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公开(公告)号：US20220301753A1
公开(公告)日：2022-09-22
申请号：US17578856
申请日：2022-01-19
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Noritsugu SAKUMA , Tetsuya SHOJI , Akihito KINOSHITA , Akira KATO
Abstract: A rare earth magnet in which the amount used of a heavy rare earth element is more reduced while maintaining enhancement of the coercive force, and a producing method thereof are provided.
The rare earth magnet of the present disclosure has a main phase 10 and a grain boundary phase 20. The main phase 10 has a composition represented by R12T14B. The main phase 10 has a core part 12 and a shell part 14. Denoting the abundances of R2 and Ce (R2 is heavy rare earth element) occupying 4f site of the shell part 14 as R24f and Ce4f, respectively, and denoting the abundances of R2 and Ce occupying 4g site of the shell part 14 as R24g and Ce4g, respectively, the rare earth magnet satisfies 0.44≤R24g/(R24f+R24g)≤0.70 and 0.04≤(Ce4f+Ce4g)/(R24f+R24g). The rare earth magnet-producing method of the present disclosure uses a modifier containing at least R2 and Ce.-
公开(公告)号：US20190271261A1
公开(公告)日：2019-09-05
申请号：US16238794
申请日：2019-01-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Akira KATO
Abstract: An auxiliary chamber having an auxiliary fuel injector is formed on the top surface of a main combustion chamber. When making the air-fuel mixture inside the auxiliary chamber burn, the air-fuel mixture inside the main combustion chamber is burned by jet flames ejected from a communicating hole. After engine startup and until the elapse of a wall surface lower temperature period where the wall surface temperature of the auxiliary chamber becomes a lower temperature than the wall surface temperature of the auxiliary chamber at the time of completion of warmup, an injection ratio of an injection amount of liquid fuel from the auxiliary fuel injector to a fuel injection amount from a main fuel injector is made to decrease compared with after completion of warmup.
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公开(公告)号：US20220272847A1
公开(公告)日：2022-08-25
申请号：US17672067
申请日：2022-02-15
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Haruki KONDOH , Rentaro MORI , Keiji KURODA , Kazuaki OKAMOTO , Akira KATO , Jyunya MURAI , Hiroshi YANAGIMOTO , Kenji NAKAMURA , Tomoya OKAZAKI
Abstract: First, a patterned substrate including an insulating substrate, a conductive seed layer, and an insulating layer is prepared. The seed layer is disposed on the insulating substrate, and consists of a first part having a predetermined pattern corresponding to the wiring pattern and a second part as a part other than the first part. The insulating layer is disposed on the second part of the seed layer. Subsequently, a metal layer having a thickness larger than a thickness of the insulating layer is formed on the first part of the seed layer. Here, a voltage is applied between an anode and the seed layer while a resin film containing a metal ion-containing solution is disposed between the patterned substrate and the anode and the resin film and the seed layer are brought into pressure contact. Subsequently, the insulating layer and the second part of the seed layer are removed.
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公开(公告)号：US20210213530A1
公开(公告)日：2021-07-15
申请号：US17114593
申请日：2020-12-08
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Daiki KUBOYAMA , Akira KATO , Jyunya MURAI
Abstract: Composite particles sinterable at a low temperature and allow forming a sintered body that exhibits a large extension are provided. The composite particles include microparticles having an average crystallite diameter of 0.6 to 10 μm and containing a metal, and nanoparticles adhered to a surface of the microparticle, having an average crystallite diameter of 3 to 100 nm, and containing a metal of a same kind as the metal contained in the microparticle.
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公开(公告)号：US20200036322A1
公开(公告)日：2020-01-30
申请号：US16460100
申请日：2019-07-02
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Noritsugu SAKUMA , Masao YANO , Masaaki ITO , Tetsuya SHOJI , Hidefumi KISHIMOTO , Akira KATO
Abstract: To provide a motor control method ensuring that dragging loss at the time of high rotation can be reduced.A motor control method, wherein a composite permanent magnet has a core part and a shell part, the Curie temperature of one of the core part and the shell part is Tc1 K, and the Curie temperature of another is Tc2 K, and wherein when the magnitude of the reluctance torque is equal to or greater than the magnitude of the magnet torque, the temperature of the composite permanent magnet is set at Ts K that is (Tc1−100) K or higher and lower than Tc2 K and when the magnitude of the reluctance torque is less than the magnitude of the magnetic torque, the temperature of the composite permanent magnet is set at lower than the temperature Ts K or Tc1 K, whichever is lower.
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Patent Agency Ranking
公开(公告)号：US20170205326A1
公开(公告)日：2017-07-20
申请号：US15324026
申请日：2015-07-24
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Akira KATO , Go HAYASHITA
IPC: G01N15/06 , G01N27/409 , G01N27/406
CPC classification number: G01N15/0656 , G01N15/0606 , G01N27/4067 , G01N27/409 , G01N27/41
Abstract: An internal combustion engine includes an ECU, an A/F sensor being active at a first temperature lower than a PM combustion temperature and set in advance, and a heater to heat the A/F sensor to a second temperature equal to or higher than the PM combustion temperature and set in advance. The ECU detects PM based on a difference between an output value of the A/F sensor at the first temperature and an output value of the A/F sensor at the second temperature. The ECU may perform determining that a PM accumulation amount is smaller than a reference amount when the output value is higher than a threshold value, and that the PM accumulation amount is equal to or larger than the reference amount when the output value is a value equal to or smaller than the threshold value.
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公开(公告)号：US20170178772A1
公开(公告)日：2017-06-22
申请号：US15380079
申请日：2016-12-15
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Noritsugu SAKUMA , Akira KATO , Masao YANO , Shunji SUZUKI , Kurima KOBAYASHI
CPC classification number: H01F1/053 , C22C38/005 , C22C38/10 , C22C38/12 , C22C38/14 , H01F1/0557
Abstract: A rare earth magnet having a main phase and a sub-phase, wherein the main phase has a ThMn12-type crystal structure; the sub-phase contains at least any one of an Sm5Fe17-based phase, an SmCo5-based phase, an Sm2O3-based phase, and an Sm7Cu3-based phase; assuming that the volume of the rare earth magnet is 100%, the volume fraction of the sub-phase is from 2.3 to 9.5% and the volume fraction of an α-Fe phase is 9.0% or less; and the density of the rare earth magnet is 7.0 g/cm3 or more.
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公开(公告)号：US20240153680A1
公开(公告)日：2024-05-09
申请号：US18279529
申请日：2022-03-03
Applicant: AICHI STEEL CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Ryo SHIMBO , Masao YAMAZAKI , Noritsugu SAKUMA , Akihito KINOSHITA , Akira KATO , Tetsuya SHOJI
CPC classification number: H01F1/0571 , B22F1/142 , B22F1/145 , B22F9/023 , C22C38/002 , C22C38/005 , C22C38/12 , C22C38/16 , B22F2201/10 , B22F2201/20 , B22F2301/355 , B22F2998/10 , B22F2999/00 , C22C2202/02
Abstract: Provided is a rare-earth anisotropic magnet powder capable of achieving high magnetic properties while reducing the usage of Nd and Pr. The present invention provides a rare-earth anisotropic magnet powder comprising magnetic particles that contain rare-earth elements, boron, and a transition metal element. The rare-earth elements include a first rare-earth element that comprises Ce and/or La and a second rare-earth element that comprises Nd and/or Pr. The rare-earth elements have a first ratio (R1/Rt) of 5% to 57%. The first ratio (R1/Rt) is a ratio of an amount (R1) of the first rare-earth element to a total amount (Rt) of the rare-earth elements in terms of the number of atoms. The first rare-earth element has a La ratio (La/R1) of 0% to 35%. The La ratio (La/R1) is a ratio of an amount of La to the amount (R1) of the first rare-earth element in terms of the number of atoms. The magnetic particles have a Ga content of 0.35 at % or less with respect to 100 at % as a whole. By adjusting the Ga content to a predetermined value or less, both the reduction of Nd (Pr) and the high magnetic properties can be achieved at a high level.
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公开(公告)号：US20170084370A1
公开(公告)日：2017-03-23
申请号：US15233362
申请日：2016-08-10
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Noritsugu SAKUMA , Masao YANO , Akira KATO , Akira MANABE , Shunji SUZUKI , Kurima KOBAYASHI
CPC classification number: H01F1/0557 , C22C38/005 , C22C38/10 , C22C38/14
Abstract: A magnetic compound represented by the formula (R1(1-x)R2x)a(Fe(1-y)Coy)bTcMd wherein R1 is one or more elements selected from the group consisting of Sm, Pm, Er, Tm and Yb, R2 is one or more elements selected from the group consisting of Zr, La, Ce, Pr, Nd, Eu, Gd, Tb, Dy, Ho and Lu, T is one or more elements selected from the group consisting of Ti, V, Mo, Si and W, M is one or more elements selected from the group consisting of unavoidable impurity elements, Al, Cr, Cu, Ga, Ag and Au, 0≦x≦0.7, 0≦y≦0.7, 4≦a≦20, b=100-a-c-d, 0
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公开(公告)号：US20160311431A1
公开(公告)日：2016-10-27
申请号：US15134772
申请日：2016-04-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Akira KATO
IPC: B60W30/165 , G05D1/00
CPC classification number: B60W30/165 , B60W30/095 , B60W30/0956 , B60W2550/22 , B62D1/28 , G01C21/3617 , G05D1/0088 , G05D2201/0213
Abstract: An autonomous driving vehicle system includes a travel plan generation unit configured to generate a travel plan and a control width of a target control value, a travel control unit configured to calculate an instruction control value, and a behavior determination unit configured to determine whether or not a behavior change which is opposite to the most recent behavior change is performed. In a case where it is determined that the opposite behavior change is performed, the travel control unit is configured to calculate the instruction control value such that a behavior change amount of the most recent behavior change is smaller and becomes in the restricted vehicle state corresponding to the state within the control width compared to the case where the current vehicle state is caused to follow the target vehicle state when it is determined that the opposite behavior change is not performed.
Abstract translation: 自动驾驶车辆系统包括：行驶计划生成单元，被配置为生成行驶计划和目标控制值的控制宽度;行驶控制单元，被配置为计算指令控制值;以及行为确定单元，被配置为确定是否 执行与最近的行为改变相反的行为改变。 在确定执行相反行为改变的情况下，行驶控制单元被配置为计算指示控制值，使得最近行为改变的行为改变量变小，并且变成对应于 当判定为不执行相反的行为改变时，使当前车辆状态跟随目标车辆状态的情况下的控制宽度内的状态。
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