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公开(公告)号：US10823040B2
公开(公告)日：2020-11-03
申请号：US15634073
申请日：2017-06-27
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shinya Asaura , Masaaki Sato , Ryohei Ono , Yuji Miyoshi
IPC: F01P3/20 , F01N3/20 , F01N3/36 , F01N3/10 , F01N13/00 , B01D53/94 , B01J23/44 , B01J29/06 , B01J35/00 , B01J35/04 , F01N3/035 , F02B23/02 , F02B37/00
Abstract: An exhaust gas control system includes an upstream purification device disposed in an exhaust passage of the internal combustion engine, a downstream purification device disposed in a portion of the exhaust passage downstream from the upstream purification device, a fuel addition valve disposed in a portion of the exhaust passage upstream from the upstream purification device, and a urea addition valve disposed in a portion of the exhaust passage between the upstream purification device and the downstream purification device, and a cooling device. The cooling device is configured such that refrigerant cools the fuel addition valve first and then cools the urea addition valve subsequent to the fuel addition valve.
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公开(公告)号：US10233805B2
公开(公告)日：2019-03-19
申请号：US15634156
申请日：2017-06-27
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shinya Asaura , Masaaki Sato , Ryohei Ono , Yuji Miyoshi
Abstract: A first fuel addition valve disposed in a portion of a first exhaust passage upstream from a first upstream purification device, a first urea addition valve disposed in a portion of the first exhaust passage between the first upstream purification device and a first downstream purification device, and a first valve cooling passage configured such that i) refrigerant passes the first urea addition valve and the first fuel addition valve in order, and ii) the refrigerant cools the first fuel addition valve after the refrigerant cools the first urea addition valve.
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公开(公告)号：US10648391B2
公开(公告)日：2020-05-12
申请号：US16221684
申请日：2018-12-17
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Ryohei Ono , Masaaki Sato , Katsuhiro Ito , Akira Mikami , Kazuhiro Umemoto , Daichi Imai
Abstract: A controller estimates a first estimated adsorption amount which is an amount of adsorption of ammonia in the SCR catalyst at the time when the SCR catalyst is assumed to be in a predetermined abnormal state, estimates a second estimated adsorption amount at the time when the SCR catalyst is assumed to be in a predetermined normal state, calculates a first slip development temperature based on the first estimated adsorption amount, and calculates a second slip development temperature based on the second estimated adsorption amount. The controller, when carrying out an abnormality diagnosis based on a concentration of ammonia in an exhaust gas at the downstream side of the SCR catalyst, carries out diagnostic temperature control so as to control the temperature of the SCR catalyst to a temperature which is equal to or more than the first slip development temperature and is less than the second slip development temperature.
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Patent Agency Ranking
公开(公告)号：US10221741B2
公开(公告)日：2019-03-05
申请号：US15609287
申请日：2017-05-31
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Shinya Asaura , Masaaki Sato , Ryohei Ono
Abstract: An exhaust gas control apparatus has an exhaust gas control element other than an SCR catalyst. A temperature increase treatment unit executes temperature increase treatment that increases temperature of exhaust gas flowing into the exhaust gas control apparatus so as to increase the temperature of the exhaust gas control element to a specified target temperature. In this case, when operation of the internal combustion engine is stopped while the temperature increase treatment unit is not executing the temperature increase treatment, addition of an additive to the SCR catalyst from an addition valve is executed after operation stop of the internal combustion engine. When operation of the internal combustion engine is stopped while the temperature increase treatment unit is executing the temperature increase treatment, addition of the additive to the SCR catalyst from the addition valve is not executed after operation stop of the internal combustion engine.
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公开(公告)号：US09835069B2
公开(公告)日：2017-12-05
申请号：US15377328
申请日：2016-12-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuriko Hagimoto , Takeru Shirasawa , Ryohei Ono , Kenji Furui
CPC classification number: F01N3/208 , B01D46/0027 , B01D53/9418 , B01D53/9431 , B01D53/9495 , B01D2279/30 , F01N3/035 , F01N3/2066 , F01N11/002 , F01N2240/25 , F01N2510/06 , F01N2560/025 , F01N2560/026 , F01N2560/06 , F01N2560/08 , F01N2560/14 , F01N2610/02 , F01N2900/1406 , F01N2900/1622
Abstract: An object of the disclosure is to adjust the ammonia adsorption amount in an SCR catalyst supported on an SCR filter as close as possible to a target adsorption amount in an exhaust gas purification system including the SCR filter. In a system according to the disclosure, the quantity of ammonia supplied by an ammonia supplier is made smaller when a differential pressure change rate at the time when ammonia is supplied by the ammonia supplier is lower than a predetermined threshold than when the differential pressure change rate at the time when ammonia is supplied by the ammonia supplier is equal to or higher than the predetermined threshold. Moreover, when the differential pressure change rate is lower than the predetermined threshold, the change in the quantity of ammonia supplied by the ammonia supplier relative to the change in the filter PM deposition amount is kept equal to zero.
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公开(公告)号：US20170175605A1
公开(公告)日：2017-06-22
申请号：US15377328
申请日：2016-12-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuriko HAGIMOTO , Takeru SHIRASAWA , Ryohei Ono , Kenji FURUI
CPC classification number: F01N3/208 , B01D46/0027 , B01D53/9418 , B01D53/9431 , B01D53/9495 , B01D2279/30 , F01N3/035 , F01N3/2066 , F01N11/002 , F01N2240/25 , F01N2510/06 , F01N2560/025 , F01N2560/026 , F01N2560/06 , F01N2560/08 , F01N2560/14 , F01N2610/02 , F01N2900/1406 , F01N2900/1622
Abstract: An object of the disclosure is to adjust the ammonia adsorption amount in an SCR catalyst supported on an SCR filter as close as possible to a target adsorption amount in an exhaust gas purification system including the SCR filter. In a system according to the disclosure, the quantity of ammonia supplied by an ammonia supplier is made smaller when a differential pressure change rate at the time when ammonia is supplied by the ammonia supplier is lower than a predetermined threshold than when the differential pressure change rate at the time when ammonia is supplied by the ammonia supplier is equal to or higher than the predetermined threshold. Moreover, when the differential pressure change rate is lower than the predetermined threshold, the change in the quantity of ammonia supplied by the ammonia supplier relative to the change in the filter PM deposition amount is kept equal to zero.
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公开(公告)号：US10753249B2
公开(公告)日：2020-08-25
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：US10677125B2
公开(公告)日：2020-06-09
申请号：US16210008
申请日：2018-12-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Ryohei Ono , Masaaki Sato , Katsuhiro Ito , Akira Mikami , Kazuhiro Umemoto , Daichi Imai
Abstract: An exhaust gas purification apparatus for an internal combustion engine includes the adsorbent, the catalyst and the heat generating element, wherein in cases where the residual capacity of the battery is smaller than a first predetermined value required for raising the temperature of the catalyst to an activation temperature thereof, and in cases where the residual capacity of the battery is larger than a second predetermined value which is smaller than the first predetermined value and which is required for raising the temperature of the adsorbent to a predetermined temperature at which the adsorbent exhibits adsorption performance required at the time of starting of the internal combustion engine, an amount of electric power to be supplied to the heat generating element from the battery is adjusted such that the temperature of the adsorbent becomes the predetermined temperature.
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