US 12,264,602 B2
Rocker arm assembly with rotation-locking mechanism
Zdeněk Hübner, Horoušánky (CZ); Georgios Moraitis, Prague (CZ); Mirko Guaschino, Monferrato (IT); and Peter Terna, Stropkov (SK)
Assigned to Eaton Intelligent Power Limited, Dublin (IE)
Appl. No. 18/560,983
Filed by Eaton Intelligent Power Limited, Dublin (IE)
PCT Filed May 19, 2021, PCT No. PCT/EP2021/063326
§ 371(c)(1), (2) Date Nov. 15, 2023,
PCT Pub. No. WO2022/242850, PCT Pub. Date Nov. 24, 2022.
Prior Publication US 2024/0254899 A1, Aug. 1, 2024
Int. Cl. F01L 1/18 (2006.01); F01L 1/24 (2006.01)
CPC F01L 1/182 (2013.01) [F01L 1/2411 (2013.01); F01L 2001/2444 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A rocker arm assembly, comprising:
a rocker arm comprising:
a body comprising a rocker shaft bore;
a valve end extending from the body;
a force-receiving portion; and
a locking pin;
a rocker shaft comprising:
a channel;
a locking groove;
a rotation-locking mechanism comprising a pressure pin, the rotation-locking mechanism positioned within the channel and movable between a locked position and an unlocked position; and
an oil path configured to supply oil to the locking pin or the pressure pin within the rocker shaft to move the rotation-locking mechanism between the locked position and the unlocked position, wherein the entire oil path is enclosed in the rocker shaft,
wherein the locking pin is biased to engage the locking groove, and
wherein the pressure pin further comprises a travel limit configured to catch in the locking groove to restrict a travel of the pressure pin towards the oil path.