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1. 发明专利

JP2012127295A Exhaust emission control device for internal combustion engine 有权
标题翻译：用于内燃机的排气排放控制装置
公开(公告)号：JP2012127295A
公开(公告)日：2012-07-05
申请号：JP2010280842
申请日：2010-12-16
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI , SAWADA YUTAKA , KIDOKORO TORU , KOBUCHI GO
IPC分类号： F01N3/28 , F01N3/08 , F02D41/04
CPC分类号： Y02T10/24
摘要： PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine including an NSR catalyst and an SCR that suppresses production reaction of N2O and achieves a high NOx purification rate.SOLUTION: The exhaust emission control device for an internal combustion engine 10 having a lean operation mode includes: an NOstorage-reduction catalyst (NSR catalyst) 16 arranged in an exhaust passage 12 of the internal combustion engine 10; an NOselective-reduction catalyst (SCR) 18 arranged downstream from the NSR catalyst 16; and a rich spike device for performing rich spike operation at predetermined timing during the lean operation. The rich spike device is configured to perform two-stage rich spike for switching an exhaust air-fuel ratio during rich spike from a first rich air-fuel ratio (A/F=12) to a second rich air-fuel ratio (A/F=13) after a predetermined lean period.
摘要翻译：解决的课题：提供一种内燃机的废气排放控制装置，其包括抑制N 2 O的生成反应的NSR催化剂和SCR，能够实现高NO x净化率。解决方案：具有稀薄操作模式的内燃机10的废气排放控制装置包括：排气管，其具有：NOS SB POS =“POST”> 储存还原催化剂内燃机10的排气通路12; 设置在NSR催化剂16下游的NO 选择还原催化剂（SCR）18; 以及用于在精益操作期间的预定定时执行丰富的峰值操作的丰富的尖峰装置。丰富的穗形装置构造成执行两级富穗，用于在从第一浓空燃比（A / F = 12）到第二浓空燃比（A / F = 12）的富穗期间切换排气空燃比， F = 13）。版权所有（C）2012，JPO＆INPIT

2. 发明专利

JP2012082710A Degradation detection system for nox sensor 审中-公开
标题翻译： NOX传感器降解检测系统
公开(公告)号：JP2012082710A
公开(公告)日：2012-04-26
申请号：JP2010227472
申请日：2010-10-07
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI , KIDOKORO TORU
IPC分类号： F01N3/18 , F01N3/08
CPC分类号： G01N33/007 , F01N3/0842 , F01N3/106 , F01N3/2066 , F02D41/1463 , F02D41/222 , F02D2041/1431 , Y02T10/22 , Y02T10/40
摘要： PROBLEM TO BE SOLVED: To provide a technology capable of detecting or determining degradation of a NOX sensor in a construction in which the NOX sensor is disposed in an exhaust passageway downstream of a selective reduction catalyst.SOLUTION: A degradation detection system includes: a three-way catalyst disposed in the exhaust passage of an internal combustion engine; the selective reduction catalyst disposed in the exhaust passage downstream of the three-way catalyst; and a NOsensor disposed in the exhaust passage downstream of the selective reduction catalyst. A rich process is executed that is a process for causing an air-fuel ratio of exhaust flowing into the three-way catalyst to become rich, and it is determined that the NOsensor has degraded on a condition that a measurement value from the NOsensor does not reach nor exceed a threshold value within a prescribed time that follows the start of execution of the rich process.
摘要翻译：要解决的问题：提供一种能够检测或确定在选择性还原催化剂下游的排气通道中设置有NOX传感器的结构中的NO x传感器的劣化的技术。解决方案：劣化检测系统包括：设置在内燃机的排气通道中的三元催化剂; 所述选择还原催化剂设置在所述三元催化剂下游的所述排气通路中; 以及设置在选择还原催化剂下游的排气通道中的NO X 传感器。执行作为使流入三元催化剂的排气的空燃比变浓的处理的浓缩处理，并且确定NO X 传感器在来自NO X 传感器的测量值在富进程执行开始之后的规定时间内未达到或超过阈值的条件下已劣化。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2012057571A Exhaust emission control apparatus of internal combustion engine 审中-公开
标题翻译：内燃机排气控制装置
公开(公告)号：JP2012057571A
公开(公告)日：2012-03-22
申请号：JP2010203053
申请日：2010-09-10
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI , KIDOKORO TORU
IPC分类号： F01N3/08 , B01D53/94 , F01N3/28 , F02D41/04
CPC分类号： Y02T10/24 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide an exhaust emission control apparatus of an internal combustion engine that prevents fuel consumption from deteriorating during the rich spike and obtains a high NOx purification rate by a combination of an NSR catalyst and an SCR, in the internal combustion engine including the NSR catalyst and the SCR.SOLUTION: The exhaust emission control apparatus of the internal combustion engine 10 capable of a lean operation includes: an NOx adsorber (NSR catalyst) 16 arranged on an exhaust passage 12 of the internal combustion engine 10; an NOx selective catalytic reduction (SCR) 18 arranged downstream of the NSR catalyst 16; an NOx adsorbing amount estimator for estimating an NOx adsorbing amount which has been adsorbed on the NSR catalyst 16; and a rich spike device for performing the rich spike at predetermined timing during the lean operation. The rich spike device controls a target A/F during the rich spike to be a predetermined slight rich air-fuel ratio (A/F=13) when the NOx adsorbing amount is less than a predetermined adsorbing limit.
摘要翻译：解决的问题：提供一种内燃机的废气排放控制装置，其防止燃料消耗在富穗期间劣化，并且通过NSR催化剂和SCR的组合获得高的NOx净化率，在包括NSR催化剂和SCR的内燃机。解决方案：能够进行稀薄操作的内燃机10的废气排放控制装置包括：设置在内燃机10的排气通道12上的NOx吸附器（NSR催化剂）16; 布置在NSR催化剂16下游的NOx选择性催化还原（SCR）18; 用于估计吸附在NSR催化剂16上的NOx吸附量的NOx吸附量估计器; 以及用于在精益操作期间以预定定时执行丰富尖峰的丰富尖峰装置。当NOx吸附量小于预定的吸附极限时，富穗装置将富穗期间的目标A / F控制为预定的微浓空燃比（A / F = 13）。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2010196552A Exhaust emission control device of internal combustion engine 有权
标题翻译：内燃机排气控制装置
公开(公告)号：JP2010196552A
公开(公告)日：2010-09-09
申请号：JP2009040999
申请日：2009-02-24
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI , MIYASHITA SHIGEKI
IPC分类号： F01N3/10 , B01D53/86 , B01D53/94 , F01N3/20 , F01N3/24 , F02D41/04 , F02D41/14 , F02M25/07
摘要： PROBLEM TO BE SOLVED: To efficiently suppress the amount of the particulate matter passing through a catalytic converter even when the amount of the particulate matter discharged from an internal combustion engine is large in an exhaust emission control device of an internal combustion engine. SOLUTION: This exhaust emission control device of an internal combustion engine includes the catalytic converter for burning particulate matter, a means for determining whether the amount of the particulate matter discharged from the internal combustion engine is in a particulate matter excessive state in which the discharged amount exceeds a predetermined level, a means for performing an air-fuel ratio perturbation control to vibrate the air-fuel ratio of the internal combustion engine between a rich air-fuel ratio and a lean air-fuel ratio when the discharged amount is determined to be in the particulate matter excessive state, and a means for maintaining the air-fuel ratio near a theoretical air-fuel ratio when the discharged amount is determined to be not in the particulate matter excessive state. In the particulate matter excessive state, active oxygen is produced by performing the air-fuel ratio perturbation control, and the combustion of the particulate matter can be promoted by the active oxygen. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：即使在内燃机的废气排放控制装置中从内燃机排出的颗粒物质的量大时，也能有效地抑制通过催化转化器的颗粒物质的量。解决方案：内燃机的废气排放控制装置包括用于燃烧颗粒物质的催化转化器，用于确定从内燃机排放的颗粒物质的量是否处于颗粒物质过度状态的装置，其中排出量超过预定水平时，用于执行空燃比扰动控制的装置，以便当排出量为排气量时，使内燃机的空燃比在浓空燃比与稀空燃比之间振动被确定为处于颗粒状物质过量状态的装置，以及当排出量被确定为不处于颗粒状物质过度状态时，将空燃比维持在理论空燃比附近的装置。在颗粒物过量状态下，通过进行空燃比扰动控制来生成活性氧，并且可以通过活性氧促进颗粒物质的燃烧。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2010196551A Exhaust emission control device of internal combustion engine 审中-公开
标题翻译：内燃机排气控制装置
公开(公告)号：JP2010196551A
公开(公告)日：2010-09-09
申请号：JP2009040998
申请日：2009-02-24
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI
IPC分类号： F01N3/10 , B01D53/86 , B01D53/94 , F01N3/08 , F01N3/18 , F01N3/22 , F01N3/24 , F02M25/07
CPC分类号： Y02T10/121 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To efficiently burn particulate matter even when a catalytic converter is not sufficiently activated in the exhaust emission control device of an internal combustion engine. SOLUTION: In an internal combustion engine 10 allowing lean-burn operation, when an EGR catalyst 34 having a function of burning particulate matter is not activated, an aqueous solution of urea is injected from a urea injection device 30 in front of the EGR catalyst. The injected urea is converted into ammonia by hydrolysis, and temporarily trapped to a trap material 32. When a lean exhaust gas containing oxygen flows into the EGR passage 28, the ammonia trapped to the trap material 32 is converted into NOx by the reaction with oxygen, and the NOx flows to the EGR catalyst 34. Since a sufficient amount of NOx flows to the EGR catalyst 34, the particulate matter reacts with NOx and burns efficiently even when the EGR catalyst 34 is not sufficiently activated. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：即使在内燃机的废气排放控制装置中催化转化器没有被充分活化的情况下，也能有效地燃烧颗粒物质。解决方案：在允许稀薄燃烧操作的内燃机10中，当具有燃烧颗粒物质的功能的EGR催化剂34未被活化时，尿素水溶液从尿素喷射装置30的前方注入 EGR催化剂。注入的尿素通过水解转化成氨，并暂时捕获到捕集材料32.当含有氧气的贫废气流入EGR通道28时，通过与氧气的反应将捕集到捕集材料32的氨转化为NOx ，并且NOx流到EGR催化剂34.由于足够量的NO x流向EGR催化剂34，所以即使当EGR催化剂34没有充分活化时，颗粒物质也与NOx反应并有效燃烧。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2009174374A Exhaust emission control device for internal combustion engine 有权
标题翻译：用于内燃机的排气排放控制装置
公开(公告)号：JP2009174374A
公开(公告)日：2009-08-06
申请号：JP2008012493
申请日：2008-01-23
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI
IPC分类号： F02M25/07 , F01N3/02 , F01N3/20 , F01N3/22
CPC分类号： Y02T10/121
摘要： PROBLEM TO BE SOLVED: To appropriately control temperature of an EGR catalyst by providing a plurality of EGR passages and controlling exhaust gas discharged from an internal combustion engine by a flow-in quantity control valve. SOLUTION: An exhaust emission control device 1 for an internal combustion engine includes a turbocharger 31 including a compressor 31a arranged in an intake passage 21 of the internal combustion engine 11 and a turbine 31b arrange in an exhaust passage 22, and an exhaust catalyst 32 disposed at a downstream side of the turbine. In this case, the exhaust emission control device includes a first EGR passage 23 connected to an upstream side of the turbine, a second EGR passage 24 connected to a section downstream of the turbine and upstream of the exhaust catalyst, a merged EGR passage 25 of which one end is composed by merging the first and the second EGR passages and of which another end is connected to the upstream side of the compressor, an EGR catalyst 33 arranged in the merged EGR passage, flow-in quantity adjusting means 34, 35 for mutually and independently adjusting quantity of exhaust gas flowing into the first and the second EGR passages respectively, and a control means 50 for controlling the flow-in quantity adjusting means. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过设置多个EGR通道并通过流入量控制阀控制从内燃机排出的排气来适当地控制EGR催化剂的温度。解决方案：内燃机的废气排放控制装置1包括涡轮增压器31，涡轮增压器31包括布置在内燃机11的进气通道21中的压缩机31a和布置在排气通道22中的涡轮机31b，以及排气催化剂32设置在涡轮机的下游侧。在这种情况下，废气排放控制装置包括与涡轮的上游侧连接的第一EGR通路23，与涡轮下游的部分和排气催化剂的上游连接的第二EGR通路24，其一端由第一EGR通路和第二EGR通路合流而另一端与压缩机的上游侧连接，配置在合流EGR通路内的EGR催化剂33，流入量调节单元34,35 相互独立地调节流入第一和第二EGR通道的排气量，以及用于控制流入量调节装置的控制装置50。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2009097469A Exhaust emission control system for internal combustion engine 审中-公开
标题翻译：用于内燃机的排气排放控制系统
公开(公告)号：JP2009097469A
公开(公告)日：2009-05-07
申请号：JP2007271533
申请日：2007-10-18
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI
IPC分类号： F01N3/24 , B01D53/94 , F01N3/08 , F01N3/20 , F01N3/28 , F02D41/04 , F02D41/14 , F02D43/00
CPC分类号： Y02T10/24
摘要： PROBLEM TO BE SOLVED: To provide a technology for increasing a NOx conversion rate by an exhaust emission control system for an internal combustion engine provided with an SCR. SOLUTION: This exhaust emission control system includes the SCR 3 arranged in an exhaust passage 5 of the internal combustion engine 1 and selectively reducing NOx by using NH 3 as a reducing agent, generates NH 3 in exhaust gas by supplying a rich component into the exhaust gas by bank control or a rich spike, and supplies the generated NH 3 to the SCR 3. When a temperature of the exhaust gas made to flow into the SCR 3 exceeds a reference temperature which is controlled based on the upper limit of a temperature at which a NOx reduction reaction using the NH 3 as the reducing agent proceeds in the SCR 3, a channel selector valve 11 changes over an exhaust gas distribution channel to a passage passing through a U-shaped pipe 10. An air-fuel ratio difference between banks is reduced in the latter period of the bank control, and thereby the temperature of the SCR 3 immediately after the termination of the bank control does not exceed a reference temperature. The temperature of the SCR 3 does not exceed the reference temperature, and the NOx reduction reaction in the SCR 3 proceeds favorably. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过用于具有SCR的内燃机的废气排放控制系统来提高NOx转化率的技术。解决方案：该废气排放控制系统包括布置在内燃机1的排气通道5中的SCR 3，并且通过使用NH 3 SB 3作为还原剂选择性地还原NOx，产生NH 制成流入SCR 3的气体超过基于在SCR 3中进行作为还原剂的使用NH 3 SB的NO x还原反应的温度的上限进行控制的基准温度，通道切换阀11将废气分配通道切换成通过U形管10的通道。在组控制的后一时段内，组之间的空燃比差降低，从而SCR的温度 3银行控制终止后立即不超过参考温度。 SCR 3的温度不超过参考温度，SCR 3中的NOx还原反应有利地进行。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2008309043A Exhaust emission control device for internal combustion engine 审中-公开
标题翻译：用于内燃机的排气排放控制装置
公开(公告)号：JP2008309043A
公开(公告)日：2008-12-25
申请号：JP2007156831
申请日：2007-06-13
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI
IPC分类号： F01N3/24 , B01D53/94 , F01N3/00 , F01N3/08 , F02D41/02 , F02D41/04 , F02D45/00
CPC分类号： Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine inhibiting formation of aldehyde and improving cleaning performance of NO X by controlling the air fuel ratio in exhaust gas even when fuel containing alcohol components is used. SOLUTION: The exhaust emission control device 30 is provided in an exhaust path 7 of the internal combustion engine 1, and is provided with an upstream side catalyst 11 purifying exhaust gas containing alcohol component and flowing in the exhaust path 7, a downstream side catalyst 12 provided at a downstream side of the upstream side catalyst 11 in an exhaust gas flow direction, an A/F sensor 15 detecting air fuel ratio of exhaust gas, a hydrogen concentration sensor 16 detecting hydrogen concentration of exhaust gas, and a NO X sensor 17 detecting nitrogen oxide concentration in exhaust gas. Air fuel ratio of the exhaust gas is controlled based on NO X emission quantity and hydrogen concentration, and quantity of hydrogen formation is controlled to keep NO X emission quantity not greater than a predetermined value. Consequently, aldehyde formed from alcohol is made react to acid and formation of aldehyde is inhibited. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种通过控制排气中的空气燃料比来抑制醛的形成和改善NO X 的清洁性能的排气排放控制装置，即使当燃料使用含有醇的组分。解决方案：废气排放控制装置30设置在内燃机1的排气路径7中，并且设置有净化含有醇组分并在排气路径7中流动的排气的上游侧催化剂11，下游侧设置在上游侧催化剂11的排气流动方向的下游侧的侧面催化剂12，检测废气的空气燃料比的A / F传感器15，检测废气的氢浓度的氢浓度传感器16和NO 传感器17检测废气中的氮氧化物浓度。基于NO X 排放量和氢气浓度来控制废气的空燃比，并且控制氢的形成量以保持NO X 排放量不大于预定值。因此，由醇形成的醛与酸反应，醛的形成被抑制。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2008069699A Exhaust emission control device 审中-公开
标题翻译：排气排放控制装置
公开(公告)号：JP2008069699A
公开(公告)日：2008-03-27
申请号：JP2006248439
申请日：2006-09-13
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI , MIYASHITA SHIGEKI
IPC分类号： F01N3/08 , B01D53/94 , F01N3/20 , F01N3/24
摘要： PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of obtaining an enough HC adsorption characteristic when a plurality of exhaust passages are provided in an internal combustion engine. SOLUTION: The exhaust emission control device (100) comprises exhaust systems (101, 102) arranged in each of a plurality of cylinder groups (11, 12) of an internal combustion engine (10), pre-catalysts (20, 30) provided in each of the plurality of exhaust systems, and a flow rate adjusting means (40) for adjusting the flow rate of the exhaust gas to the plurality of exhaust systems, wherein the plurality of exhaust systems are connected by a communication pipe (103) on the upstream side of the pre-catalyst and join on the downstream side of the pre-catalyst, and at least one of a plurality of pre-catalysts is provided with the HC adsorption characteristic. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在内燃机中设置多个排气通路时能够获得足够的HC吸附特性的废气排放控制装置。解决方案：排气排放控制装置（100）包括布置在内燃机（10）的多个气缸组（11,12）的每一个中的排气系统（101,102），预催化剂（20， 30），以及用于调节排气到多个排气系统的流量的流量调节装置（40），其中多个排气系统通过连通管（ 103）在预催化剂的上游侧并且接合在预催化剂的下游侧，并且多个预催化剂中的至少一个具有HC吸附特性。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2007138811A Exhaust pipe for internal combustion engine 审中-公开
标题翻译：用于内燃机的排气管
公开(公告)号：JP2007138811A
公开(公告)日：2007-06-07
申请号：JP2005332963
申请日：2005-11-17
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KENJI , FUKUDA TAKANORI
IPC分类号： F01N3/24 , B01D53/86 , F01N13/08
摘要： PROBLEM TO BE SOLVED: To provide an exhaust pipe capable of keeping conversion performance of exhaust emission control catalyst high by optimizing flow-in style of an exhaust gas to the exhaust emission control catalyst. SOLUTION: This exhaust pipe 20 for the internal combustion engine establishes communication between an exhaust port 9 of an engine main body and the exhaust emission control catalyst 13 and includes a flow change section in which direction of flow of whole exhaust gas flowing in the exhaust pipe changes. The exhaust pipe 20 includes a restriction part 24 in a right downstream of the flow change section and flow path cross section area of the restriction part is smaller than flow path cross section area of the exhaust pipe in a right upstream of the restriction part. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过优化废气排放到废气排放控制催化剂的流入方式，提供能够使废气排放控制催化剂的转化性能保持较高的排气管。解决方案：用于内燃机的排气管20建立发动机主体的排气口9与废气排放控制催化剂13之间的连通，并且包括流动变化部分，其中流入的整个废气的流动方向排气管改变。排气管20包括在流动变化部的右下游的限制部24，并且限制部的流路截面积比限制部的右上游的排气管的流路截面面积小。版权所有（C）2007，JPO＆INPIT

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