US 12,378,902 B2
Roller rocker arm assembly
Ondrej Cisar, Dvur Kralove nad Labem (CZ); and Zdenek Hubner, Kamen (CZ)
Assigned to Eaton Intelligent Power Limited, Dublin (IE)
Appl. No. 18/246,888
Filed by Eaton Intelligent Power Limited, Dublin (IE)
PCT Filed Oct. 1, 2021, PCT No. PCT/EP2021/025379
§ 371(c)(1), (2) Date Mar. 28, 2023,
PCT Pub. No. WO2022/069080, PCT Pub. Date Apr. 7, 2022.
Claims priority of provisional application 63/086,260, filed on Oct. 1, 2020.
Prior Publication US 2023/0407770 A1, Dec. 21, 2023
Int. Cl. F01L 1/18 (2006.01); F01L 1/053 (2006.01); F01L 13/00 (2006.01); F01L 1/26 (2006.01); F01L 1/46 (2006.01)
CPC F01L 1/181 (2013.01) [F01L 1/053 (2013.01); F01L 13/0015 (2013.01); F01L 1/26 (2013.01); F01L 2001/467 (2013.01); F01L 2305/00 (2020.05)] 12 Claims
OG exemplary drawing
 
9. A center pivot roller rocker arm assembly comprising:
a main roller rocker arm comprising:
a rocker shaft bore;
a valve end;
a cam end; and
a main cam surface on the cam end;
a second roller rocker arm, comprising:
a second rocker shaft bore;
a second cam end; and
a second cam surface on the second cam end; and
a latching assembly coupled to the rocker shaft bore and configured to latch and unlatch the main roller rocker arm to the second roller rocker arm,
wherein, when the latching assembly is latched, at a predetermined cam angle of an adjacent cam both the main cam surface and the second cam surface are configured to contact the adjacent cam and after the predetermined cam angle and until a valve closing only the second cam surface continues to contact the adjacent cam, and
wherein the predetermined cam angle corresponds to a maximum valve lift,
wherein the main roller rocker arm comprises a main latch socket extending from the rocker shaft bore and a main latch configured to slide in the main latch socket, and wherein the second roller rocker arm comprises a second latch socket and a secondary latch configured to slide in the second latch socket.