US 12,221,909 B2
Sleeved rocker shaft for type III heavy duty valve train
Ramy Rezkalla, Kalamazoo, MI (US); Andrei Radulescu, Marshall, MI (US); and Ryan Krieger, Portage, MI (US)
Assigned to Eaton Intelligent Power Limited, Dublin (IE)
Filed by Eaton Intelligent Power Limited, Dublin (IE)
Filed on Jun. 9, 2022, as Appl. No. 17/836,471.
Application 17/836,471 is a continuation of application No. PCT/EP2020/025591, filed on Dec. 18, 2020.
Claims priority of provisional application 62/950,402, filed on Dec. 19, 2019.
Prior Publication US 2022/0298934 A1, Sep. 22, 2022
Int. Cl. F01L 1/18 (2006.01); B23C 3/00 (2006.01); F01L 9/10 (2021.01); F01L 13/00 (2006.01); F01M 1/06 (2006.01); F01M 9/10 (2006.01)
CPC F01L 1/181 (2013.01) [B23C 3/00 (2013.01); F01L 1/18 (2013.01); F01L 9/10 (2021.01); F01L 13/0005 (2013.01); F01M 1/06 (2013.01); F01M 9/107 (2013.01); F01L 2013/001 (2013.01); F01M 2001/064 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A rocker shaft assembly configured to support a rocker arm and deliver oil to the rocker arm, the rocker shaft assembly comprising:
a core shaft having a core body including at least two oil supply channels formed thereon; and
a sleeve having passages formed thereon;
wherein the sleeve is disposed around the core shaft, each of the at least two oil supply channels aligning with at least one passage of the passages on the sleeve,
wherein the at least two oil supply channels are axially spaced-apart from each other,
wherein the core body further defines a brake oil supply channel and wherein at least one passage of the passages aligns with the brake oil supply channel, and
wherein the core body further defines at least one of a variable valve lift (VVL) and cylinder deactivation (CDA) channel formed thereon and wherein at least one passage of the passages aligns with the at least one of the VVL and CDA channel.