Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO2007007168) VARIABLE VALVE SYSTEM FOR INTERNAL COMBUSTION ENGINE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/007168 International Application No.: PCT/IB2006/001911
Publication Date: 18.01.2007 International Filing Date: 11.07.2006
Chapter 2 Demand Filed: 12.01.2007
IPC:
F01L 1/344 (2006.01) ,F01L 1/02 (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
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
1
Valve-gear or valve arrangements, e.g. lift-valve gear
02
Valve drive
Applicants:
TOYOTA JIDOSHA KABUSHIKI KAISHA [JP/JP]; 1, Toyota-cho Toyota-shi Aichi-ken 471-8571, JP (AllExceptUS)
EZAKI, Shuichi [JP/JP]; JP (UsOnly)
Inventors:
EZAKI, Shuichi; JP
Agent:
LESON, Thomas J.A.; TBK-Patent Bavariaring 4-6 80336 München, DE
Priority Data:
2005-20383313.07.2005JP
Title (EN) VARIABLE VALVE SYSTEM FOR INTERNAL COMBUSTION ENGINE
(FR) SYSTEME DE SOUPAPES A DISTRIBUTION VARIABLE POUR MOTEUR A COMBUSTION INTERNE
Abstract:
(EN) The invention relates to a variable valve system for an internal combustion engine including an electric motor that can be rotated in any one of a normal rotation direction and a reverse rotation direction; a first cam (56) that is driven by the electric motor; a second cam (50) that has a same shape as the first cam (56), that is driven by the electric motor, and that differs from the first cam (56) in a rotation phase; a first valve that is opened and dosed by the first cam (56); a second valve that is opened and closed by the second cam (50); and a control unit that controls rotation of the electric motor. Each of the first cam (56) and the second cam (50) is symmetric with respect to a straight line passing a cam center and a cam nose.
(FR) L'invention se rapporte à un système de soupapes à distribution variable pour moteur à combustion interne. Ce système de soupapes comprend un moteur électrique qui peut tourner aussi bien dans un sens de rotation normal que dans un sens de rotation inverse, une première came (56) entraînée par le moteur électrique, une seconde came (50) présentant la même forme que la première came (56), entraînée par le moteur électrique, et différant de la première came (56) par sa phase de rotation, une première soupape dont l'ouverture est commandée et réglée par la première came (56), une seconde soupape ouverte et fermée par la seconde came (50), et une unité de commande qui commande rotation du moteur électrique. La première came (56) et/ou la seconde came (50) sont symétriques par rapport à une droite passant par le centre et le nez de la came.
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, 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:
EP1904719US20090107431CN101223338