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公开(公告)号：US20190195102A1
公开(公告)日：2019-06-27
申请号：US16210009
申请日：2018-12-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Daichi IMAI , Hiroshi KOBAYASHI
Abstract: In an exhaust gas purification apparatus for an internal combustion engine, the apparatus comprising NOx storage reduction catalyst, and a controller comprising at least one processor is configured to carry out rich spike, wherein in cases where the storage amount of NOx is the same, in a period of time from the completion of the execution of the last rich spike to the start of the execution of the current rich spike, the controller makes a period of execution of the current rich spike longer, and/or a degree of richness of a rich air fuel ratio achieved by the execution of the current rich spike larger, in the case where a period of time in which a temperature of the NOx storage reduction catalyst becomes equal to or higher than a predetermined determination temperature is long than in the case where it is short.
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公开(公告)号：US20180209321A1
公开(公告)日：2018-07-26
申请号：US15861946
申请日：2018-01-04
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Daichi IMAI
IPC: F01N9/00 , F01N3/10 , B01D53/94 , B01J21/04 , B01J23/02 , F01N3/08 , F01N3/023 , B01J38/12 , B01J38/02 , B01J23/96 , B01J23/58 , B01J23/42
CPC classification number: F01N9/002 , B01D53/944 , B01D53/9477 , B01D53/9495 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2042 , B01D2255/90 , B01D2255/915 , B01D2258/014 , B01J21/04 , B01J23/02 , B01J23/42 , B01J23/58 , B01J23/63 , B01J23/92 , B01J23/96 , B01J35/04 , B01J37/0215 , B01J38/02 , B01J38/12 , F01N3/023 , F01N3/035 , F01N3/085 , F01N3/0871 , F01N3/106 , F01N2430/06 , F01N2900/1602 , F02D41/008 , F02D41/0285 , F02D41/029 , Y02T10/47
Abstract: An exhaust purification system for an internal combustion engine provided with an SOX storing and releasing catalyst and a particulate filter arranged downstream of the SOX storing and releasing catalyst. SOX release processing is performed for releasing SOX stored in the SOX storing and releasing catalyst. The SOX released by the SOX release processing is supplied to the particulate filter. The larger a time integral showing a sum of products of a temperature of the particulate filter and a time during which it is maintained at that temperature from when SOX release processing was performed, or the greater the number of times the filter regeneration processing is performed, the greater the concentration of SOX released by the SOX release processing.
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公开(公告)号：US20170211451A1
公开(公告)日：2017-07-27
申请号：US15416235
申请日：2017-01-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Daichi IMAI , Hiromasa NISHIOKA , Kiyoshi FUJIWARA , Yoshio YAMASHITA , Kouta TANAKA
CPC classification number: F01N9/002 , B01D46/0061 , B01D46/446 , B01D46/448 , B01D2279/30 , F01N3/021 , F01N3/023 , F01N3/0231 , F01N3/025 , F01N3/0253 , F01N3/027 , F01N3/035 , F01N11/002 , F01N2560/06 , F01N2560/08 , F01N2560/14 , F01N2610/03 , F01N2900/0416 , F01N2900/0601 , F01N2900/1404 , F01N2900/1406 , F01N2900/1602 , F01N2900/1606 , F02D41/025 , F02D41/029 , F02D41/1441 , F02D41/1448 , F02D2200/0812 , Y02T10/26 , Y02T10/47
Abstract: An exhaust gas control system for an internal combustion engine, before execution of a filter regeneration process, executes a pre-regeneration process that is a process of raising a temperature of a filter to a second target temperature lower than a first target temperature and increasing the concentration of NO2 contained in exhaust gas flowing into the filter for a predetermined period. An execution time of the filter regeneration process when a physical quantity that correlates with a speed of change in a detected value of a differential pressure sensor during execution of the pre-regeneration process is large is shorter than an execution time of the filter regeneration process when the physical quantity is small.
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公开(公告)号：US20170211452A1
公开(公告)日：2017-07-27
申请号：US15416428
申请日：2017-01-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Daichi IMAI , Hiromasa NISHIOKA , Kiyoshi FUJIWARA , Yoshio YAMASHITA , Kouta TANAKA
CPC classification number: F01N9/002 , B01D46/0063 , B01D46/442 , B01D46/46 , B01D2279/30 , F01N3/021 , F01N3/023 , F01N3/0253 , F01N3/027 , F01N3/035 , F01N2560/08 , F01N2900/0418 , F01N2900/0601 , F01N2900/1402 , F01N2900/1406 , F01N2900/1602 , F01N2900/1606 , Y02T10/47
Abstract: An exhaust gas control system for an internal combustion engine, before execution of a filter regeneration process, executes a pre-regeneration process that is a process of raising a temperature of a filter to a second target temperature lower than a first target temperature and increasing the concentration of NO2 contained in exhaust gas flowing into the filter for a predetermined period. The first target temperature during execution of the filter regeneration process in the case where a speed of change in a detected value of a differential pressure sensor during execution of the pre-regeneration process is high is set so as to be lower than the first target temperature in the case where the speed of change is low.
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公开(公告)号：US20170157602A1
公开(公告)日：2017-06-08
申请号：US15324394
申请日：2015-05-11
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroshi OTSUKI , Hiromasa NISHIOKA , Kazuhiro ITO , Daichi IMAI , Yoshihisa TSUKAMOTO , Yasumasa NOTAKE
CPC classification number: B01J37/0215 , B01D53/885 , B01D53/92 , B01D53/94 , B01D2046/2437 , B01D2255/902 , B01D2255/9155 , B01J37/0219 , B01J37/0221 , B01J37/0236 , B01J37/0244 , B05D7/22 , F01N3/0222 , F01N3/035 , F01N2230/00 , F01N2330/06 , F01N2330/60
Abstract: A gel which contains a component of a catalyst is prepared. The gel and another gel are arranged in layers at a position which faces open ends of exhaust flow passages of a wall flow-type particulate filter. Next, a pusher is used to push and pack the gel and other gel through the open ends to the insides of the exhaust flow passages. Next, the particulate filter is made to dry to thereby make the partition walls carry the catalyst on their surfaces or in their micropores.
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Patent Agency Ranking
公开(公告)号：US20160138448A1
公开(公告)日：2016-05-19
申请号：US14896725
申请日：2014-06-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazuhiro ITOH , Hiromasa NISHIOKA , Daichi IMAI , Yoshihisa TSUKAMOTO , Hiroshi OTSUKI , Yasumasa NOTAKE
CPC classification number: F01N3/035 , B01D46/2429 , B01D53/94 , B01D2046/2437 , B01D2275/307 , F01N3/0222 , F01N3/0232 , F01N2510/0682
Abstract: An exhaust gas purification filter includes an inflow/outflow passage through which exhaust gas flows in/out, and a partition. The outflow passage and the inflow passage is alternately arranged. The partition is configured to divide the inflow passage and the outflow passage from each other, and being porous. The partition includes a coated zone where a surface of a base of the partition is covered with a first coating layer having an average pore diameter smaller than an average pore diameter of the base, and a non-coated zone where the surface of the base is not covered with the first coating layer on a downstream side of the coated zone. The average pore diameter of the base is large enough for ash to pass through the partition, and the first coating layer is constituted by a plurality of particle groups with different average particle diameters from each other.
Abstract translation: 废气净化过滤器包括废气流入/流出的流入/流出通道和分隔件。 流出通道和流入通道交替布置。 所述分隔构造成将所述流入通道和所述流出通路彼此分开，并且是多孔的。 隔壁包括涂覆区域，其中隔板的基部的表面覆盖有平均孔径小于基底的平均孔径的第一涂层，以及基底表面的非涂覆区域 未被涂覆区的下游侧的第一涂层覆盖。 基体的平均孔径足够大以使灰分通过隔壁，第一涂层由平均粒径不同的多个粒子组构成。
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7.发明申请公开(公告)号：US20160108844A1
公开(公告)日：2016-04-21
申请号：US14883933
申请日：2015-10-15
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiromasa NISHIOKA , Daichi IMAI
CPC classification number: F01N3/2066 , F01N3/103 , F01N9/00 , F01N2260/04 , F02D19/0636 , F02D41/0025 , F02D41/027 , F02D2200/0612 , F02D2200/0802 , Y02T10/36 , Y02T10/47
Abstract: A concentration of sulfur components contained in fuel is determined, without adding any special sensor for determining the sulfur concentration of the fuel. To this end, a sulfur concentration determination system for an internal combustion engine is provided with an exhaust gas purification device including an oxidation catalyst disposed in an exhaust passage, and a supply device for supplying fuel to exhaust gas flowing into the exhaust gas purification device, wherein after the end of poisoning elimination processing of the oxidation catalyst, fuel supply processing is carried out in which the fuel is supplied to the exhaust gas purification device in such a manner that an amount of fuel supplied to the exhaust gas purification device per unit time becomes constant, and the concentration of sulfur components contained in the fuel is determined by using as a parameter a period of time (an oxidation reaction period of time) required from a starting point in time of the fuel supply processing until the temperature of the oxidation catalyst drops to an initial temperature or below.
Abstract translation: 确定燃料中所含的硫成分的浓度，而不添加用于确定燃料的硫浓度的特殊传感器。 为此，用于内燃机的硫浓度测定系统设置有排气净化装置，该排气净化装置包括设置在排气通道中的氧化催化剂，以及用于向流入排气净化装置的废气供给燃料的供给装置， 其中，在氧化催化剂的中毒消除处理结束之后，进行燃料供给处理，其中燃料以每单位时间供给排气净化装置的燃料量供给至废气净化装置 变得恒定，并且通过使用从燃料供给处理的起始点到氧化温度所需的一段时间（氧化反应时间）作为参数来确定燃料中包含的硫成分的浓度 催化剂降至初始温度或更低。
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公开(公告)号：US20230042626A1
公开(公告)日：2023-02-09
申请号：US17808793
申请日：2022-06-24
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Koichi KITAURA , Shigemasa HIROOKA , Shingo KORENAGA , Daichi IMAI
Abstract: A control apparatus is applied to an internal combustion engine where an EHC and a filter are arranged in this sequence from an upstream side. The control apparatus performs a regeneration process for removing particulate matter deposited in the filter through oxidation, and a recovery process for raising the temperature of exhaust gas to a temperature higher than in the case of the regeneration process and removing the particulate matter deposited at a front end portion of the EHC through oxidation when it is determined that the insulation resistance of the EHC is equal to or lower than a prescribed value. The control apparatus performs the regeneration process and then the recovery process when it is determined that the insulation resistance is equal to or lower than the prescribed value and the deposition amount of the particulate matter in the filter is equal to or larger than a prescribed amount.
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公开(公告)号：US20190234269A1
公开(公告)日：2019-08-01
申请号：US16258721
申请日：2019-01-28
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Ryohei ONO , Masaaki SATO , Katsuhiro ITO , Akira MIKAMI , Kazuhiro UMEMOTO , Daichi IMAI
Abstract: An exhaust emission control device for an internal combustion engine according to the present disclosure includes an exhaust emission control catalyst provided in an exhaust passage in an internal combustion engine and divided into a preceding catalyst and a succeeding catalyst, and a heating device provided in the exhaust passage between the preceding catalyst and the succeeding catalyst. The exhaust emission control catalyst is divided into the preceding catalyst and the succeeding catalyst so that a ratio of a capacity of the preceding catalyst to a total displacement of the internal combustion engine is from 0.3 to 1.5.
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公开(公告)号：US20190195103A1
公开(公告)日：2019-06-27
申请号：US16210012
申请日：2018-12-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroshi KOBAYASHI , Toshihiro MORI , Daichi IMAI , Keiichiro AOKI
Abstract: Rich spike is carried out in an efficient manner. In an exhaust gas purification apparatus for an internal combustion engine which performs lean burn operation, the apparatus includes an NOx storage reduction catalyst, a controller to carry out rich spike, to calculate a storage amount of NOx, to calculate a storage amount of nitrates, and calculate a nitrate ratio, wherein the controller controls a timing at which the rich spike is carried out, based on the nitrate ratio.
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