公开(公告)号：US09790447B2

公开(公告)日：2017-10-17

申请号：US14796081

申请日：2015-07-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki Mori ,  Mamoru Tohyama ,  Masaru Okuyama ,  Keiji Hayashi ,  Naoya Ikeda

IPC: C10M103/04 ,  C10M103/06 ,  C10M125/22 ,  C10M113/08

CPC classification number: C10M103/04 ,  C10M103/06 ,  C10M113/08 ,  C10M2201/066 ,  C10N2210/06 ,  C10N2230/06 ,  C10N2230/42 ,  C10N2230/43 ,  C10N2240/10 ,  C10N2280/00

Abstract: [Technical Problem]An object is to provide a sliding system which can drastically reduce the friction coefficient on a sliding portion by means of a novel combination of a chromium nitride film and a lubricant oil.[Solution to Problem]The sliding system according to the present invention includes: a pair of sliding members having sliding surfaces that can relatively move while facing each other; and a lubricant oil that can be interposed between the sliding surfaces facing each other. At least one of the sliding surfaces is formed as a coating surface of a chromium nitride film, and the lubricant oil contains an oil-soluble molybdenum compound that has a chemical structure of a trinuclear of Mo. When the chromium nitride film as a whole is 100 at % (referred simply to as “%”), the chromium nitride film contains 40-65% of Cr and 35-55% of N, and the chromium nitride film has a relative surface area of 15-60% wherein the relative surface area is a surface area ratio of (111) plane to (200) plane obtained when analyzed using X-ray diffraction. The lubricant oil preferably contains 5-800 ppm of the oil-soluble molybdenum compound in a content mass of Mo to the lubricant oil as a whole.

公开(公告)号：US20150083655A1

公开(公告)日：2015-03-26

申请号：US14398306

申请日：2013-04-30

Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO

Inventor： Hideto Morishita ,  Yasuhiro Saito ,  Ippei Fukutomi ,  Motoichi Murakami ,  Katsuichi Miyasaka ,  Yasuhiro Ohmiya ,  Hiroshi Moritani ,  Mamoru Tohyama ,  Narihito Tatsuda

IPC: B01D15/10 ,  B01D35/00

CPC classification number: B01D15/10 ,  B01D27/08 ,  B01D29/54 ,  B01D35/005 ,  B01D37/025 ,  B01D2201/303 ,  B01D2253/10 ,  B01D2253/106 ,  B01D2253/11 ,  B01D2253/1124 ,  B01J20/041 ,  B01J20/06 ,  B01J20/08 ,  B01J20/103 ,  B01J20/28057 ,  B01J20/28069 ,  B01J20/28078 ,  B01J20/2808 ,  B01J20/28083 ,  C10G25/003 ,  C10G53/00 ,  C10G53/08 ,  C10G53/16 ,  C10G2300/1007 ,  C10G2300/202 ,  C10G2400/10 ,  C10M175/0058 ,  C10M175/0091 ,  C10M2201/062 ,  F01M1/10 ,  F01M2001/1014

Abstract: Provided is an oil deterioration prevention device with which the trapping effect with respect to oil deteriorated components can be improved and with which the oil passage resistance can be reduced, thereby suppressing a rise in pressure loss. This oil deterioration prevention device is equipped with a filter unit equipped with a filter material that filters oil; and a deterioration prevention unit equipped with a powdery deterioration suppressing agent that suppresses oil deterioration. The deterioration prevention unit contains a mesoporous inorganic material, and of the oil fed from an oil storage unit, the oil filtered by the filter unit is fed to parts which are to be lubricated, and the oil in which deterioration has been suppressed by the deterioration prevention unit is returned to the oil storage unit or is fed to the parts to be lubricated.

Abstract translation: 本发明提供一种油劣化防止装置，能够提高油劣化成分的捕集效果，能够降低油通路阻力，从而抑制压力损失的上升。 该油劣化防止装置配备有过滤器单元，该过滤单元配备有过滤油的过滤材料; 以及配备有抑制油劣化的粉末劣化抑制剂的劣化防止单元。 劣化防止单元包含介孔无机材料，并且从储油单元供给的油，由过滤器单元过滤的油被供给到要润滑的部分，并且由于劣化而被抑制了劣化的油 预防单元返回到储油单元或被供给到要润滑的部件。

公开(公告)号：US10030207B2

公开(公告)日：2018-07-24

申请号：US14795388

申请日：2015-07-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO

Inventor： Hiroyuki Mori ,  Mamoru Tohyama ,  Masaru Okuyama ,  Keiji Hayashi ,  Naoya Ikeda

IPC: C10M125/22

Abstract: A sliding machine includes: a pair of sliding members having sliding surfaces that oppose each other and are able to move relative to each other; and a lubricating oil which is able to be interposed between the opposed sliding surfaces, in which at least one of the sliding surfaces is covered with a chromium (Cr)-containing amorphous carbon film (chromium-coating DLC), and the lubricating oil contains an oil-soluble molybdenum compound having a chemical structure formed from a trinuclear material of molybdenum (Mo). Specifically, the chromium-coating DLC contains, when the entirety of the film is assumed to be 100 at. %, 1% to 49% of Cr, 0% to 30% of hydrogen (H), carbon (C) as a remainder, and impurities. The lubricating oil contains 5 ppm to 800 ppm of the oil-soluble molybdenum compound in terms of Mo mass ratio with respect to the entirety of the lubricating oil.

公开(公告)号：US09624975B2

公开(公告)日：2017-04-18

申请号：US14644942

申请日：2015-03-11

Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masaru Okuyama ,  Mamoru Tohyama ,  Hiroyuki Mori ,  Munehisa Matsui ,  Naoya Ikeda ,  Yoshio Fuwa ,  Takatoshi Shinyoshi

IPC: F16C33/04

CPC classification number: F16C33/043 ,  F16C2206/58

Abstract: The sliding member according to the present invention includes: a base material; and a sliding film that covers a surface of the base material and constitutes a sliding surface, and is used under a wet condition where lubricant oil exists. The sliding film according to the present invention is a laminated film that includes: an underlying layer formed on the surface of the base material; and an outermost layer formed at least on a part of the underlying layer. This outermost layer is characterized by including specific boron-containing amorphous carbon (specific B-DLC) that contains 4-50% B and 5-50% H when the outermost layer as a whole is 100 at %. This specific B-DLC itself wears away during the sliding to smooth the sliding surface, and an excellent low friction property is exhibited. The underlying layer of the specific B-DLC contributes to improvement in the wear resistance property of the sliding film.

公开(公告)号：US10301568B2

公开(公告)日：2019-05-28

申请号：US15417452

申请日：2017-01-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki Mori ,  Mamoru Tohyama ,  Masaru Okuyama ,  Keiji Hayashi ,  Naoya Ikeda

IPC: C10M125/08 ,  C10M125/22 ,  C10M135/18

Abstract: [Technical Problem]An object is to provide a sliding system which can achieve both the reduced friction and the enhanced wear resistance by means of a novel combination of a sliding film and a lubricant oil.[Solution to Problem]The sliding system of the present invention comprises: a pair of sliding members having sliding surfaces that can relatively move while facing each other; and a lubricant oil interposed between the sliding surfaces facing each other. At least one of the sliding surfaces comprises a coating surface of a crystalline chromium carbide film. The lubricant oil contains an oil-soluble molybdenum compound that has a chemical structure of a trinuclear of Mo. When the chromium carbide film as a whole is 100 at %, the chromium carbide film contains 40-75 at % of Cr. The chromium carbide film in contact with the lubricant oil containing a Mo-trinuclear appears to react with the Mo-trinuclear adsorbed during the sliding to generate a layered structural body (boundary film) similar to MoS2 on the surface, thereby developing a considerably low friction property.