US 12,421,876 B2
Rocker with switchable rollers for engine valvetrains
Nicola Andrisani, Cumiana (IT); Emanuele Raimondi, Collegno (IT); and Massimo D'Amore, Almese (IT)
Assigned to Eaton Intelligent Power Limited, Dublin (IE)
Filed by Eaton Intelligent Power Limited, Dublin (IE)
Filed on Nov. 1, 2024, as Appl. No. 18/934,706.
Application 18/934,706 is a continuation of application No. PCT/EP2023/025224, filed on May 11, 2023.
Claims priority of provisional application 63/340,879, filed on May 11, 2022.
Prior Publication US 2025/0059898 A1, Feb. 20, 2025
Int. Cl. F01L 1/18 (2006.01); F01L 1/46 (2006.01); F01L 13/00 (2006.01); F01L 1/053 (2006.01)
CPC F01L 1/181 (2013.01) [F01L 1/46 (2013.01); F01L 13/0036 (2013.01); F01L 1/053 (2013.01); F01L 2001/186 (2013.01); F01L 2001/467 (2013.01); F01L 2305/02 (2020.05); F01L 2820/031 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rocker arm assembly comprising:
a rocker arm body;
a first roller assembly pivotally connected to the rocker arm body, the first roller assembly including a first roller configured to rotate about a first roller axis and to engage a first cam;
a second roller assembly pivotally connected to the rocker arm body, the second roller assembly including a second roller configured to rotate about a second roller axis and to engage a second cam; and
a latching mechanism configured to selectively decouple one of the first roller assembly or the second roller assembly from the rocker arm body, the latching mechanism comprising:
rocker body pins comprising a first end pin, a second end pin, and a connection pin disposed between the first and second end pins, each of the rocker body pins slidably disposed at least partially within the rocker arm body along a latching axis; and
roller body pins comprising a first locking pin and a second locking pin, the first locking pin disposed between the first end pin and the connection pin, the second locking pin disposed between the connection pin and the second end pin, the first locking pin slidably disposed at least partially within the first roller assembly along the first roller axis, and the second locking pin slidably disposed at least partially within the second roller assembly along the second roller axis,
wherein, when a first latching mode is enabled such that the first roller assembly is deactivated and the second roller assembly is activated, the rocker body pins and the roller body pins are slidably displaced toward the second end pin, and
wherein, when a second latching mode is enabled such that the second roller assembly is deactivated and the first roller assembly is activated, the rocker body pins and the roller body pins are slidably displaced toward the first end pin.