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公开(公告)号：US10054020B2
公开(公告)日：2018-08-21
申请号：US15476377
申请日：2017-03-31
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kohei Yoshida
CPC classification number: F01N3/206 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/0885 , F01N3/2066 , F01N3/208 , F01N9/00 , F01N13/009 , F01N2250/12 , F01N2260/04 , F01N2430/06 , F01N2610/02 , F01N2900/1404 , F01N2900/1411 , F01N2900/1618 , Y02T10/24
Abstract: During execution of a first purification process of fluctuating a hydrocarbon concentration in exhaust gas flowing into a first catalyst with an amplitude within a prescribed range at a time interval within a prescribed range, when a switch request to a second purification process of purifying NOx in a second catalyst by adding urea water into the exhaust gas is generated, the switch to the second purification process is prohibited on the condition that a current NOx purification rate (a first purification rate R1) is higher than a purification rate (a second purification rate R2) on the assumption that the second purification process is executed, and an HC poisoning recovery stand-by process of reducing an additive amount of hydrocarbon per once in the first purification process is executed so as to reduce a slip amount of hydrocarbon into the downstream of the first catalyst.
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公开(公告)号：US09427704B2
公开(公告)日：2016-08-30
申请号：US14429508
申请日：2012-09-25
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki Bisaiji , Kohei Yoshida , Mikio Inoue
IPC: B01D53/94
CPC classification number: B01D53/9495 , B01D53/9431 , F01N3/0253 , F01N3/035 , F01N3/0842 , F01N3/085 , F01N3/36 , F01N9/00 , F01N9/002 , F01N2260/04 , F01N2610/03 , F02D41/0055 , F02M26/05 , F02M26/06 , F02M26/15 , F02M2200/21 , Y02T10/47
Abstract: In an internal combustion engine, an exhaust purification catalyst: (13), particulate filter (14), and hydrocarbon feed valve (15) are arranged in an engine exhaust passage. A low pressure exhaust gas recirculation system (LPL) is provided for making the exhaust gas downstream of the particulate filter (14) recirculate. If hydrocarbons are injected from the hydrocarbon feed valve (15), the carbon dioxide which is produced in the exhaust purification catalyst (13) is recirculated and the air-fuel ratio of the exhaust gas which flows into the exhaust purification catalyst (13) temporarily drops. At the time of regeneration of the particulate filter (14), hydrocarbons are injected from, the hydrocarbon feed valve (15) so as not to overlap with this temporary drop of the air-fuel ratio.
Abstract translation: 在内燃机中，排气净化催化剂：（13），微粒过滤器（14）和烃供给阀（15）配置在发动机排气通路内。 提供了一种低压排气再循环系统（LPL），用于使颗粒过滤器（14）下游的废气再循环。 如果从烃供给阀（15）喷射烃，则在排气净化催化剂（13）中产生的二氧化碳再循环，并且流入排气净化催化剂（13）的排气的空燃比暂时 滴。 在颗粒过滤器（14）的再生时，从烃供给阀（15）喷射烃，以便不与空燃比的这一临时下降重叠。
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公开(公告)号：US09631535B2
公开(公告)日：2017-04-25
申请号：US14911364
申请日：2014-07-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki Haba , Yusuke Nozaki , Kohei Yoshida
CPC classification number: F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N3/36 , F01N11/00 , F01N11/002 , F01N2610/03 , F01N2900/1602 , F01N2900/1614 , Y02C20/10 , Y02T10/47
Abstract: In an internal combustion engine, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged in an engine exhaust passage. When releasing the stored NOx from the exhaust purification catalyst (13), usually combustion gas of a rich air-fuel ratio is generated in the combustion chamber (2) to make the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst (13) rich. When releasing the stored NOx from the exhaust purification catalyst (13) in case where the temperature of the exhaust purification catalyst (13) is low, the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst (13) is made rich by injecting hydrocarbons from the hydrocarbon feed valve (15).
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公开(公告)号：US10468950B2
公开(公告)日：2019-11-05
申请号：US15334162
申请日：2016-10-25
Inventor： Kohei Yoshida , Junya Satake , Keiichi Kaneshige , Meio Gi
Abstract: This disclosure relates to a method of manufacturing a laminated core including a plurality of poles arranged side by side in a circumferential direction, each pole having three or more magnet housing holes and magnets housed in the magnet housing holes. The manufacturing method includes: a step of preparing a lamination having the magnet housing holes; a step of injecting sealing resin into a pair of magnet housing holes arranged at symmetric positions with respect to a line extending in a radial direction of the lamination, with the magnets being disposed in the pair of respective magnet housing holes; and a step of injecting sealing resin into another magnet housing hole, with the magnet being disposed in the magnet housing hole.
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公开(公告)号：US09238200B2
公开(公告)日：2016-01-19
申请号：US14152629
申请日：2014-01-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazuhiro Umemoto , Kohei Yoshida , Mikio Inoue , Yuki Bisaiji
CPC classification number: B01D53/9454 , B01D53/9409 , B01D53/9422 , B01D53/9495 , B01D2251/208 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/91 , B01D2258/012 , F01N3/035 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N9/007 , F01N2240/30 , F01N2510/06 , F01N2900/1402 , F01N2900/1614 , F02D41/0275
Abstract: A method for purifying exhaust gas of an internal combustion engine including flowing an exhaust gas containing NOx and a concentration of hydrocarbons in an exhaust gas passage that contains an exhaust purification catalyst, wherein the concentration of hydrocarbons is vibrated within a predetermined range of amplitude and period, and a least a portion of the hydrocarbons are reformed by the exhaust purification catalyst; reacting the NOx contained in the exhaust gas and the reformed hydrocarbons to produce a reducing intermediate; and chemically reducing, wherein at the time of engine operation, a demanded produced amount of the reducing intermediate required for chemically reducing the NOx is calculated, and the amplitude and vibration period of the concentration of hydrocarbons flowing into the exhaust purification catalyst are controlled so that an amount of the reducing intermediate produced becomes the demanded produced amount.
Abstract translation: 一种内燃机的排气净化方法，其特征在于，在含有排气净化催化剂的排气通路中含有含有NOx的废气和烃浓度的废气，其中所述烃的浓度在振幅和周期的预定范围内振动 ，并且通过排气净化催化剂将至少一部分烃重整; 使排气中所含的NOx与重整烃反应，生成还原中间体; 和化学还原，其中在发动机运转时，计算要求的化学还原NOx所需的还原中间体的产生量，并且控制流入排气净化催化剂的烃浓度的振幅和振动周期，使得 所产生的还原中间体的量成为所需量。
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Patent Agency Ranking
公开(公告)号：US20150231570A1
公开(公告)日：2015-08-20
申请号：US14429508
申请日：2012-09-25
Applicant: Toyota Jidosha Kabushiki Kaisha
Inventor： Yuki Bisaiji , Kohei Yoshida , Mikio Inoue
IPC: B01D53/94
CPC classification number: B01D53/9495 , B01D53/9431 , F01N3/0253 , F01N3/035 , F01N3/0842 , F01N3/085 , F01N3/36 , F01N9/00 , F01N9/002 , F01N2260/04 , F01N2610/03 , F02D41/0055 , F02M26/05 , F02M26/06 , F02M26/15 , F02M2200/21 , Y02T10/47
Abstract: In an internal combustion engine, an exhaust purification catalyst: (13), particulate filter (14), and hydrocarbon feed valve (15) are arranged in an engine exhaust passage. A low pressure exhaust gas recirculation system (LPL) is provided for making the exhaust gas downstream of the particulate filter (14) recirculate. If hydrocarbons are injected from the hydrocarbon feed valve (15), the carbon dioxide which is produced in the exhaust purification catalyst (13) is recirculated and the air-fuel ratio of the exhaust gas which flows into the exhaust purification catalyst (13) temporarily drops. At the time of regeneration of the particulate filter (14), hydrocarbons are injected from, the hydrocarbon feed valve (15) so as not to overlap with this temporary drop of the air-fuel ratio.
Abstract translation: 在内燃机中，排气净化催化剂：（13），微粒过滤器（14）和烃供给阀（15）配置在发动机排气通路内。 提供了一种低压排气再循环系统（LPL），用于使颗粒过滤器（14）下游的废气再循环。 如果从烃供给阀（15）喷射烃，则在排气净化催化剂（13）中产生的二氧化碳再循环，并且流入排气净化催化剂（13）的排气的空燃比暂时 滴。 在颗粒过滤器（14）的再生时，从烃供给阀（15）喷射烃，以便不与空燃比的这一临时下降重叠。
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公开(公告)号：US10184379B2
公开(公告)日：2019-01-22
申请号：US15505973
申请日：2015-07-02
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazuhiro Umemoto , Kohei Yoshida
Abstract: A particulate filter for trapping the particulate matter which is contained in the exhaust gas is provided inside an engine exhaust passage. Additional fuel is secondarily injected from a fuel injector in an engine expansion stroke or exhaust stroke or hydrocarbons are secondarily added from an addition valve which is provided upstream of the particulate filter in the exhaust pipe. An amount of hydrocarbons which come from the fuel injector or addition valve and then adhere in the form of a liquid to the inflow end of the particulate filter, and an amount of particulate matter which reaches the inflow end of the particulate filter are respectively estimated. A degree of clogging at the inflow end of the particulate filter is estimated based on the amount of hydrocarbons and the amount of particulate matter.
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公开(公告)号：US09926826B2
公开(公告)日：2018-03-27
申请号：US14914784
申请日：2014-08-14
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kazuhiro Umemoto , Kohei Yoshida , Yuki Bisaiji
CPC classification number: F01N9/002 , F01N3/0814 , F01N3/206 , F01N2430/06 , F01N2610/03 , F01N2610/146 , F01N2610/1493 , F02M26/04 , F02M26/32
Abstract: An internal combustion engine is provided with a hydrocarbon feed valve arranged in an engine exhaust passage. When injection control for injecting hydrocarbons from the hydrocarbon feed valve for exhaust treatment is stopped, to prevent the hydrocarbon feed valve from clogging, hydrocarbons for preventing clogging are injected from the hydrocarbon feed valve when the engine is not discharging soot, that is, when the feed of fuel to the inside of the combustion chamber is stopped and, after hydrocarbons for preventing clogging are injected once, the injection of hydrocarbons for preventing clogging from the hydrocarbon feed valve is stopped until injection control for exhaust treatment is started.
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公开(公告)号：US09617893B2
公开(公告)日：2017-04-11
申请号：US14914386
申请日：2014-07-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuki Bisaiji , Kohei Yoshida , Yuki Haba , Yusuke Nozaki
CPC classification number: F01N3/2066 , F01N3/021 , F01N3/0814 , F01N3/0842 , F01N3/0871 , F01N9/00 , F01N2240/30 , F01N2430/06 , F01N2560/06 , F01N2610/03 , F01N2900/08 , F01N2900/1402 , F01N2900/1602 , Y02T10/47
Abstract: In an internal combustion engine, a hydrocarbon feed valve and an exhaust purification catalyst are arranged in an engine exhaust passage. A first NOX removal method which reduces NOX contained in an exhaust gas by a reducing intermediate which is generated by injecting hydrocarbons from the hydrocarbon feed valve within a predetermined range of period and a second NOX removal method in which an air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst is made rich by a period which is longer than this predetermined range are used. The switching temperatures ST and ST0 of the exhaust purification catalyst at which temperature an NOX removal method is switched from the second NOX removal method to the first NOX removal method, are made lower if the amount of NOX in the exhaust gas flowing into the exhaust purification catalyst increases.
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公开(公告)号：US11146154B2
公开(公告)日：2021-10-12
申请号：US16591635
申请日：2019-10-03
Applicant: Mitsui High-tec, Inc. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kohei Yoshida , Shinya Sano
Abstract: A method of manufacturing a rotor includes mounting a plurality of core members to a shaft in a state by inserting the shaft into a shaft hole that penetrates through the plurality of core members in a height direction. An inner diameter of the shaft hole is larger than an outer diameter of the shaft. The method includes pressing the plurality of stacked core members together in the height direction to form a stack in which the plurality of core members are located adjacent to each other, and the shaft hole is engaged with the shaft.
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