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1. (WO2015115153) PISTON RING
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2015/115153 International Application No.: PCT/JP2015/050472
Publication Date: 06.08.2015 International Filing Date: 09.01.2015
IPC:
F16J 9/26 (2006.01) ,F02F 5/00 (2006.01) ,F16J 10/00 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
J
PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
9
Piston-rings, seats therefor; Ring sealings of similar construction in general
26
characterised by the use of particular materials
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F
CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
5
Piston rings, e.g. associated with piston crown
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
J
PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
10
Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
Applicants: KABUSHIKI KAISHA RIKEN[JP/JP]; 8-1, Sanbancho, Chiyoda-ku, Tokyo 1028202, JP
Inventors: MATSUBARA Makoto; JP
Agent: TAKAISHI Kitsuma; JP
Priority Data:
2014-01416129.01.2014JP
Title (EN) PISTON RING
(FR) SEGMENT DE PISTON
(JA) ピストンリング
Abstract:
(EN) In order to provide a piston ring on which an amorphous carbon film is formed and which has excellent wear resistance and scuff resistance with respect to an aluminum alloy cylinder or cylinder liner, and thus to reduce fuel consumption in an automobile, an amorphous carbon film is formed on the sliding surface of the piston ring, said amorphous carbon film having a Martens hardness (HMT 115) of 5.0 GPa or greater, with the product of the Martens hardness (HMT 115) and the maximum peak height (Sp) of the three-dimensional surface roughness of the surface being 5.0 kPa·m or less.
(FR) Selon l'invention, pour permettre d'obtenir un segment de piston sur lequel un film de carbone amorphe est formé et qui présente d'excellentes qualités de résistance à l'usure et de résistance à l'abrasion relativement à un cylindre ou une chemise de cylindre en alliage d'aluminium, et donc pour réduire la consommation de carburant dans un véhicule automobile, un film de carbone amorphe est formé sur la surface de glissement du segment de piston, ledit film de carbone amorphe ayant une dureté Martens (HMT 115) de 5,0 GPa ou plus, le produit de la dureté Martens (HMT 115) et de la hauteur de pic maximale (Sp) de la rugosité de surface tridimensionnelle de la surface étant de 5,0 kPa.m ou moins.
(JA)  自動車の低燃費化のため、アルミ合金製のシリンダ又はシリンダライナに対し、耐摩耗性及び耐スカッフ性に優れた非晶質炭素皮膜を形成したピストンリングを提供するため、マルテンス硬さHMT115 が5.0 GPa 以上であり、前記マルテンス硬さHMT115 と表面の三次元表面粗さの最大山高さSp との積が5.0 kPa・m 以下となる非晶質炭素皮膜をピストンリングの摺動面に形成する。
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)