公开(公告)号：US10578200B2

公开(公告)日：2020-03-03

申请号：US15504394

申请日：2015-06-12

Applicant: NISSAN MOTOR CO., LTD. ,  AICHI MACHINE INDUSTRY CO., LTD.

Inventor： Takemichi Yamashita ,  Yutaka Mabuchi ,  Takeshi Kariya ,  Takao Mori ,  Tadashi Goto ,  Hiroyasu Nagami

IPC: F16H55/17 ,  F16H1/08 ,  F16H55/06

Abstract: A gear pair includes a first gear and a second gear that are engaged and paired with each other, wherein the arithmetic average roughness Ra of the tooth surface of the first gear is less than 0.10, and the arithmetic average roughness Ra of the tooth surface of the second gear is equal to or greater than 0.15. An improvement of the transmission efficiency is achieved due to the improved composite roughness of the gear pair. Accordingly, both of the improvement of the transmission efficiency of the gears and an improvement of the pitting fatigue life are achieved at low cost.

公开(公告)号：US10451184B2

公开(公告)日：2019-10-22

申请号：US15672849

申请日：2017-08-09

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Tsuyoshi Higuchi ,  Yutaka Mabuchi ,  Hideaki Kamiyama ,  Katsuaki Ogawa

IPC: C23C28/04 ,  F16J9/26 ,  C25D5/50 ,  C25D7/10 ,  C23C28/00 ,  C23C16/27 ,  C25D3/04 ,  F16J9/28

Abstract: A sliding member includes: a base; a chromium-based hard chromium plated layer formed on the surface of the base; a hard carbon layer that is mainly composed of carbon element and is formed on the hard chromium plated layer. The hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm.A method for producing the sliding member involves heating the surface of the base on which the chromium-based hard chromium plated layer has been formed at a temperature of 250° C. or more so that the hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm, and thereafter forming the hard carbon layer mainly composed of carbon element on the hard chromium plated layer.

公开(公告)号：US20150072906A1

公开(公告)日：2015-03-12

申请号：US14389901

申请日：2013-03-29

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Makoto Hayama ,  Terasu Yoshinari ,  Masanori Komaba ,  Yutaka Mabuchi ,  Yoshiteru Yasuda ,  Saburo Abe ,  Katsuyuki Serizawa ,  Tsuyoshi Higuchi

IPC: C10M169/02

CPC classification number: C10M169/02 ,  C10M2203/1006 ,  C10M2205/0285 ,  C10M2207/0406 ,  C10M2207/1285 ,  C10M2207/2825 ,  C10M2209/1033 ,  C10N2220/022 ,  C10N2230/06 ,  C10N2240/02 ,  C10N2250/10 ,  C10N2280/00 ,  C10N2210/01

Abstract: A sliding mechanism includes first and second members slidable relative to each other and a grease composition interposed between the first and second members and containing a thickening agent and a base oil, wherein the grease composition contains lithium 12-hydroxystearate as the thickening agent and dioctyl sebacate and/or poly-α-olefin as the base oil; and wherein at least one of the first and second member has a sliding surface coated with a hard carbon film of diamond-like carbon.

Abstract translation: 滑动机构包括相对于彼此可滑动的第一和第二构件以及介于第一和第二构件之间并含有增稠剂和基础油的润滑脂组合物，其中润滑脂组合物含有12-羟基硬脂酸锂作为增稠剂和癸二酸二辛酯 和/或聚-α-烯烃作为基础油; 并且其中所述第一和第二构件中的至少一个具有涂覆有类金刚石碳的硬质碳膜的滑动表面。

公开(公告)号：US11231067B2

公开(公告)日：2022-01-25

申请号：US17052848

申请日：2018-05-10

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Hayato Hirayama ,  Yutaka Mabuchi ,  Tsuyoshi Higuchi ,  Takemichi Yamashita

IPC: F16C17/02 ,  F16C33/12 ,  F16C33/20

Abstract: A bearing member 1 is provided with a coating layer 3 on an inner circumferential surface of a shaft hole 1A into which a shaft body 2 is to be fitted. The coating layer 3 is composed of a metal base material 3A and a heat conductive material 3B that is dispersed in the base material 3A and that has a thermal conductivity relatively higher than that of the base material 3A. The heat conductive material 3B has lengths Lb and Lc in directions B and C along a surface of the coating layer 3, longer than a length La in a thickness direction A of the coating layer 3, whereby thermal conductive characteristics in the directions B and C along the inner circumferential surface of the shaft hole 1A are enhanced. Thus, heat dissipation is improved, whereby temperature rise due to sliding contact with the shaft body 2 is suppressed, and seizure resistance is improved.

公开(公告)号：US11193537B2

公开(公告)日：2021-12-07

申请号：US16980000

申请日：2018-03-12

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Hayato Hirayama ,  Takemichi Yamashita ,  Tsuyoshi Higuchi ,  Yutaka Mabuchi

IPC: F16C33/24 ,  F16C17/02 ,  F16C33/20

Abstract: A bearing member (B1) having a coating layer (1) on an internal circumferential surface of a shaft hole (H) configured to mount a shaft body (P1), the coating layer (1) having a metal layer (2) whose surface is formed unevenly, and a resin layer (3) formed on the metal layer (2), the metal layer (2) having a part thereof exposed (2A) on a surface of the resin layer (3), to inhibit the increase in temperature caused by sliding contact with the shaft body (P1), and accomplishing improvement in seizure resistance.

公开(公告)号：US10941727B2

公开(公告)日：2021-03-09

申请号：US16493841

申请日：2017-04-04

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Takuma Suzuki ,  Yutaka Mabuchi ,  Yuka Suzuki

IPC: F02F3/00 ,  F02F3/14 ,  F02F3/24 ,  F16J1/09 ,  F02F3/04

Abstract: In a piston of an internal combustion engine in which a recessed portion that holds an intake air swirling flow is formed on a crown surface of the piston, the crown surface includes a heat insulating film formation portion having a heat insulating film whose thermal conductivity is lower than a base material of the piston, the heat insulating film whose thermal capacity per volume is smaller than the base material of the piston, and a heat insulating film non-formation portion provided at a position on the more outside of a cylinder bore side of the internal combustion engine than the heat insulating film formation portion, the heat insulating film non-formation portion not having the heat insulating film.

公开(公告)号：US09759323B2

公开(公告)日：2017-09-12

申请号：US14763011

申请日：2013-12-20

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Tsuyoshi Higuchi ,  Yutaka Mabuchi ,  Hideaki Kamiyama ,  Katsuaki Ogawa

IPC: F16J9/00 ,  F16J9/26 ,  C25D5/50 ,  C25D7/10 ,  C23C28/00 ,  C23C16/27 ,  C25D3/04 ,  F16J9/28

CPC classification number: F16J9/26 ,  C23C16/27 ,  C23C28/32 ,  C23C28/322 ,  C23C28/343 ,  C23C28/347 ,  C25D3/04 ,  C25D5/50 ,  C25D7/10 ,  F16J9/28

Abstract: A sliding member includes: a base; a chromium-based hard chromium plated layer formed on the surface of the base; a hard carbon layer that is mainly composed of carbon element and is formed on the hard chromium plated layer. The hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm. A method for producing the sliding member involves heating the surface of the base on which the chromium-based hard chromium plated layer has been formed at a temperature of 250° C. or more so that the hydrogen concentration of the hard chromium plated layer is equal to or less than 150 mass ppm, and thereafter forming the hard carbon layer mainly composed of carbon element on the hard chromium plated layer.

公开(公告)号：US12151982B2

公开(公告)日：2024-11-26

申请号：US18232174

申请日：2023-08-09

Applicant: Nissan Motor Co., Ltd.

Inventor： Yuka Suzuki ,  Yutaka Mabuchi

IPC: C04B38/00 ,  C04B35/48 ,  C04B35/581 ,  C04B38/06 ,  C23C28/04 ,  F02B77/11

Abstract: A manufacturing method of a heat shield component includes a mixing step of mixing sol including a ceramic precursor with heat-expandable microspheres having an outer shell formed of thermoplastic resin and encapsulating a foaming agent so as to obtain a mixed solution, a coating step of applying the mixed solution to a substrate to obtain a coated product, and a heating step of heating the coated product to form a base body including a ceramic from the ceramic precursor, and leading the heat-expandable microspheres to foam so as to form a ceramic porous layer including closed pores in the base body. The ceramic porous layer has a porosity in a range of 40% to 70%.

公开(公告)号：US11926900B2

公开(公告)日：2024-03-12

申请号：US17337866

申请日：2021-06-03

Applicant: NISSAN MOTOR CO., LTD. ,  FUKUDA METAL FOIL & POWDER CO., LTD.

Inventor： Yoshinori Izawa ,  Junichi Arai ,  Yutaka Mabuchi ,  Katsunori Otobe ,  Shinichi Nishimura

IPC: C23C24/04 ,  B22F1/00 ,  B22F1/12 ,  B22F7/04 ,  B22F9/08 ,  B32B15/20 ,  C22C1/04 ,  C22C9/06 ,  C22C9/10

CPC classification number: C23C24/04 ,  B22F1/09 ,  B22F1/12 ,  B22F7/04 ,  B22F9/08 ,  B32B15/20 ,  C22C1/04 ,  C22C9/06 ,  C22C9/10

Abstract: A laminate includes a base substrate, and a coating layer formed on the base substrate. The coating layer includes a copper alloy portions derived from precipitation-hardening copper alloy particles and hard particle portions which are harder than the copper alloy portions, the hard particle portions are derived from hard particles, and the parts bond with each other via an interface. Each of the hard particle portions has a non-spherical shape.
A sliding member includes the laminate in at least one sliding portion.
A method for manufacturing a laminate includes a step of spraying a mixture in a non-molten state including precipitation-hardening copper alloy particles and hard particles having a non-spherical shape and being harder than the copper alloy particles onto a base substrate, to form a coating layer on the base substrate.

公开(公告)号：US11433637B2

公开(公告)日：2022-09-06

申请号：US16638684

申请日：2017-08-14

Applicant: Nissan Motor Co., Ltd.

Inventor： Yuka Suzuki ,  Yutaka Mabuchi ,  Takuma Suzuki ,  Ken Tsutsuji

IPC: B32B3/00 ,  B32B15/088 ,  B32B15/20 ,  C23C28/04 ,  F02F1/00 ,  B32B15/08

Abstract: A heat shield component includes a substrate, and a heat shield film arranged on the substrate. The heat shield film includes a first layer arranged on the substrate, including pores, and having a thermal conductivity of 0.3 W/(m·K) or less and a volumetric specific heat of 1200 kJ/(m3·K) or less, and a second layer arranged on the first layer to provide closed pores between the first layer and the second layer. The heat shield film has a surface roughness on a top surface which is 1.5 μm Ra or less. The heat shield component can achieve high heat-insulating properties and an improved effect of reducing the emission amount of hydrocarbon in an internal combustion engine, for example.