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    Exhaust gas purification system for internal combustion engine
    2.
    发明授权
    Exhaust gas purification system for internal combustion engine 有权
    内燃机排气净化系统

    公开(公告)号：US08418446B2

    公开(公告)日：2013-04-16

    申请号：US12740250

    申请日：2008-11-11

    申请人： Koichiro Nakatani ,  Terutoshi Tomoda ,  Shinobu Ishiyama ,  Tomoyuki Ono ,  Tomoyuki Kogo ,  Katsuhiro Ito

    发明人： Koichiro Nakatani ,  Terutoshi Tomoda ,  Shinobu Ishiyama ,  Tomoyuki Ono ,  Tomoyuki Kogo ,  Katsuhiro Ito

    IPC分类号： F01N3/24 ,  F01N3/08 ,  F01N3/20 ,  B01D53/94 ,  F02D41/04

    CPC分类号： F02D41/0055 ,  B01D2255/91 ,  B01D2258/012 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/106 ,  F01N13/009 ,  F02D41/0052 ,  F02D41/0275 ,  F02D2200/0802 ,  F02D2250/38 ,  Y02T10/47

    摘要： Disclosed is a technology that enables better reduction of NOx stored in an NOx catalyst in an exhaust gas purification system for an internal combustion engine. When NOx stored in an NOx catalyst is to be reduced, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to a target air-fuel ratio by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine. In doing so, if the temperature of the NOx catalyst is not lower than a specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to the target air-fuel ratio while bringing the combustion state into low temperature combustion. On the other hand, if the temperature of the NOx catalyst is lower than the specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to the target air-fuel ratio while decreasing the quantity of EGR gas in a cylinder so that the amount of generated smoke is kept within an allowable range.

    摘要翻译： 公开了一种能够更好地还原内燃机的排气净化系统中的NOx催化剂中存储的NOx的技术。 当减少NOx吸收剂中存储的NOx时，通过降低从内燃部排出的废气的空燃比，将NOx催化剂周围的环境气体的空燃比降低到目标空燃比 发动机。 在这样做时，如果NOx催化剂的温度不低于特定温度，则NOx催化剂周围环境气氛的空燃比降低到目标空燃比，同时使燃烧状态进入低温燃烧 。 另一方面，如果NOx催化剂的温度低于特定温度，则NOx催化剂周围环境气氛的空燃比降低到目标空燃比，同时减少EGR气体的量 使得产生的烟雾量保持在容许范围内。

    EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE
    4.
    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：US20100229536A1

    公开(公告)日：2010-09-16

    申请号：US12740250

    申请日：2008-11-11

    申请人： Koichiro Nakatani ,  Terutoshi Tomoda ,  Shinobu Ishiyama ,  Tomoyuki Ono ,  Tomoyuki Kogo ,  Katsuhiro Ito

    发明人： Koichiro Nakatani ,  Terutoshi Tomoda ,  Shinobu Ishiyama ,  Tomoyuki Ono ,  Tomoyuki Kogo ,  Katsuhiro Ito

    IPC分类号： F02M25/06 ,  F01N3/10

    CPC分类号： F02D41/0055 ,  B01D2255/91 ,  B01D2258/012 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/106 ,  F01N13/009 ,  F02D41/0052 ,  F02D41/0275 ,  F02D2200/0802 ,  F02D2250/38 ,  Y02T10/47

    摘要： Disclosed is a technology that enables better reduction of NOx stored in an NOx catalyst in an exhaust gas purification system for an internal combustion engine. When NOx stored in an NOx catalyst is to be reduced, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to a target air-fuel ratio by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine. In doing so, if the temperature of the NOx catalyst is not lower than a specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to the target air-fuel ratio while bringing the combustion state into low temperature combustion. On the other hand, if the temperature of the NOx catalyst is lower than the specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased to the target air-fuel ratio while decreasing the quantity of EGR gas in a cylinder so that the amount of generated smoke is kept within an allowable range.

    摘要翻译： 公开了一种能够更好地还原内燃机的排气净化系统中的NOx催化剂中存储的NOx的技术。 当减少NOx吸收剂中存储的NOx时，通过降低从内燃部排出的废气的空燃比，将NOx催化剂周围的环境气体的空燃比降低到目标空燃比 发动机。 在这样做时，如果NOx催化剂的温度不低于特定温度，则NOx催化剂周围环境气氛的空燃比降低到目标空燃比，同时使燃烧状态进入低温燃烧 。 另一方面，如果NOx催化剂的温度低于特定温度，则NOx催化剂周围环境气氛的空燃比降低到目标空燃比，同时减少EGR气体的量 使得产生的烟雾量保持在容许范围内。

    CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
    8.
    发明申请
    CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机控制装置

    公开(公告)号：US20100263638A1

    公开(公告)日：2010-10-21

    申请号：US12678876

    申请日：2008-10-31

    申请人： Tomoyuki Kogo ,  Terutoshi Tomoda ,  Shinobu Ishiyama ,  Tomoyuki Ono ,  Koichiro Nakatani ,  Katsuhiro Ito ,  Masayoshi Nakagawa ,  Yoshihiro Hisataka

    发明人： Tomoyuki Kogo ,  Terutoshi Tomoda ,  Shinobu Ishiyama ,  Tomoyuki Ono ,  Koichiro Nakatani ,  Katsuhiro Ito ,  Masayoshi Nakagawa ,  Yoshihiro Hisataka

    IPC分类号： F02B33/00

    CPC分类号： F02B37/24 ,  F02B37/004 ,  F02B37/007 ,  F02B37/18 ,  F02D13/02 ,  F02D23/02 ,  F02D41/0007 ,  F02D2041/001 ,  F02D2200/0408 ,  Y02T10/144 ,  Y02T10/18

    摘要： An internal combustion engine control apparatus that prevents an abrupt change in the air amount at the time of supercharger switching. The control apparatus enters a small turbo operating state in which a small turbocharger is mainly operative, during relatively low-rotation-speed and low-load side, and enters a large turbo operating state in which a large turbocharger is mainly operative, in a relatively high-rotation-speed and high-load. In the small turbo operating state, the control apparatus can exercise charging efficiency enhancement control by using a scavenging effect. Before switching from the small turbo operating state to the large turbo operating state, the control apparatus predicts whether the large turbocharger will build up its boost pressure quickly or slowly. When slow boost pressure is predicted, the control apparatus exercises charging efficiency enhancement control to provide a low degree of charging efficiency enhancement.

    摘要翻译： 一种防止在增压器切换时的空气量突然变化的内燃机控制装置。 控制装置进入小型涡轮增压器主要在较低转速和低负载侧运转的小型涡轮增压器运行状态，并进入较大的涡轮增压器运行状态，大型涡轮增压器主要运行， 高转速和高负载。 在小涡轮操作状态下，控制装置可以通过使用清扫效果来进行充电效率提高控制。 在从小涡轮操作状态切换到大涡轮操作状态之前，控制装置预测大型涡轮增压器是否将快速或缓慢地增加其增压压力。 当预测到缓慢的增压压力时，控制装置进行充电效率提高控制，以提供低充电效率的提高。