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公开(公告)号：US20230358313A1
公开(公告)日：2023-11-09
申请号：US18026144
申请日：2021-07-30
Applicant: TPR Co., Ltd.
Inventor： Hiroyuki Nagakura , Shuichi Inamori , Akira Hikone
Abstract: A combination of piston rings assembled to a piston includes a first compression ring, a second compression ring, a third compression ring and an oil ring. When an axial width of the first compression ring is h1(1), an axial width of the second compression ring is h1(2), an axial width of the third compression ring is h1(3) and an axial width of the oil ring is h1(4), h1(1)≥h1(2) and h1(1)≥h1(3), and when h1(TOTAL)=h1(1)+h1(2)+h1(3)+h1(4), h1(TOTAL)≥3.1 mm.
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公开(公告)号：US20230193847A1
公开(公告)日：2023-06-22
申请号：US17926715
申请日：2020-06-11
Applicant: TPR Co., Ltd. , TPR Industry Co., Ltd.
Inventor： Seiji Tamaki , Takashi Oizumi
Abstract: Provided is a cylinder liner which can reduce the friction of the sliding surface from conventional levels and improve fuel efficiency without increasing oil consumption from conventional levels.
When the inner circumferential surface of a cylinder liner or cylinder bore used in an internal combustion engine has a first sliding region, a second sliding region, and a third sliding region, and when respective surface roughness Rvk is from 0.05 μm to 0.3 μm, from 0.4 μm to 1.5 μm, and from 0.15 μm to 0.7 μm, a friction can be reduced while maintaining oil consumption.-
公开(公告)号：US20230127085A1
公开(公告)日：2023-04-27
申请号：US17922613
申请日：2021-04-27
Applicant: TPR Co., Ltd.
Inventor： Fumiya Ito , Shohtaroh Hara
Abstract: The present invention addresses the problem of providing a sintered alloy valve guide capable of inhibiting valve adhesion even in a high-temperature environment. The problem can be solved by a sintered alloy valve guide impregnated with a lubricating oil including pores that are sealed on the valve guide outer circumferential surface. More particularly, the problem is solved by the sealing step of performing a sealing treatment of pores on the outer circumferential surface of a sintered body impregnated with a lubricating oil.
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公开(公告)号：US20220372929A1
公开(公告)日：2022-11-24
申请号：US17770749
申请日：2019-11-06
Applicant: TPR Co., Ltd. , TPR Industry Co., Ltd.
Inventor： Masayuki Ohira , Naoki Umeda , Seiji Tamaki , Takashi Sato , Takashi Oizumi
IPC: F02F1/00
Abstract: The present invention addresses the problem of providing a cylinder liner or a cylinder bore, which can reduce not only friction on a sliding surface but also oil consumption. In a piston sliding direction of the cylinder bore, grooves of a second sliding region positioned on the side of crankcase have a higher groove area ratio at a depth of 0.3 μm than grooves of a first sliding region positioned on the side of combustion chamber, and the groove area ratio is in a specific range, whereby friction and oil consumption can be reduced.
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公开(公告)号：US20220145990A1
公开(公告)日：2022-05-12
申请号：US17608176
申请日：2020-12-17
Applicant: TPR Co., Ltd.
Inventor： Atsushi Nakazawa , Satoshi Minemura , Masahide Hama
Abstract: In a surface of a wire, a first side surface forming an outer circumferential surface in a piston ring includes a tapered surface and a protruding surface, the protruding surface is divided into a first part and a second part by a first virtual surface extending from the tapered surface, and the first part includes a top and is formed in a protruding shape.
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Patent Agency Ranking
公开(公告)号：US11047333B2
公开(公告)日：2021-06-29
申请号：US16546437
申请日：2019-08-21
Applicant: TPR Co., Ltd. , TPR Industry Co., Ltd.
Inventor： Akira Sato , Koichi Hatakeyama
Abstract: A cylinder liner that is casted in a block and defines a cylinder bore for one cylinder includes: a cylindrical liner body; a projection part including a plurality of projections on an outer peripheral surface of a part of the liner body; and a bore adjacent part inclined at a predetermined angle to an axial direction of the body and extending in the inclination direction, at a predetermined part between an upper side end and a lower side end of the body, of the outer peripheral surface of the body, which faces another cylinder bore to be adjacent when casted in the block. The outer peripheral surface of the bore adjacent part is positioned more on an inner side of the body than the outer peripheral surface above and below, and is formed such that the projections are absent on at least a part of the outer peripheral surface.
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公开(公告)号：US20210164568A1
公开(公告)日：2021-06-03
申请号：US17265895
申请日：2019-10-28
Applicant: TPR Co., Ltd.
Inventor： Tetsuya Nango
Abstract: In this piston ring combination, a second outer peripheral surface, which is the outer peripheral surface of a second ring, has a second protruding surface curved into a convex shape, and a pair of third outer peripheral surfaces, which are the outer peripheral surfaces of a pair of segments, each have a third outer peripheral area in which a third protruding surface is formed, the third protruding surfaces being curved into convex shapes. In at least one of the pair of third outer peripheral surfaces, the peripheral edge on a crank-chamber side is positioned farther outward in the diametrical direction than the peripheral edge on a combustion-chamber side, and a peak of the third protruding surface is positioned nearer to the crank chamber than the center of the third outer peripheral surface.
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公开(公告)号：US10596624B2
公开(公告)日：2020-03-24
申请号：US16090123
申请日：2017-11-17
Applicant: TPR CO., LTD. , TPR INDUSTRY CO., LTD.
Inventor： Akira Sayama , Koichi Hatakeyama , Akira Sato , Kazuki Seino , Katsuya Okuda , Tomoki Takiguchi
Abstract: Provided is a cast-iron cylindrical member having projections (P) formed integrally with a casted surface (an outer peripheral surface), and a composite structure including the cast-iron cylindrical member and an outer periphery-side member. The cast-iron cylindrical member satisfies: (A) 0.50 mm>a height (H) of the projections (P)≥0.20 mm; (B) 180≥a total number (N) of the projections (P) per cm2 of the outer peripheral surface≥61; (C) the projections (P) include a projection (Pn) having a constricted shape; (D) a ratio (NP) of the projections (Pn) to the projections (P)≥50%; (E) a bonding strength index (S) expressed by: S=H2×N×NP is equal to or larger than 310; and (F1) a bonding strength F(Al) obtained when the outer peripheral surface of the cast-iron cylindrical member is cast-in inserted with an aluminum alloy exceeds a boundary bonding strength (Fb) expressed by: Fb=1.325×H2×N−0.75.
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公开(公告)号：US10510493B2
公开(公告)日：2019-12-17
申请号：US16074878
申请日：2017-02-03
Applicant: TPR CO., LTD. , NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Naoya Kobayashi , Yusuke Yamauchi , Rahul Salunkhe , Jing Tang
IPC: H01B1/04 , H01G11/24 , H01B1/12 , H01G11/42 , H01G11/48 , H01G11/86 , H01M4/36 , H01M4/38 , H01M4/60 , H01G11/36 , H01G11/38
Abstract: This core-shell composite (10) is provided with a core (11) formed from a porous carbon body having a large number of pores from the interior through to the surface, and a shell layer (12) formed from conductive polymer nanorods (12a) that extend outward from the cavities of the pores (11a) on the surface of the core. The present invention provides the core-shell composite (10), to which electrolyte ions can be efficiently adsorbed or doped, a method for producing the core-shell composite, as well as an electrode material, a catalyst, an electrode, a secondary battery and an electric double-layer capacitor that use the core-shell composite.
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100.发明申请公开(公告)号：US20190277220A1
公开(公告)日：2019-09-12
申请号：US16319248
申请日：2017-03-27
Applicant: TPR CO., LTD. , TPR INDUSTRY CO., LTD.
Inventor： Masami HORIGOME , Akira SATO , Takashi OIZUMI , Takashi INOUE , Akira HIKONE
Abstract: Provided are a method of manufacturing an engine, an engine, and a connected cylinder. The method of manufacturing an engine includes at least a fitting step of fitting a connected cylinder to a hollow portion of a cylinder block main body. The connected cylinder is (1) a first connected cylinder including two or more cylinder liners and a connecting portion configured to connect the two or more cylinder liners to each other or (2) a second connected cylinder including a connected cylinder main body portion having two or more cylinder bores and a coating configured to cover an inner peripheral surface of the connected cylinder main body portion in which the cylinder bores are formed. The cylinder block main body has one end side, another end side, and the hollow portion passing through the cylinder block main body from the one end side to the another end side.
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