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1. (WO2018025149) HYDRAULIC TAPPET
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Pub. No.: WO/2018/025149 International Application No.: PCT/IB2017/054642
Publication Date: 08.02.2018 International Filing Date: 31.07.2017
IPC:
F01L 1/18 (2006.01) ,F01L 1/24 (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
1
Valve-gear or valve arrangements, e.g. lift-valve gear
12
Transmitting-gear between valve drive and valve
18
Rocking arms or levers
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
22
automatically
24
by fluid means, e.g. hydraulically
Applicants:
GNUTTI CARLO S.P.A. [IT/IT]; Via Artigiani, 2 25030 Maclodio (Brescia), IT
Inventors:
EDELMAYER, Thomas Carl; IT
FARISE', Stefano; IT
FASANOTTO, Umberto; IT
Agent:
FIRMATI, Leonardo; IT
Priority Data:
10201600008317305.08.2016IT
Title (EN) HYDRAULIC TAPPET
(FR) POUSSOIR HYDRAULIQUE
Abstract:
(EN) Described is a hydraulic tappet of an internal combustion engine, comprising a rocker (2) oscillating about a respective axis (A1) of oscillation to control the movement of at least one valve, the rocker (2) having, at a relative arm (B2), a through cavity (5) extending with axial symmetry having a central axis (A2) skew relative to the above-mentioned axis (A1) of oscillation, the cavity (5) having an inner wall (5a), a lower outlet (6) and a upper outlet (7) longitudinally opposite each other; a plunger (8) engaged slidably inside the cavity (5) and emerging from it partially at the relative lower outlet (6), the plunger (8) being configured to engage with a respective element (9) for pushing at least one valve; a check valve unit (10) designed to adjust a flow of oil circulating inside the cavity (5), the valve unit (10) comprising a main body (11) located inside the cavity (5) for closing the relative upper outlet (7).
(FR) L'invention concerne un poussoir hydraulique d'un moteur à combustion interne, comprenant un culbuteur (2) oscillant autour d'un axe respectif (A1 ) d'oscillation pour commander le déplacement d'au moins une soupape. Le culbuteur (2) comporte au niveau d'un bras relatif (B2) une cavité traversante (5) s'étendant avec une symétrie axiale ayant un axe central (A2) en biais par rapport à l'axe d'oscillation (A1) déjà mentionné. La cavité (5) comporte une paroi interne (5a), une sortie inférieure (6) et une sortie supérieure (7) longitudinalement opposé l'une de l'autre. Un piston (8) s'engage de manière coulissante à l'intérieur de la cavité (5) et sort de celle-ci partiellement au niveau de la sortie inférieure relative (6), le piston (8) étant configuré pour coopérer avec un élément respectif (9) pour pousser au moins une soupape. Une unité de clapet de non-retour (10) est conçue pour ajuster un flux d'huile circulant à l'intérieur de la cavité (5), et comprend un corps principal situé à l'intérieur de la cavité (5) pour fermer la sortie supérieure relative (7).
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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, JO, 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)