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公开(公告)号：US20170209915A1
公开(公告)日：2017-07-27
申请号：US15363007
申请日：2016-11-29
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki IGUMA , Akio KAWAGUCHI , Hideo YAMASHITA , Kazuaki NISHIO
CPC classification number: B21K3/02 , C23C4/01 , C23C4/10 , F02B77/00 , F02F1/24 , F02F1/42 , F02F1/4285 , F02F2200/06
Abstract: A manufacturing method for a cylinder head is described. A masking member is attached to cylinder head material, which followed by a film formation step. The masking member comprises a mask portion to mask the matching surface with the cylinder block, and mask portions to mask each of the openings of the intake ports, the exhaust ports, and the CPS hole. Mask portions are linked directly to other mask portions without any steps.
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公开(公告)号：US20170152795A1
公开(公告)日：2017-06-01
申请号：US15358803
申请日：2016-11-22
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hideo YAMASHITA , Akio KAWAGUCHI , Hiroki IGUMA
CPC classification number: F02B77/11 , F02B77/085 , F02F3/10 , F02F11/002 , F05C2251/048
Abstract: A heat shield film is formed on a bottom surface of a cylinder head and a heat shield film is formed on an inner peripheral surface of a small diameter hole portion. The film is a thermal spraying film made from the same film material. Since the film is thicker than the film, the film has higher thermal capacity than the film and thus heat retaining effect of the film is higher than that of the film. Therefore, combustion gas generated in a combustion chamber is suppressed to lose its momentum around the portion. Even if the combustion gas goes off around the portion, excessive temperature decrease of the combustion gas in the portion is suppressed.
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公开(公告)号：US20160273484A1
公开(公告)日：2016-09-22
申请号：US15034209
申请日：2014-09-12
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Manabu TATENO , Akio KAWAGUCHI , Hideyuki NISHIDA , Hideo YAMASHITA , Hiroki IGUMA , Akira YAMASHITA , Kazuyasu IWATA
CPC classification number: F02F3/14 , C25D11/022 , C25D11/04 , F02B77/11 , F02F3/12 , F02F3/26 , F05C2251/048
Abstract: The present invention relates to an internal combustion engine. An object of the invention is to allow an effect produced by are anodic oxide film to be exerted while suppressing a decrease in the combustion rate. A piston 10 includes a cavity portion 20 and a tapered portion 26 that is formed so as to surround the cavity portion 20 on an outer side thereof. The diameter of the tapered portion 26 decreases progressively in the downward direction from the top face side of the piston. A squish portion 28 is formed on an outer side of the tapered portion 26. An anodic oxide film 30 is formed on a surface (tapered face) of the tapered portion 26 and a surface (squish face) of the squish portion 28. The anodic oxide film 30 is not formed on the surface (cavity face) of the cavity portion 20.
Abstract translation: 内燃机技术领域本发明涉及内燃机。 本发明的一个目的是通过抑制燃烧速度的降低来产生作为阳极氧化膜的效果。 活塞10包括空腔部分20和形成为在其外侧围绕空腔部分20的锥形部分26。 锥形部26的直径从活塞的顶面侧向下方逐渐减小。 挤压部分28形成在锥形部分26的外侧上。阳极氧化膜30形成在锥形部分26的表面（锥形面）和挤压部分28的表面（挤压面）上。阳极氧化膜30 氧化膜30不形成在空腔部20的表面（空腔面）上。
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公开(公告)号：US20210221215A1
公开(公告)日：2021-07-22
申请号：US17116161
申请日：2020-12-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki IGUMA , Tomohito ONO , Hiroto HASHIMOTO , Daisuke SHIRAI
Abstract: A powertrain system includes an internal combustion engine, a motor generator and a control device. The motor generator includes a rotating shaft connected to a crankshaft of the internal combustion engine via a torsional damper. The powertrain system is configured such that the crankshaft and the above-described rotating shaft are not connected to a drive shaft of a vehicle at least at the time of engine start. The control device is configured to execute a cranking torque amplification control that controls the motor generator such that the MG torque output from the motor generator for cranking the internal combustion engine fluctuates in a resonant period of the torsional damper while making a fluctuation center of the MG torque higher than zero.
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公开(公告)号：US20180106212A1
公开(公告)日：2018-04-19
申请号：US15726910
申请日：2017-10-06
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki IGUMA
CPC classification number: F02F1/24 , B23C3/055 , B23D79/04 , B23P6/02 , B23P13/02 , B23P15/00 , B23Q17/20 , F02F2001/244 , F02F2001/249 , F02F2200/06 , G05D5/02
Abstract: A manufacturing method for an engine includes: preparing, as a preparing step, a cylinder head having a surface on which a ceiling surface of a combustion chamber is formed; forming, as a film formation step, a thermal insulation film on the ceiling surface; measuring, as a measurement step, a volume of the thermal insulation film; and selecting, as a selection step, a rank for an engine valve to be used in combination with the ceiling surface so as to correspond to an amount of difference of a measured volume of the thermal insulation film from a designed value of a volume of the thermal insulation film, the rank being selected from a plurality of ranks set in correspondence with thicknesses of umbrella portions of engine valves.
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Patent Agency Ranking
公开(公告)号：US20180106211A1
公开(公告)日：2018-04-19
申请号：US15723439
申请日：2017-10-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki IGUMA
IPC: F02F1/24
CPC classification number: F02F1/24 , F02F2200/00
Abstract: A method for manufacturing an engine includes: preparing, as a preparing step, a cylinder head having a surface on which a ceiling surface of a combustion chamber is formed; forming, as a film formation step, a thermal insulation film on the ceiling surface; measuring, as a measurement step, a volume of the thermal insulation film; and selecting, as a selection step, from a plurality of ranks set in correspondence with compression heights of pistons, the rank of the piston to be combined with the ceiling surface, the selected rank corresponding to an amount of difference of the measured volume of the thermal insulation film from a design value of the volume of the thermal insulation film.
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公开(公告)号：US20170121839A1
公开(公告)日：2017-05-04
申请号：US15249871
申请日：2016-08-29
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hideo YAMASHITA , Akio KAWAGUCHI , Hiroki IGUMA
CPC classification number: C25D11/246 , C25D11/18 , F02F3/0084 , F02F3/14 , F02F2200/00 , F05C2253/12
Abstract: A method for manufacturing a piston for an internal combustion engine, a base material of the piston being an aluminum alloy, a cavity being formed in a top surface of the piston, includes a depositing step of depositing a porous anodic oxide coating on a portion of a surface of the base material, the portion corresponding to a wall surface of the cavity, a reinforcing step of reinforcing the anodic oxide coating deposited by the depositing step, a polishing step of forming a smoothed surface of the anodic oxide coating by polishing the anodic oxide coating reinforced by the reinforcing step, and a sealing step of applying a sealant on the smoothed surface of the anodic oxide coating formed by the polishing step.
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公开(公告)号：US20240262207A1
公开(公告)日：2024-08-08
申请号：US18538024
申请日：2023-12-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki IGUMA , Akira Hibino
IPC: B60L3/00
CPC classification number: B60L3/0023 , B60L2240/421 , B60L2240/423
Abstract: A driving force control device in which, based on the rotational speed of the motor mounted on the vehicle, it is determined whether resonance occurs in the vehicle with respect to the road, and when it is determined that resonance occurs in the vehicle, the torque of the motor is limited. Only the fluctuation component of the rotation speed is extracted from the rotation speed of the motor with a band-pass filter. When limiting the torque of the motor, the torque reduction is started at the timing of 270 degrees in the phase of the waveform which regards the extracted fluctuation component as the COS waveform.
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公开(公告)号：US20180252179A1
公开(公告)日：2018-09-06
申请号：US15860918
申请日：2018-01-03
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki IGUMA
IPC: F02F1/24
CPC classification number: F02F1/24 , B23P13/02 , F02B77/11 , F02F2200/00 , F02F2200/06 , F16J10/02
Abstract: A cylinder head material of an engine is casted (Step S1). Next, the cylinder head material is machined (Step S2). Next, a heat shielding film is formed on a ceiling surface of the cylinder head material (Step S3). Next, the film thickness of the heat shielding film is measured (Step S4). Next, a rank of a piston to be combined with the ceiling surface is selected (Step S5). The rank of the piston selected in Step S5 is a rank according to depth of a cavity. Next, the rank of the piston selected in Step S5 is stamped on the cylinder head (Step S6).
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公开(公告)号：US20170209916A1
公开(公告)日：2017-07-27
申请号：US15364882
申请日：2016-11-30
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki IGUMA , Akio KAWAGUCHI , Hideo YAMASHITA , Kazuaki NISHIO
CPC classification number: B21K3/02 , F02F1/24 , F02F2001/249 , F02F2200/00
Abstract: The masking member comprises a matching surface mask portion to mask the matching surface with the cylinder block, port hole mask portions to mask openings of the intake ports and the exhaust ports, and a between openings mask portion to mask a region which is sandwiched between the openings of two adjacent port holes. The matching surface mask portion is linked directly to the port hole mask portions without any steps, and the between openings mask portion is linked directly to both of the port hole mask portions without a step.
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