EP 1417398 A1 20040512 - ROTARY ACTUATOR DEVICE FOR CONTROLLING THE STROKE OF A GAS-SHUTTLE POPPET VALVE IN THE CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE
Title (en)
ROTARY ACTUATOR DEVICE FOR CONTROLLING THE STROKE OF A GAS-SHUTTLE POPPET VALVE IN THE CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE
Title (de)
DREHAKTOR-VORRICHTUNG ZUR HUBSTEUERUNG EINES GASWECHSEL-TELLERVENTILS IM ZYLINDERKOPF EINER BRENNKRAFTMASCHINE
Title (fr)
DISPOSITIF D'ACTIONNEUR ROTATIF PERMETTANT DE COMMANDER LA LEVEE D'UNE SOUPAPE A DISQUE DE CHANGEMENT DES GAZ DANS LA CULASSE D'UN MOTEUR A COMBUSTION INTERNE
Publication
Application
Priority
- DE 10140461 A 20010817
- EP 0207998 W 20020718
Abstract (en)
[origin: WO03016683A1] The invention relates to a rotary actuator device for controlling the stroke of a gas shuttle valve in the cylinder head of an internal combustion engine comprising a rotary oscillating motor (8) for driving a disk cam (6) with a cam profile (6') that controls a gas shuttle valve (2), said rotary oscillating motor (8) being controlled according to the co-operation between a closing spring (4) of the poppet valve (2) and a pre-stressed helical torsion spring (21) that acts in opposition to the former as an opening spring. The aim of the invention is to obtain stable end positions for the disk cam (6). To achieve this, the disk cam (6) is fixed in both a closing and opening position of the poppet valve (2) by means of a separate first and second rotational stop and is held and secured against rotation in the respective initial position by means of the opening spring (21), which pretensions a lever (12) located separately on a shaft (7) that supports the disk cam (6). According to the invention, each time the respective initial position is crossed using a relatively small current supply to the rotary oscillating motor (8) or by means of a recoil motion of the corresponding stops, the additional current supply remains at a substantially reduced level, by means of a rotor of the rotary oscillating motor (8), the flywheel effect of said rotor being selected to correspond with the energy exchange between the closing spring (4) and the helical torsion spring (21).
IPC 1-7
IPC 8 full level
F01L 1/08 (2006.01); F01L 9/20 (2021.01); F01L 13/00 (2006.01); F01L 9/22 (2021.01)
CPC (source: EP US)
F01L 9/20 (2021.01 - EP US); F01L 9/22 (2021.01 - EP); F01L 13/0015 (2013.01 - EP US); F01L 9/22 (2021.01 - US); F01L 2305/00 (2020.05 - EP US); F01L 2820/032 (2013.01 - EP US)
Citation (search report)
See references of WO 03016683A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03016683 A1 20030227; CN 1325772 C 20070711; CN 1543533 A 20041103; DE 10140461 A1 20030227; DE 50203423 D1 20050721; EP 1417398 A1 20040512; EP 1417398 B1 20050615; ES 2240789 T3 20051016; JP 2004538417 A 20041224; JP 4210593 B2 20090121; US 2004221824 A1 20041111; US 7055475 B2 20060606
DOCDB simple family (application)
EP 0207998 W 20020718; CN 02816103 A 20020718; DE 10140461 A 20010817; DE 50203423 T 20020718; EP 02760253 A 20020718; ES 02760253 T 20020718; JP 2003520956 A 20020718; US 77721504 A 20040213