US 12,215,611 B1
Spacer equipped to spray oil and rocker arm assembly for valvetrain
Quinton Burcar, Chillicothe, IL (US); Michael D. Roley, Washington, IL (US); Paul K. Stark, Peoria, IL (US); and Ram P. Anjaneyulu, Chennai Tamil Nadu (IN)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Mar. 20, 2024, as Appl. No. 18/610,672.
Int. Cl. F01M 9/10 (2006.01); F01L 1/18 (2006.01)
CPC F01M 9/10 (2013.01) [F01L 1/181 (2013.01); F01M 9/105 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A valvetrain assembly comprising:
a camshaft;
a rocker shaft including an axially extending oil supply passage;
a plurality of rocker arms pivotally mounted to the rocker shaft;
a spacer pivotally mounted to the rocker shaft at a position adjacent to a first rocker arm of the plurality of rocker arms, the spacer including:
a cylindrical outer surface,
a cylindrical inner surface defining a through-bore configured to receive the rocker shaft,
an oil spray port extending from the inner surface to the outer surface, and
a spacer arm extending transversely away from the outer surface, the spacer arm including a rocker engagement surface configured to engage the first rocker arm so as to rotationally couple the spacer to the first rocker arm when pivoting about the rocker shaft; and
a circumferentially extending fluid groove defined between the inner surface and the rocker shaft, the fluid groove configured to fluidly connect the oil supply passage to the oil spray port.