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1. (WO2017153886) DRIVE TRAIN FOR VALVES WITH CURVED STEM
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Pub. No.: WO/2017/153886 International Application No.: PCT/IB2017/051287
Publication Date: 14.09.2017 International Filing Date: 06.03.2017
IPC:
F01L 3/20 (2006.01) ,F01L 1/30 (2006.01) ,F01L 1/20 (2006.01) ,F01L 3/00 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
L
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
3
Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
20
Shapes or constructions of valve members, not provided for in preceding subgroups of this group
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
L
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1
Valve-gear or valve arrangements, e.g. lift-valve gear
30
characterised by the provision of positively opened and closed valves, i.e. desmodromic valves
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
L
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1
Valve-gear or valve arrangements, e.g. lift-valve gear
20
Adjusting or compensating clearance, i.e. lash adjustment
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
L
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
3
Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
Applicants:
PALIO ENGINE SOLUTION S.R.L [IT/IT]; Via Napoli n. 155 80013 Casalnuovo di Napoli (NA), IT
Inventors:
PALESE, Antonio; IT
Agent:
LEONE, Mario; IT
CANTALUPPI, Stefano; IT
CURRADO, Luisa; IT
FABRIS, Stefano; IT
GHIRARDI, Valeria; IT
LOCAS, Davide; IT
MORABITO, Sara; IT
SPADARO, Marco; IT
SUSANETTO, Carlo; IT
Priority Data:
102016000023776 (UA2016A001434)08.03.2016IT
Title (EN) DRIVE TRAIN FOR VALVES WITH CURVED STEM
(FR) TRANSMISSION POUR SOUPAPES AVEC TIGE COURBÉE
Abstract:
(EN) A rotary valvetrain system, with a curved valve control stem, for opening and closing valves in a four-stroke internal combustion engine, allows a decrease in the dissipations and load losses, with the maximum system compactness, and it comprises: a valve (7; 16) with curved stem (30; 34); a rocker arm (9; 18) constrained to said valve (7; 16), having a respective spindle (10; 19) and recesses (9d, 9e) for housing a pair of disk-like cam followers (12; 21) and respective backlash-recovering plates (13; 22) interposed between the corresponding disk-like cam follower (12; 21) and said rocker arm (9; 18); a valve guide (14; 23) inserted in a respective seat at a duct which is opened and closed by said valve, wherein said curved stem (30; 34) slides sealingly; a sealing spring (15; 24) acting on said spindle (10; 19) to bring the valve (7; 16) in closing position; and a camshaft (25; 26) acting on said cam followers (12; 21).
(FR) La présente invention concerne un dispositif de commande de soupapes rotatif, avec une tige de commande de soupape courbée, pour ouvrir et fermer des soupapes dans un moteur à combustion interne à quatre temps, qui permet une diminution des dissipations et des pertes de charges, avec une compacité de système maximal, et il comprend : une soupape (7 ; 16) ayant une tige courbée (30 ; 34) ; un culbuteur (9 ; 18) raccordé à ladite soupape (7 ; 16), comportant une tige respective (10 ; 19) et des évidements (9d, 9e) pour loger une paire de poussoirs de soupape en forme de disque (12 ; 21) et des plaques de rattrapage de jeu respectives (13 ; 22) intercalées entre le poussoir de soupape en forme de disque correspondant (12 ; 21) et ledit culbuteur (9 ; 18) ; un guide de soupape (14 ; 23) inséré dans un siège respectif au niveau d’un conduit qui est ouvert et fermé par ladite soupape, ladite tige courbée (30 ; 34) coulissant de façon étanche ; un ressort d’étanchéité (15 ; 24) agissant sur ladite tige (10 ; 19) pour amener la soupape (7 ; 16) dans une position de fermeture ; et un arbre à cames (25 ; 26) agissant sur ledit poussoir de soupape (12 ; 21).
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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 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: English (EN)
Filing Language: Italian (IT)