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公开(公告)号：US06296813B1
公开(公告)日：2001-10-02
申请号：US09195715
申请日：1998-11-19
申请人： Hitoshi Ishii , Kimiyoshi Nishizawa
发明人： Hitoshi Ishii , Kimiyoshi Nishizawa
IPC分类号： B01D5388
CPC分类号： F01N3/0835 , F01N3/0814 , F01N13/0097 , F01N2250/12 , F01N2570/12 , Y02T10/22
摘要： An inner surface of a cell 12 of a honeycomb carrier 11 except a downstream end of the inner surface in the exhaust direction is coated with a HC (hydrocarbon) adsorption material 13. The inner surface of the cell 12 coated with the HC adsorption material 13 is coated with a three way catalytic converter layer 14. A portion X located upstream side of the exhaust flow and having the three way catalytic converter layer 14 on the HC adsorption material 13, and a three way catalytic converter layer portion Y located downstream side of the exhaust flow are formed on an inner surface of the cell 12 of the honeycomb carrier 11. With this feature, the HC repeats elimination, re-adsorption, elimination, re-adsorption, . . . from the portion of the HC adsorption catalyst 10 upstream of the exhaust flow, finally reaches the downstream end of the portion X including the three way catalytic converter layer 14 on the HC adsorption material 13. Since the downstream end of this portion X is provided with the three way catalytic converter layer portion Y, the HC is converted by the three way catalytic converter layer 14 of this portion Y.
摘要翻译： 蜂窝状载体11的除了排气方向的内表面的下游端的内表面涂覆有HC（烃）吸附材料13.涂覆有HC吸附材料13的电池12的内表面 涂覆有三元催化转化器层14.位于排气流的上游侧的部分X和在HC吸附材料13上具有三元催化转化器层14，并且位于下游侧的三元催化转化器层部分Y 在蜂窝载体11的电池12的内表面上形成排气。由此，HC重复排除，再吸附，消除，再吸附。 。 。 从排气流上游的HC吸附催化剂10的部分最终到达包含HC吸附材料13上的三元催化转化器层14的部分X的下游端。由于该部分X的下游端设有 三元催化转化器层部分Y，HC由该部分Y的三元催化转化器层14转化。
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公开(公告)号：US06170260B2
公开(公告)日：2001-01-09
申请号：US09151279
申请日：1998-09-11
申请人： Hitoshi Ishii , Kimiyoshi Nishizawa
发明人： Hitoshi Ishii , Kimiyoshi Nishizawa
IPC分类号： F01N300
CPC分类号： F01N3/0835 , F01N3/0814 , F01N13/009 , F01N2510/0682 , F01N2510/0684 , F02D41/024 , F02D41/027 , F02P5/1506 , Y02T10/26 , Y02T10/42 , Y02T10/46
摘要： Exhaust gas due to combustion is discharged into the atmosphere through a combined catalytic-hydrocarbon adsorbent 20. The combined catalytic-hydrocarbon adsorbent consists of a hydrocarbon adsorbent layer 20A and a three-way catalytic layer 20B. The hydrocarbon adsorbent layer 20A adsorbs hydrocarbons at a lower temperature, and desorbs hydrocarbons at a higher temperature. The three-way catalytic layer 20B purifies hydrocarbons desorbed from the hydrocarbon adsorbent layer 20A. To reduce the amount of hydrocarbons discharged to atmosphere, when the running condition of the engine is in the idling region, the ignition timing is retarded. This retarding of the ignition timing is limited to the time period after the hydrocarbon adsorbent layer 20A begins desorbing hydrocarbons until three-way catalytic layer 20B activates. With this design, the temperature of the combined catalyst-hydrocarbon adsorbent rises rapidly and the amount of hydrocarbon emission is controlled to be minimum.
摘要翻译： 由燃烧产生的废气通过组合的催化烃吸附剂20排放到大气中。组合的催化烃吸附剂由烃吸附剂层20A和三元催化剂层20B组成。 烃吸附剂层20A在较低温度下吸附碳氢化合物，并在较高温度下解吸烃。 三元催化层20B净化从烃吸附层20A脱附的烃。 为了减少排放到大气中的碳氢化合物的量，当发动机的运转状态处于怠速区域时，点火正时被延迟。 点火正时的这种延迟被限制在烃类吸附剂层20A开始解吸碳氢化合物直到三元催化剂层20B活化之后的时间段。 通过这种设计，组合催化剂 - 烃类吸附剂的温度迅速上升，碳氢化合物排放量控制在最小。
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公开(公告)号：US07748213B2
公开(公告)日：2010-07-06
申请号：US11633644
申请日：2006-12-05
申请人： Suki I , Kenichi Sato , Kimiyoshi Nishizawa
发明人： Suki I , Kenichi Sato , Kimiyoshi Nishizawa
CPC分类号： F01N13/011 , F01N3/08 , F01N3/2053 , F01N11/007 , F01N13/10 , F01N2410/00 , F01N2410/06 , F01N2410/10 , F01N2560/025 , F01N2560/14 , F02M26/15 , F02M26/35 , F02M26/42 , Y02T10/47
摘要： An exhaust gas passageway of an internal combustion engine is basically provided with a main exhaust passageway, a bypass exhaust passageway, a bypass catalytic converter provided in the bypass exhaust passageway, a bypass control valve, an upstream air-fuel ratio sensor and a downstream air-fuel ratio sensor. The bypass exhaust passageway bypasses a portion of the main exhaust passageway between an upstream junction and a downstream junction. The bypass control valve opens or closes a portion of the main exhaust passageway. The upstream air-fuel ratio sensor is disposed upstream of the bypass catalytic converter to sense air-fuel ratio of an exhaust gas flowing into the bypass catalytic converter. The downstream air-fuel ratio sensor is disposed downstream of the bypass catalytic converter to sense air-fuel ratio of the exhaust gas flowing out of the bypass catalytic converter.
摘要翻译： 内燃机的废气通路基本上设置有主排气通路，旁通排气通路，旁通排气通路中设置的旁通催化转化器，旁通控制阀，上游空燃比传感器和下游空气 - 燃料比传感器。 旁通排气通道在上游接头和下游接头之间绕过主排气通道的一部分。 旁通控制阀打开或关闭主排气通道的一部分。 上游空燃比传感器设置在旁通催化转化器的上游，以检测流入旁通催化转化器的废气的空燃比。 下游空燃比传感器设置在旁通催化转化器的下游，以检测从旁通催化转化器流出的废气的空燃比。
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公开(公告)号：US07559196B2
公开(公告)日：2009-07-14
申请号：US11502198
申请日：2006-08-10
申请人： Takao Inoue , Sunki I , Motoharu Akaba , Kimiyoshi Nishizawa
发明人： Takao Inoue , Sunki I , Motoharu Akaba , Kimiyoshi Nishizawa
IPC分类号： F01N3/00
CPC分类号： F01N3/08 , F01N3/2053 , F01N13/10 , F01N2410/06
摘要： An exhaust system of the internal combustion engine comprises upstream main paths for cylinders that are attached to a side of a cylinder head and extend towards a side of the engine, and are connected to the respective cylinders; a downstream main path in which the upstream main paths join so as to become one flow path; a main catalytic converter provided on the downstream main path; bypasses that are split from the upstream main paths or the downstream main path; a bypass catalytic converter that is provided on the bypass; and flow path switching valves that open and close the upstream main paths so that exhaust discharged from the cylinders flows into the bypass. The bypass catalytic converter is provided below the upstream main paths.
摘要翻译： 内燃机的排气系统包括连接到气缸盖一侧并朝向发动机侧延伸并且连接到相应气缸的用于气缸的上游主路径; 下游主路径，其中上游主路径连接成为一个流路; 主催化转化器，设在下游主路上; 旁路从上游主路径或下游主路径分离; 旁路催化转化器，其设置在旁路上; 以及打开和关闭上游主路径的流路切换阀，使得从气缸排出的废气流入旁路。 旁路催化转化器设置在上游主路径的下方。
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公开(公告)号：US07509800B2
公开(公告)日：2009-03-31
申请号：US11295728
申请日：2005-12-07
申请人： Sungi I , Takao Inoue , Kimiyoshi Nishizawa
发明人： Sungi I , Takao Inoue , Kimiyoshi Nishizawa
IPC分类号： F01N3/00
CPC分类号： F01N3/101 , F01N13/009 , F01N13/0093 , F01N13/0097 , F01N13/10 , F01N2390/00 , F01N2410/06 , F02D9/04 , F02D9/109 , F02M26/15 , F02M26/42 , Y02T10/22
摘要： An exhaust system of an internal combustion engine having at least one cylinder comprises a main exhaust passage connected to the cylinder; a main catalytic converter disposed in the main exhaust passage; a bypass exhaust passage that diverges from the main exhaust passage, the bypass exhaust passage having a gas flow resistance larger than that of the main exhaust passage and having a downstream end connected to the main exhaust passage at a position upstream of the main catalytic converter; an auxiliary catalytic converter disposed in the bypass exhaust passage; and a gas flow switching device that is capable of forcing exhaust gas from the cylinder of the engine to flow toward the bypass exhaust passage when assuming a given operation position.
摘要翻译： 具有至少一个气缸的内燃机的排气系统包括连接到气缸的主排气通道; 主催化转化器，设置在主排气通道中; 所述旁通排气通路与所述主排气通路分开，所述旁通排气通路的气流阻力大于所述主排气通路的气流阻力，并且在所述主催化转化器的上游位置具有与所述主排气通路连接的下游端; 辅助催化转化器，设置在旁通排气通道中; 以及当假设给定的操作位置时，能够迫使来自发动机的气缸的废气流向旁通排气通道的气流切换装置。
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6.发明申请公开(公告)号：US20070271907A1
公开(公告)日：2007-11-29
申请号：US11752990
申请日：2007-05-24
申请人： Shunsuke Yamana , Sunki I , Kenichi Sato , Kimiyoshi Nishizawa
发明人： Shunsuke Yamana , Sunki I , Kenichi Sato , Kimiyoshi Nishizawa
CPC分类号： F01N3/2053 , F01N2410/06 , F01N2430/10 , F02D41/006 , F02D41/0065 , F02M26/01 , F02M26/13 , F02M26/615 , Y02T10/47
摘要： An internal combustion engine includes a main catalyst disposed in a main passage and a bypass catalyst disposed in a bypass passage bypassing the main passage on an upstream side of the main catalyst. The bypass passage has a smaller transverse cross-sectional area than the main passage. The internal combustion engine further includes a passage open/close unit, a residual gas amount changing unit, and a controller. The passage open/close unit is disposed in a portion of the main passage bypassed by the bypass passage to switch between an open state and a closed state. The residual gas amount changing unit is configured to change an amount of residual gas inside a combustion chamber. The controller is configured to control the residual gas amount changing unit when a passage opening condition for switching the passage open/close unit from the closed state to the open state is satisfied.
摘要翻译： 内燃机包括设置在主通路中的主催化剂和旁通催化剂，旁通催化剂设置在主催化剂上游侧旁通主路的旁路通路中。 旁通通道的横截面面积小于主通道。 内燃机还包括通道打开/关闭单元，残余气体量改变单元和控制器。 通道打开/关闭单元设置在由旁路通道旁路的主通道的部分中，以在打开状态和关闭状态之间切换。 残留气体量变更部构成为能够改变燃烧室内的残留气体量。 控制器被配置为当用于将通道打开/关闭单元从关闭状态切换到打开状态的通道打开条件被满足时，控制残余气体量改变单元。
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公开(公告)号：US07229596B2
公开(公告)日：2007-06-12
申请号：US09941733
申请日：2001-08-30
申请人： Hidetoshi Ito , Kimiyoshi Nishizawa , Ritsuo Sato
发明人： Hidetoshi Ito , Kimiyoshi Nishizawa , Ritsuo Sato
CPC分类号： B01D53/9454 , F01N3/0814 , F01N3/0835 , F01N3/101 , F01N13/009 , F01N13/0093 , Y02T10/22
摘要： The Rh content by percentage in an HC absorbent catalytic converter provided in an exhaust pipe is greater than the Rh content by percentage in an upstream three-way catalyst. In this way, even when HC which has been temporarily absorbed is emitted in an atmosphere and the exhaust gas becomes rich, the HC absorbent catalytic converter displays improved oxidization and removal of HC due to the high content by percentage of Rh which has a high HC conversion ratio in rich atmospheres. There is no necessity to control the air-fuel ratio to a strongly lean ratio and so HC removal can be improved while maintaining suppression of NOx emissions.
摘要翻译： 在排气管中设置的HC吸收式催化转化器中的Rh含量大于上游三元催化剂中的Rh含量百分比。 这样，即使临时吸收的HC在气氛中排出并且排气变浓，则HC吸收催化转化器由于具有高HC含量的Rh的高含量而显示改善的HC的氧化和除去 丰富的气氛中的转化率。 没有必要将空燃比控制到强的稀薄比例，因此可以在保持NO排放的抑制的同时提高HC去除量。
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公开(公告)号：US20060048738A1
公开(公告)日：2006-03-09
申请号：US11214781
申请日：2005-08-31
IPC分类号： F02D9/02
CPC分类号： F02F1/4235 , F02B31/06 , F02D9/103 , F02F1/4242 , Y02T10/146
摘要： An air intake structure is provided with an air intake control valve disposed in the air intake passage. The air intake control valve has a valve element pivotally mounted at one end adjacent to a passage wall of the air intake passage. The air intake control valve is configured to control a gas flow based on the rotational position of the valve element. At least one horizontal partitioning plate extends along the flow direction of an intake air. The horizontal partitioning plate can be stationary or moveable with the valve element. Optionally, the valve element has a swirl-producing notch and a vertical partitioning plate extends substantially perpendicular to the horizontal partitioning plate from a position corresponding to a vertical side edge of the swirl-producing notch when the air intake control valve is fully closed. The vertical partitioning plate can be stationary or moveable with the valve element.
摘要翻译： 进气结构设置有设置在进气通道中的进气控制阀。 进气控制阀具有枢转地安装在与进气通道的通道壁相邻的一端处的阀元件。 进气控制阀构造成基于阀元件的旋转位置来控制气流。 至少一个水平分隔板沿进气的流动方向延伸。 水平分隔板可以与阀元件固定或移动。 可选地，当进气控制阀完全关闭时，阀元件具有涡流产生槽口，垂直分隔板从与涡流产生槽口的垂直侧边缘相对应的位置大致垂直于水平分隔板延伸。 垂直分隔板可以静止或与阀元件一起移动。
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公开(公告)号：US06962049B2
公开(公告)日：2005-11-08
申请号：US10379681
申请日：2003-03-06
CPC分类号： F02B27/04 , F01N3/28 , F01N13/08 , F01N13/10 , Y02T10/146
摘要： In an exhaust manifold of a four-cylinder engine four cylinders of which line up in order of cylinder #1, cylinder #2, cylinder #3 and cylinder #4, temperature rise performance of a manifold catalyst improves by shortening a total length of the exhaust manifold while preventing exhaust gas interference between the cylinders. Therefore, an exhaust manifold branch of cylinder #1 and an exhaust manifold branch of cylinder #4 in outward sides of the engine that are not fired in succession are made convergent with its convergence angle θ1 being equal to or below 20 degrees to form a first convergent exhaust manifold branch and an exhaust manifold branch of cylinder #2 and an exhaust manifold branch of cylinder #3 between the cylinder #1 and cylinder #4 that are not fired in succession are made convergent at a minimum distance having a laterally projected shape to form a second convergent exhaust manifold branch. The first and the second convergent exhaust manifold branches are thereafter convergent at a convergence angle θ3 from 0 degrees to 20 degrees.
摘要翻译： 在四缸发动机的排气歧管中，按气缸＃1，气缸＃2，气缸＃3和气缸＃4的顺序排列的四个气缸，通过缩短总气瓶的总长度来改善歧管催化剂的升温性能 排气歧管，同时防止气缸之间的废气干扰。 因此，使发动机的外侧的气缸＃1的排气歧管分支和发动机的外侧的气缸＃4的排气歧管分支不连续点火，会聚到会聚角θ1等于或低于20度，形成 第一收敛排气歧管分支和气缸＃2的排气歧管分支和气缸＃1的气缸＃1的排气歧管分支在气缸＃1和气缸＃4之间不连续点火，使其以具有横向投影形状的最小距离会聚 以形成第二收敛排气歧管分支。 此后，第一和第二收敛排气歧管分支在会聚角θ3处从0度收敛到20度。
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10.发明授权公开(公告)号：US06341487B1
公开(公告)日：2002-01-29
申请号：US09537515
申请日：2000-03-29
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0885 , F01N2430/06 , F01N2570/04 , F02B2075/125 , F02D41/024 , F02D41/028 , F02D41/3023 , F02D41/402 , F02D2200/0806 , F02D2200/0818 , Y02T10/123 , Y02T10/26
摘要： A catalyst (9) is disposed in an exhaust passage (8) of an internal combustion engine (1) for trapping nitrogen oxides in the exhaust from a fuel mixture of a lean air-fuel ratio and reducing trapped nitrogen oxides in the exhaust from a fuel mixture of an air-fuel ratio other than the lean air-fuel ratio. The catalyst (9) also traps sulfur oxides in the exhaust when the catalyst temperature is less than a predetermined temperature, and discharges the trapped sulfur oxides when the catalyst temperature rises above the predetermined temperature. A microprocessor (10) calculates for example the sulfur oxide stored amount of the catalyst (9) based on engine running conditions, and determines that sulfur oxide discharge condition is satisfied when the sulfur oxide stored amount exceeds a predetermined amount. When the discharge condition is satisfied, the microprocessor (10) controls the fuel injection amount and fuel injection timing of the fuel injector (6) so as to generate a stratified air-fuel mixture in the combustion chamber (3). The stratified air-fuel mixture comprises a first layer surrounding the spark plug (7) and a second layer situated outside the first layer. The first layer comprises an atomized air-fuel mixture of a rich air-fuel ratio within an ignitable range. The second layer is leaner than the first layer.
摘要翻译： 催化剂（9）设置在内燃机（1）的排气通道（8）中，用于从废空气的燃料混合物捕获排气中的氮氧化物，并从排气中的氮气中还原捕集的氮氧化物 燃料混合物之间的空燃比而不是稀空燃比。 当催化剂温度低于预定温度时，催化剂（9）还捕集排气中的硫氧化物，并且当催化剂温度升高到预定温度以上时，将被捕获的硫氧化物排出。 微处理器（10）基于发动机运转条件计算催化剂（9）的硫氧化物储存量，并且当硫氧化物储存量超过预定量时，确定满足硫氧化物排放条件。 当满足排放条件时，微处理器（10）控制燃料喷射器（6）的燃料喷射量和燃料喷射正时，从而在燃烧室（3）中产生分层的空气 - 燃料混合物。 分层空气 - 燃料混合物包括围绕火花塞（7）的第一层和位于第一层外部的第二层。 第一层包括在可燃范围内的富空燃比的雾化空气 - 燃料混合物。 第二层比第一层更薄。
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