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1. WO2000042300 - IMPROVEMENTS IN A VARIABLE VALVE TIMING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

Publication Number WO/2000/042300
Publication Date 20.07.2000
International Application No. PCT/CA2000/000033
International Filing Date 12.01.2000
Chapter 2 Demand Filed 08.08.2000
IPC
F01L 1/14 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting-gear between valve drive and valve
14Tappets; Push-rods
F01L 1/46 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
46Component parts, details, or accessories, not provided for in preceding subgroups
F01L 13/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
F02M 39/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
39Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
CPC
F01L 1/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
02Valve drive
04by means of cams, camshafts, cam discs, eccentrics or the like
08Shape of cams
F01L 1/14
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
12Transmitting gear between valve drive and valve
14Tappets
F01L 1/46
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
46Component parts, details, or accessories, not provided for in preceding subgroups
F01L 13/0042
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
13Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
0015for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
0036the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
0042with cams being profiled in axial and radial direction
F01L 2105/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2105Valve arrangements comprising rollers
F01L 2800/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2800Methods of operation using a variable valve timing mechanism
Applicants
  • AZTEC INC. [CA/CA]; Suite 1510 444 - 5th Avenue SW Calgary, Alberta T2P 2T8, CA (AllExceptUS)
  • POMERLEAU, Daniel, G. [CA/CA]; CA (UsOnly)
  • VOGHELL, Mark [CA/CA]; CA (UsOnly)
Inventors
  • POMERLEAU, Daniel, G.; CA
  • VOGHELL, Mark; CA
Agents
  • HICKS, Andrew, R. ; Borden Ladner Gervais LLP 1000-60 Queen Street Ottawa, Ontario K1P 5Y7, CA
Priority Data
2,257,43712.01.1999CA
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVEMENTS IN A VARIABLE VALVE TIMING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
(FR) AMELIORATIONS APPORTEES A UN SYSTEME DE REGLAGE DE DISTRIBUTION VARIABLE SUR UN MOTEUR A COMBUSTION INTERNE
Abstract
(EN)
The invention relates to improvements in variable valve timing for an internal combustion engine. Specifically, the end design of a valve lifter or valve stem that provides a fine contact point with a variable profile cam that can enable its movement across the cam in order to provide a greater range of valve timing. In addition, the system provides a camshaft and camshaft journal system which allows for axial movement of a cam shaft on the basis of engine rpm and which allows for advancing or retarding a camshaft system on the basis of engine rpm.
(FR)
L'invention concerne des améliorations apportées au réglage de distribution variable sur un moteur à combustion interne. L'invention se rapporte plus particulièrement à la conception d'une extrémité de poussoir de soupape ou de tige de soupape, offrant un point de contact fin avec une came profilée variable, et permettant son mouvement autour de ladite came, de façon à élargir la gamme de réglage de distribution. De plus, le système comprend un système d'arbre à cames et de tourillon d'arbre à cames autorisant un mouvement axial d'un arbre à cames sur la base du régime moteur et permettant d'avancer ou de retarder un système d'arbre à cames sur la base du régime moteur.
Also published as
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