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1. (WO2007002582) ACTUATOR AND CONTROL METHOD FOR VARIABLE VALVE TIMING (VVT) MECHANISM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/002582 International Application No.: PCT/US2006/024795
Publication Date: 04.01.2007 International Filing Date: 26.06.2006
IPC:
F01L 1/14 (2006.01) ,F01L 1/34 (2006.01) ,F01L 1/344 (2006.01) ,F01L 13/00 (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
1
Valve-gear or valve arrangements, e.g. lift-valve gear
12
Transmitting-gear between valve drive and valve
14
Tappets; Push-rods
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
34
characterised by the provision of means for changing the timing of the valves without changing the duration of opening
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
34
characterised by the provision of means for changing the timing of the valves without changing the duration of opening
344
changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
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
13
Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
Applicants:
BORGWARNER INC [US/US]; c/o Brown & Michaels, PC 400 M&T Bank Building 118 North Tioga Street Ithaca, NY 14850, US (AllExceptUS)
SIMPSON, Roger [US/US]; US (UsOnly)
MOTT, Philip [US/US]; US (UsOnly)
Inventors:
SIMPSON, Roger; US
MOTT, Philip; US
Agent:
DZIEGIELEWSKI, Greg ; BorgWarner Inc. 3850 Hamlin Road Auburn Hills, MI 48326, US
Priority Data:
60/694,17227.06.2005US
Title (EN) ACTUATOR AND CONTROL METHOD FOR VARIABLE VALVE TIMING (VVT) MECHANISM
(FR) VERIN ET METHODE DE CONTROLE POUR UN MECANISME DE DISTRIBUTION A PROGRAMME VARIABLE
Abstract:
(EN) A variable valve timing system includes a toothed rotating sleeve, a rack, and an actuator. The rack has a first end, a second end with a plurality of teeth in meshing contact with the teeth of rotating sleeves of the valve and being linearly moveable to rotate the sleeves. The actuator includes a housing, a control valve, and at least one check valve. The housing slidably receives a piston coupled to the rack separating a chamber in the housing into first and second chambers. The control valve selectively directs fluid from the first to the second chamber or vice versa. When the rack is shifted linearly by vibrational impulses from the engine, the piston moves linearly within the housing, pressurizing the first or the second chamber and under control of the control valve, fluid recirculates from the first or the second chamber to the other chamber.
(FR) Système de distribution à programme variable incluant un manchon rotatif denté, une crémaillère et un vérin. La crémaillère a une première extrémité et une deuxième extrémité avec une pluralité de dents qui s’engrènent avec les dents du manchon rotatif de la soupape et se déplacent de manière linéaire pour faire tourner le manchon. Le vérin se compose d’un logement, d’une soupape de commande et d’au moins un clapet antiretour. Le logement accueille, par coulissement, un piston couplé à la crémaillère, séparant le logement en deux compartiments. La soupape de commande achemine le fluide de manière sélective du premier au deuxième compartiment ou vice versa. Lorsque la crémaillère est décalée linéairement, par les impulsions vibratoires du moteur, le piston se déplace de façon linéaire à l’intérieur du logement, mettant sous pression le premier ou le second compartiment, et, sous le contrôle de la soupape de commande, le fluide repasse du premier au second compartiment, ou inversement.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, 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, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP1902200US20080149058