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1. (WO2018185847) PISTON
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2018/185847 International Application No.: PCT/JP2017/014124
Publication Date: 11.10.2018 International Filing Date: 04.04.2017
Chapter 2 Demand Filed: 31.08.2017
IPC:
F02F 3/10 (2006.01) ,F02B 23/10 (2006.01) ,F02F 3/14 (2006.01)
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
3
Pistons
10
having surface coverings
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
23
Other engines characterised by special shape or construction of combustion chambers to improve operation
08
with positive ignition
10
with separate admission of air and fuel into cylinder
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
3
Pistons
10
having surface coverings
12
on piston heads
14
within combustion chambers
Applicants:
日産自動車株式会社 NISSAN MOTOR CO., LTD. [JP/JP]; 神奈川県横浜市神奈川区宝町2番地 2, Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa 2210023, JP
ルノー エス.ア.エス. RENAULT S.A.S. [FR/FR]; エフ-92100 ブローニュ-ビヤンクール、ケル ガロ 13-15 13-15, Quai Le Gallo, F-92100 Boulogne-Billancourt, FR (AL, AT, BE, BG, CH, CN, 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)
Inventors:
鈴木 琢磨 SUZUKI, Takuma; JP
馬渕 豊 MABUCHI, Yutaka; JP
鈴木 ゆか SUZUKI, Yuka; JP
Agent:
特許業務法人後藤特許事務所 GOTOH & PARTNERS; 東京都千代田区霞が関三丁目3番1号尚友会館 Shoyu-Kaikan, 3-1, Kasumigaseki 3-chome, Chiyoda-ku, Tokyo 1000013, JP
Priority Data:
Title (EN) PISTON
(FR) PISTON
(JA) ピストン
Abstract:
(EN) The present invention is a piston for an internal combustion engine, wherein a recessed part for holding an air intake swirling flow is formed in a crown surface of the piston. The crown surface is provided with: a heat insulating film formation part having a heat insulating film which has a thermal conductivity lower than that of a base material of the piston, and also has a thermal capacity per unit volume lower than that of the base material of the piston; and a heat insulating film non-formation part that does not have a heat insulating film and that is positioned further to the outside on a cylinder bore side of the internal combustion engine than the heat insulating film formation part.
(FR) La présente invention concerne un piston destiné à un moteur à combustion interne, une partie évidée qui permet de retenir un écoulement tourbillonnant d'admission d'air étant formée dans une surface en couronne du piston. La surface en couronne est pourvue : d'une partie formation de film calorifuge comportant un film calorifuge qui présente une conductivité thermique inférieure à celle d'un matériau de base du piston et qui présente également une capacité thermique par volume unitaire inférieure à celle du matériau de base du piston; et d'une partie non formation de film calorifuge qui ne comporte pas de film calorifuge et qui est positionnée davantage vers l'extérieur sur un côté de trou de cylindre du moteur à combustion interne par rapport à la partie formation de film calorifuge.
(JA) 内燃機関のピストンであって、ピストンの冠面には、吸気旋回流を保持する凹部が形成されており、冠面は、熱伝導率が前記ピストンの母材よりも低く、かつ、体積当たりの熱容量が前記ピストンの母材よりも小さい断熱膜を有する断熱膜形成部と、断熱膜形成部よりも内燃機関のシリンダボア側の外側位置にあって断熱膜を有しない断熱膜非形成部と、を備える。
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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, 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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)