US 12,188,381 B2
Valve-actuating device having a switching device
Martin Klampfer, Hitzendorf (AT); Andreas Zurk, Weinburg (AT); and Thomas Salmutter, Graz (AT)
Assigned to AVL LIST GMBH, Graz (AT)
Appl. No. 18/042,691
Filed by AVL LIST GMBH, Graz (AT)
PCT Filed Aug. 24, 2021, PCT No. PCT/AT2021/060291
§ 371(c)(1), (2) Date Feb. 23, 2023,
PCT Pub. No. WO2022/040710, PCT Pub. Date Mar. 3, 2022.
Claims priority of application No. A 50710/2020 (AT), filed on Aug. 24, 2020.
Prior Publication US 2023/0332518 A1, Oct. 19, 2023
Int. Cl. F01L 1/14 (2006.01); F01L 1/18 (2006.01); F01L 1/46 (2006.01); F01L 13/00 (2006.01); F01L 13/06 (2006.01); F01L 1/047 (2006.01)
CPC F01L 1/146 (2013.01) [F01L 1/18 (2013.01); F01L 1/181 (2013.01); F01L 1/46 (2013.01); F01L 13/0036 (2013.01); F01L 13/06 (2013.01); F01L 2001/054 (2013.01); F01L 2001/186 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A valve-actuating device for actuating at least one valve of a reciprocating piston engine, the valve-actuating device comprising:
a mechanical coupling apparatus including a locking element configured to be switched between at least a first position and a second position, the mechanical coupling apparatus configured to transmit an actuating movement to the at least one valve when the locking element is in the first position;
a switching device configured to alternately actuate the locking element into the first position and the second position, the switching device comprising:
a guide rod;
an actuating rod extending parallel to the guide rod, the actuating rod configured to move relative to the guide rod in an axial direction of the actuating rod, the actuating rod including a first stop and a second stop;
a first spring element and a second spring element pressed between and respectively associated with the first and second stops;
a slotted guide element slidably mounted on the guide rod and the actuating rod, the slotted guide element configured to engage the locking element so as to switch the locking element between the first position and the second position; and
a triggering element coupled to the slotted guide element in so as to collectively slide with the slotted guide element relative to the guide rod and the actuating rod along the axial direction of the actuating rod, the triggering element and the slotted guide element being collectively pressed between the first and second spring elements; and
a blocking element configured to:
in a first state, block the collective sliding of the triggering element and the slotted guide element relative to the guide rod as the actuating rod moves in the axial direction such that at least one spring element of the first and second spring elements is preloaded, and,
in a second state, enable the collective sliding of the triggering element and the slotted guide element relative to the guide rod and the actuating rod via the at least one spring element so as to effect actuation of the mechanical coupling apparatus,
wherein the mechanical coupling apparatus further includes a tappet secured to the locking element, the tappet configured to interact with a link of the slotted guide element so as to displace the locking element.