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公开(公告)号：US20210135483A1
公开(公告)日：2021-05-06
申请号：US17083878
申请日：2020-10-29
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shigemasa HIROOKA , Shingo KORENAGA
Abstract: A control device for a vehicle is provided with a catalyst warmup control part supplying electric power to a conductive base to warm up a catalyst device if the temperature of the conductive base is less than a predetermined temperature and the state of charge of the battery is less than a second state of charge larger than a first state of charge when the state of charge of the battery is equal to or greater than the predetermined first state of charge and a driving mode of the vehicle is set to an EV mode in which at least the output of the rotary electric machine is controlled to make the vehicle run. The catalyst warmup control part sets the second state of charge so that the second state of charge becomes larger in the case where the resistance value of the conductive base is large compared to when it is small.
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公开(公告)号：US20180163592A1
公开(公告)日：2018-06-14
申请号：US15828580
申请日：2017-12-01
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shigemasa HIROOKA
IPC: F01N3/20
CPC classification number: F01N3/2013 , F01N3/20 , F01N9/00 , F01N2900/1602 , F01N2900/1631
Abstract: First processing and second processing are carried out, wherein in the first processing, the electric power to be supplied to the heat generation element is set to a first electric power in a first period of time such that a temperature inside the heat generation element falls within an allowable temperature range, and in the second processing, at least one of setting the electric power to be supplied to said heat generation element from said power supply to a second electric power smaller than said first electric power, and/or setting the electric power to be supplied to said heat generation element from said power supply to zero, is performed in a second period of time such that the temperature difference inside the heat generation element falls within an allowable temperature difference range.
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公开(公告)号：US20230094717A1
公开(公告)日：2023-03-30
申请号：US17897594
申请日：2022-08-29
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shigemasa HIROOKA , Koichi KITAURA , Yoshio YAMASHITA , Shingo KORENAGA , Katsuhiro ITO , Hikaru SHIOZAWA
Abstract: A control device is applied to an internal combustion engine equipped with an electric heating catalyst system provided with an EHC. The control device executes a preheating process to warm up an exhaust gas reduction catalyst prior to a start of the internal combustion engine by supplying electric power to the EHC, when the control device determines that a temperature of the exhaust gas reduction catalyst is lower than an activation temperature. The control device executes a determination process for determining whether water is adhered to a catalyst carrier. The control device starts the internal combustion engine without executing the preheating process when the control device determines by the determination process that water is adhered to the catalyst carrier, even when the control device determines that the temperature of the exhaust gas reduction catalyst is lower than the activation temperature.
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公开(公告)号：US20200232371A1
公开(公告)日：2020-07-23
申请号：US16744184
申请日：2020-01-16
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tsuyoshi OBUCHI , Shigemasa HIROOKA , Shingo KORENAGA
Abstract: An abnormality detection apparatus calculates an actually supplied electrical energy defined as the integrated value of electrical power actually supplied to the electrically heated catalyst over a specific period from the time when the supply of electrical power to the electrically heated catalyst is started and a target electrical energy in the specific period, and further calculates, from these integrated values, an accomplishment parameter relating to the ratio of the actually supplied electrical energy to the target electrical energy. The abnormality detection apparatus detects an abnormality of the electrically heated catalyst by comparing the accomplishment parameter with a specific threshold. The abnormality detection apparatus is configured to set the specific threshold according to the temperature of the electrically heated catalyst at the time when the supply of electrical power is started.
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公开(公告)号：US20220333516A1
公开(公告)日：2022-10-20
申请号：US17656096
申请日：2022-03-23
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shigemasa HIROOKA , Koichi KITAURA , Yoshio YAMASHITA , Shingo KORENAGA , Katsuhiro ITO , Hikaru SHIOZAWA
Abstract: A controller is applied to an internal combustion engine in which an electrically heated catalyst that is heated when supplied with electric power is installed in an exhaust passage. The controller is configured to perform a preheating process of warming up a first exhaust catalyst by supplying electric power to the electrically heated catalyst through control over a power supply before a start of the internal combustion engine. The controller is configured to, when an insulation resistance of the electrically heated catalyst at a start of the preheating process is lower than a threshold, perform the preheating process while decreasing a voltage supplied to the electrically heated catalyst.
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Patent Agency Ranking
公开(公告)号：US20210215078A1
公开(公告)日：2021-07-15
申请号：US17118018
申请日：2020-12-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shigemasa HIROOKA , Shingo KORENAGA
Abstract: An exhaust gas purifying device for an internal combustion engine includes: an electrically heated catalyst (EHC) including an insulating member; an insulation resistance detector; and a processor. The processor is configured to: acquire an insulation resistance value of the insulating member using the insulation resistance detector each time a trip of the vehicle starts; and execute diagnostic processing to diagnose the state of the EHC when the acquired insulation resistance value is equal to or less than a reference value. In the diagnostic processing, the processor is configured to determine whether or not there is an insulation abnormality of the EHC, based on an index value indicating the degree of decrease in an insulation resistance value of the insulating member of the current trip with respect to an insulation resistance value of the insulating member of one or more past trips including the last trip.
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公开(公告)号：US20170009624A1
公开(公告)日：2017-01-12
申请号：US15200136
申请日：2016-07-01
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shigemasa HIROOKA
CPC classification number: F01N3/20 , F01N3/0885 , F01N3/101 , F01N2900/0416 , F01N2900/1402 , F01N2900/1624 , F02D41/0295 , F02D41/1454 , F02D41/146 , F02D2200/0814
Abstract: An exhaust purification system of an internal combustion engine comprises an upstream side catalyst, a downstream side catalyst, a downstream side air-fuel ratio sensor provided between the upstream side catalyst and the downstream side catalyst, and a control device able to control an air-fuel ratio of exhaust gas flowing into the upstream side catalyst as air-fuel ratio control. In the air-fuel ratio control, the control device switches the air-fuel ratio of the exhaust gas to the lean air-fuel ratio when the output air-fuel ratio of the downstream side air-fuel ratio sensor becomes the rich judged air-fuel ratio or less and switches the air-fuel ratio of the exhaust gas to the rich air-fuel ratio when the oxygen storage amount of the upstream side catalyst becomes the switching reference storage amount or more. During the air-fuel ratio control, the control device increases the concentration of NOX in the exhaust gas flowing into the upstream side catalyst when the oxygen storage amount of the downstream side catalyst becomes the limit storage amount or less as control for increasing NOX. As a result, NOX is kept from flowing out from the downstream side catalyst.
Abstract translation: 内燃机的排气净化系统包括上游侧催化剂，下游侧催化剂，设置在上游侧催化剂和下游侧催化剂之间的下游侧空燃比传感器，以及能够控制空气 - 作为空燃比控制，流入上游侧催化剂的废气的燃料比。 在空燃比控制中，当下游侧空燃比传感器的输出空燃比成为浓气判定空燃比时，控制装置将排气的空燃比切换为稀空燃比， 燃料比以下，当上游侧催化剂的氧气储存量成为切换基准保持量以上时，将排气的空燃比切换为浓空燃比。 在空燃比控制中，当下游侧催化剂的储氧量成为极限储存量以下时，控制装置增加流入上游侧催化剂的排气中的NO x浓度，作为增加NOX的控制。 结果，NOX不会从下游侧催化剂流出。
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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：US20170226910A1
公开(公告)日：2017-08-10
申请号：US15423867
申请日：2017-02-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazuki TSURUMI , Hiroshi TANAKA , Shigemasa HIROOKA , Shingo KORENAGA
CPC classification number: F01N3/2026 , B01D53/9477 , B01D2255/10 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/2092 , B01D2255/9032 , B01D2255/904 , B01D2255/908 , B01J23/38 , B01J23/63 , B01J35/0006 , B01J35/04 , F01N3/281 , F01N13/0097 , F01N2510/068 , F01N2570/16 , Y02T10/26
Abstract: In an EHC, a ratio of a heat capacity of the second catalyst body with respect to a heat capacity of the first catalyst body is made within a range of 0.67-1.5. A ratio of an amount of coat of an OSC material in the second catalyst body with respect to an amount of coat of an OSC material in the first catalyst body is made larger than the ratio of the heat capacity of the second catalyst body with respect to the heat capacity of the first catalyst body. A ratio of an amount of support of a noble metal in the second catalyst body with respect to an amount of support of a noble metal in the first catalyst body is made smaller than the ratio of the heat capacity of the second catalyst body with respect to the heat capacity of the first catalyst body.
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公开(公告)号：US20150125352A1
公开(公告)日：2015-05-07
申请号：US14527993
申请日：2014-10-30
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shigemasa HIROOKA
IPC: B01D53/86
CPC classification number: B01D53/8675 , B01D2255/2073 , B01D2255/702 , B01D2257/106 , B01D2259/4566 , B01J21/18 , B01J23/34 , B01J35/0006 , B01J37/0244
Abstract: An air purification apparatus for a vehicle, including a vehicle component provided at a location where air flows while the vehicle is moving, includes: an ozone decomposing body that contains MnO2 and activated carbon as components that decompose ozone, the ozone decomposing body including a first layer and a second layer, the first layer being provided on a surface of the vehicle component, the content of MnO2 being higher than that of activated carbon in the first layer, and the content of activated carbon being higher than that of MnO2 in the second layer.
Abstract translation: 一种车辆空气净化装置，包括设置在车辆移动时空气流动的位置的车辆部件，包括：臭氧分解体，其包含MnO 2和活性炭作为分解臭氧的成分，所述臭氧分解体包括第一 层和第二层，第一层设置在车辆部件的表面上，MnO2的含量高于第一层中的活性炭的含量，并且活性炭的含量比第二层中的MnO 2的含量高 层。
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