative to the recording medium conveyance direction and overlaps the first extension line of the first recess in the direction perpendicular to the recording medium conveyance direction to define an overlap span.