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    Exhaust gas purification device for an internal combustion engine
    51.
    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：US06336320B1

    公开(公告)日：2002-01-08

    申请号：US09345406

    申请日：1999-07-01

    申请人： Hiroshi Tanaka ,  Toshio Tanahashi ,  Naoto Suzuki

    发明人： Hiroshi Tanaka ,  Toshio Tanahashi ,  Naoto Suzuki

    IPC分类号： F01N300

    CPC分类号： F01N3/0842 ,  F01N3/0814 ,  F01N9/00 ,  F01N13/009 ,  F01N13/011 ,  F01N2250/12 ,  F01N2570/16 ,  F02D41/0275 ,  F02D41/1462 ,  F02D41/1465 ,  F02D41/3011 ,  F02D41/3029 ,  F02D41/402 ,  F02D41/405 ,  F02D2200/0806 ,  F02D2200/0814 ,  F02D2200/0818 ,  Y02T10/44 ,  Y02T10/47

    摘要： Start catalysts (SCs) having an O2 storage function are disposed in an exhaust gas passage of an internal combustion engine, and an NOx occluding and reducing catalyst is disposed in the exhaust gas passages downstream of the SCs. NOx in the exhaust gas is absorbed by the NOx occluding and reducing catalyst when the engine is in operation at a lean air-fuel ratio. When NOx is to be released, the engine is operated at a rich air-fuel ratio so that exhaust gas having a rich air-fuel ratio flows into the SCs and into the NOx occluding and reducing catalyst. An electronic control unit (ECU) executes the secondary fuel injection that does not contribute to the combustion in the expansion stroke or in the exhaust stroke of each cylinder by using a direct cylinder fuel injection valve at the time when the engine operating air-fuel ratio is to be changed from a lean air-fuel ratio operation to a rich air-fuel ratio, so that exhaust gas having a rich air-fuel ratio flows into the SC and that oxygen stored in the SC is released. At the time of changing over the air-fuel ratio, therefore, the air-fuel ratio is changed from the lean side to the rich side without delay, eliminating such an occurrence that NOx is released from the NOx occluding and reducing catalyst without being purified at the time of changing the air-fuel ratio.

    摘要翻译： 具有O 2储存功能的起始催化剂（SC）被设置在内燃机的排气通道中，并且NOx吸留还原催化剂设置在SC的下游的排气通道中。 当发动机以稀薄的空燃比运转时，废气中的NOx被NOx吸留和还原催化剂吸收。 当要释放NOx时，发动机以丰富的空燃比运转，使得具有浓空燃比的废气流入SC并进入NOx吸留和还原催化剂。 电子控制单元（ECU）通过在发动机工作空燃比（ECU）中使用直接气缸燃料喷射阀来执行对膨胀行程或每个气缸的排气冲程中的燃烧无贡献的二次燃料喷射 从稀空燃比操作变为浓空燃比，使得具有浓空燃比的废气流入SC，并且释放存储在SC中的氧。 因此，在空燃比变化的时候，空燃比从稀侧变为富侧无效，消除了NOx从NO X吸留还原催化剂释放而不被净化的情况 在改变空燃比的时候。

    Exhaust gas purification device for an internal combustion engine
    52.
    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。

    Gate array with high driving ability cells
    56.
    发明授权
    Gate array with high driving ability cells 失效
    门阵列具有高驾驶能力

    公开(公告)号：US4904886A

    公开(公告)日：1990-02-27

    申请号：US226320

    申请日：1988-07-20

    申请人： Toshio Tanahashi

    发明人： Toshio Tanahashi

    IPC分类号： H01L21/822 ,  H01L21/82 ,  H01L27/04 ,  H01L27/118 ,  H03K19/173 ,  H03K19/177

    CPC分类号： H03K19/1735 ,  H01L27/118 ,  Y10S257/923

    摘要： A gate array for implementing a digital integrated circuit includes first cells and second cells of different kinds which are selectively usable depending upon the application of the gate array, i.e. the first cells for applications which need only a low driving ability and the second cells for applications which need a high driving ability.

    摘要翻译： 用于实现数字集成电路的门阵列包括根据门阵列的应用可选择地使用的第一单元和不同种类的第二单元，即仅需要低驱动能力的应用的第一单元，以及用于应用的第二单元 这需要较高的驾驶能力。