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公开(公告)号：EP1387052A1
公开(公告)日：2004-02-04
申请号：EP03017203.5
申请日：2003-07-29
CPC分类号： F01N13/1805 , F01N13/10 , F01N2470/20
摘要： An exhaust manifold (2) of an engine exhaust apparatus includes a plurality of exhaust branches (B1-B4) and a straight pipe section (SP). The exhaust branches (B1-B4) extend toward a confluence portion (SP) from respective upstream ends (21) to be connected with cylinders of an engine. The straight pipe section (SP) extends from the confluence portion towards a dowstream end adapted to be connected to an exhaust purifying catalyst.
摘要翻译： 发动机排气装置的排气歧管（2）包括多个排气分支（B1-B4）和直管段（SP）。 排气分支（B1-B4）从相应的上游端（21）朝向汇合部（SP）延伸，以与发动机的气缸连接。 直管段（SP）从汇合部分延伸到适于连接到排气净化催化剂的下游端。
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2.发明公开Air-fuel ratio control system for internal combustion engine 有权Luft-Kraftstoff-Verhältnisregeleinrichtungfüreine Brennkraftmaschine
公开(公告)号：EP1270912A2
公开(公告)日：2003-01-02
申请号：EP02012463.2
申请日：2002-06-11
发明人： Sato, Kenichi , Kubo, Kengo , Nishizawa, Kimiyoshi
CPC分类号： F02D41/0275 , F01N3/0842 , F02D41/0007 , Y02T10/24
摘要： An air-fuel ratio control system for an internal combustion engine provided with a NOx trap catalyst which is disposed in an exhaust gas passageway and arranged to trap NOx when the air-fuel ratio of exhaust gas flowing to the NOx trap catalyst is lean and to release and reduce trapped NOx when the air-fuel ratio is rich. The air-fuel ratio control system comprises a sensor for detecting an air-fuel ratio of exhaust gas in the exhaust gas passageway downstream of the NOx trap catalyst. Additionally, a control circuit is provided and configured to cause the engine to operate at a rich air-fuel ratio to accomplish a rich air-fuel ratio engine operation after an engine operation at a lean air-fuel ratio, and continue the rich air-fuel ratio engine operation for a duration even after the sensor has detected that the air-fuel ratio of exhaust gas is rich.
摘要翻译： 具有NOx捕集催化剂的内燃机的空燃比控制装置，其设置在排气通路中，并且在流向NOx捕集催化剂的排气的空燃比为倾斜时捕获NOx， 当空燃比丰富时，释放和减少被捕获的NOx。 空燃比控制系统包括用于检测NOx捕集催化剂下游的废气通道中的排气的空燃比的传感器。 此外，设置控制电路，使发动机以较大的空燃比运转，在发动机以稀薄的空燃比运转后，实现浓空燃比的运转， 即使在传感器检测到排气的空燃比浓之后，燃料比发动机运转持续一段时间。
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3.发明授权
公开(公告)号：EP0943793B1
公开(公告)日：2006-05-17
申请号：EP99105396.8
申请日：1999-03-16
CPC分类号： F02D41/307 , F02D13/0261 , F02D41/024 , F02D41/3023 , F02D41/3094 , F02D41/402 , F02D2041/389 , Y02T10/26
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4.发明公开
公开(公告)号：EP1632660A2
公开(公告)日：2006-03-08
申请号：EP05019378.8
申请日：2005-09-06
IPC分类号： F02B31/06
CPC分类号： F02F1/4242 , F02B31/06 , F02D9/102 , F02D9/103 , Y02T10/146
摘要： An air intake structure is provided with an air intake control valve (20) disposed in the air intake passage (13). The air intake control valve (20) has a valve element (23) pivotally mounted at one end adjacent to a passage wall of the air intake passage (13).
The air intake control valve (20) is configured to control a gas flow based on the rotational position of the valve element (23). A horizontal partitioning plate (25) extends along the flow direction of an intake air. The horizontal partitioning plate (25) can be stationary or moveable with the valve element (23). The valve element (23) has a swirl-producing notch (23c) and a vertical partitioning plate (26) extends substantially perpendicular to the horizontal partitioning plate (25) from a position corresponding to a vertical side edge (23f) of the swirl-producing notch (23c) when the air intake control valve (20) is fully closed. The vertical partitioning plate (26) can be stationary or moveable with the valve element (23).摘要翻译： 进气结构设置有设置在进气通道（13）中的进气控制阀（20）。 进气控制阀（20）具有在与进气通道（13）的通道壁相邻的一端枢转地安装的阀元件（23）。 进气控制阀（20）被构造成基于阀元件（23）的旋转位置来控制气流。 水平分隔板25沿进气的流动方向延伸。 水平分隔板（25）可以与阀元件（23）固定或移动。 阀元件（23）具有旋流产生槽（23c），垂直分隔板（26）从对应于涡流产生槽（23c）的垂直侧边缘（23f）的位置大致垂直于水平分隔板（25）延伸， 当进气控制阀（20）完全关闭时，产生切口（23c）。 垂直分隔板（26）可以与阀元件（23）固定或移动。
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公开(公告)号：EP0930425B1
公开(公告)日：2004-06-09
申请号：EP99100657.8
申请日：1999-01-14
CPC分类号： F01N3/0842 , B01D53/9495 , F01N13/009 , F01N2250/12 , F01N2570/16 , F02D41/0275 , F02D2200/0814 , F02D2200/0816
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公开(公告)号：EP0884458B1
公开(公告)日：2003-01-29
申请号：EP98110467.2
申请日：1998-06-08
CPC分类号： B01D53/9481 , B01D53/8696 , B01D53/945 , B01D53/9495 , F01N3/0842 , F01N13/009 , F01N2250/12 , F01N2430/06 , F02D41/0275 , F02D41/1441 , Y02T10/22
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公开(公告)号：EP1057989A3
公开(公告)日：2002-11-13
申请号：EP00111686.2
申请日：2000-05-31
IPC分类号： F02D41/14
CPC分类号： F02D41/0082 , F02D41/0235 , F02D41/1443
摘要： In an engine having first (#2,#3) and second (#1,#4) cylinder groups, a first sensor (12) senses an air-fuel ratio of an exhaust gas mixture into a first catalytic converter (7) for the first cylinder group, a second sensor (13) senses an air-fuel ratio of an exhaust gas mixture into a second catalytic converter (8) for the second cylinder group. A controller (11) normally controls the air fuel ratios of the first and second cylinder groups independently by using first and second air-fuel ratio feedback correction coefficients. When a diagnosis for the catalytic converters is required, the controller measures a rich time and a lean time in the air-fuel ratio variation of the second cylinder group in accordance with an output of the second sensor to determine a second cylinder group's rich/lean ratio between the rich time and the lean time, calculates a correction quantity to bring the second cylinder group's ratio closer to a target ratio, and determines a modified coefficient by modifying the first air-fuel ratio feedback correction coefficient with the correction quantity feedback-controls the air-fuel ratio of the second cylinder group with the modified coefficient as the second air-fuel ratio feedback correction coefficient.
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公开(公告)号：EP1057989A2
公开(公告)日：2000-12-06
申请号：EP00111686.2
申请日：2000-05-31
IPC分类号： F02D41/14
CPC分类号： F02D41/0082 , F02D41/0235 , F02D41/1443
摘要： In an engine having first and second cylinder groups, a first sensor senses an air-fuel ratio of an exhaust gas mixture into a first catalytic converter for the first cylinder group, a second sensor senses an air-fuel ratio of an exhaust gas mixture into a second catalytic converter for the second cylinder group. A controller normally controls the air fuel ratios of the first and second cylinder groups independently by using first and second air-fuel ratio feedback correction coefficients. When a diagnosis for the catalytic converters is required, the controller measures a rich time and a lean time in the air-fuel ratio variation of the second cylinder group in accordance with an output of the second sensor to determine a second cylinder group's rich/lean ratio between the rich time and the lean time, calculates a correction quantity to bring the second cylinder group's ratio closer to a target ratio, and determines a modified coefficient by modifying the first air-fuel ratio feedback correction coefficient with the correction quantity feedback-controls the air-fuel ratio of the second cylinder group with the modified coefficient as the second air-fuel ratio feedback correction coefficient.
摘要翻译： 在具有第一（＃2，＃3）和第二（＃1，＃4）气缸组的发动机中，第一传感器（12）将废气混合物的空燃比感测为第一催化转化器（7） 第一气缸组，第二传感器（13）将排气混合物的空燃比感测为第二气缸组的第二催化转化器（8）。 控制器（11）通常通过使用第一和第二空燃比反馈校正系数来独立地控制第一和第二气缸组的空燃比。 当需要对催化转化器的诊断时，控制器根据第二传感器的输出来测量第二气缸组的空燃比变化的富时间和稀薄时间，以确定第二气缸组的浓/稀 计算用于使第二气缸组的比例接近目标比的校正量，并且通过用校正量反馈控制修改第一空燃比反馈校正系数来确定修正系数 第二气缸组的空燃比改变系数作为第二空燃比反馈校正系数。
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9.发明公开Exhaust emission control system for internal combustion engine 有权Abgasemissionskontrollsystemfüreinen Verbrennungsmotor
公开(公告)号：EP0943792A2
公开(公告)日：1999-09-22
申请号：EP99105395.0
申请日：1999-03-16
CPC分类号： F01N3/0842 , F01N2550/03 , F01N2570/16 , F02D41/0275 , F02D2200/0808 , F02D2200/0816 , Y02T10/22
摘要： An exhaust emission control system for an internal combustion engine diagnoses a NOx storage capacity of a NOx storage type three-way catalyst disposed in an exhaust passage. A control unit of the exhaust emission control system includes a calculating section which calculates a quantity of fuel to a cylinder to bring an air fuel ratio of air-fuel mixture closed to a target ratio and to output an injection signal to a fuel injector based on the calculated quantity of fuel, an executing section which executes a rich-spike treatment for temporally enriching the air-fuel ratio of air-fuel mixture supplied to the engine in a lean condition, and a diagnosing section which diagnoses a NOx storage capacity of said NOx storage type three-way catalyst on the basis of a peak value of the air-fuel ratio during the rich-spike treatment.
摘要翻译： 用于内燃机的废气排放控制系统诊断设置在排气通道中的NOx存储型三元催化剂的NOx储存容量。 废气排放控制系统的控制单元包括：计算部，该计算部根据气缸的燃料量计算出空燃比混合气体的空燃比为目标比，并将喷射信号输出到燃料喷射器的基础上 计算出的燃料量，执行富时处理以在时间上丰富在稀薄状态下供给到发动机的空气燃料混合物的空燃比的执行部，以及诊断部，其诊断所述 NOx储存型三元催化剂，基于富时处理中空燃比的峰值。
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公开(公告)号：EP0930425A3
公开(公告)日：2001-02-07
申请号：EP99100657.8
申请日：1999-01-14
CPC分类号： F01N3/0842 , B01D53/9495 , F01N13/009 , F01N2250/12 , F01N2570/16 , F02D41/0275 , F02D2200/0814 , F02D2200/0816
摘要： An exhaust emission control system for an internal combustion engine amounted on an automotive vehicle. The exhaust emission control system comprises a first catalyst disposed in an exhaust gas passage of the engine. The first catalyst functions to store NOx in an atmosphere having an air-fuel ratio leaner than a stoichiometric level and to release NOx in an atmosphere having an air-fuel ratio richer than the stoichiometric level and reduce released NOx in presence of HC and CO. A second catalyst is disposed in the exhaust gas passage upstream of the first catalyst and having an oxygen absorbing ability. A control unit is provided including a first section for accomplishing an enrichment treatment by enriching stepwise an air-fuel ratio of an air-fuel mixture to be supplied to the engine to an enrichment degree at a timing at which a lean operation is changed to a stoichiometric operation in the engine, and recovering the enriched air-fuel ratio to the stoichiometric level at a recovery rate immediately after the enriching the air-fuel ratio. A second section of the control unit is for estimating the oxygen absorbing ability of the second catalyst. A third section of the control unit is for correcting the enrichment degree to decrease in the step wise enricbing as the estimated oxygen absorbing ability decreases.
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