Spacer equipped to spray oil and rocker arm assembly for valvetrain
AssigneeCaterpillar Inc.
InventorsQuinton Burcar, Michael D. Roley, Paul K. Stark, Ram P. Anjaneyulu
Life of this patent
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Abstract
A spacer for a valvetrain in an engine system includes a spacer body defining a spacer axis extending between a first axial spacer body end and a second axial spacer body end, and including an outer peripheral surface, a circumferentially extending inner peripheral surface forming a through-bore, an oil spray port extending from the inner peripheral surface to the outer peripheral surface, and a circumferentially extending fluid groove formed in the inner peripheral surface and extending to the oil spray port. Related valvetrain and rocker arm assembly apparatus is also disclosed.
Claims17
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.
A rocker arm assembly comprising:
- a rocker arm;
- and
- a spacer with a spacer body including:
- a first body portion including a cylindrical outer surface, a cylindrical inner surface defining a through-bore extending along a spacer axis, an oil spray port extending from the inner surface to the outer surface, and a circumferentially extending fluid groove formed in the inner surface so as to extend to the oil spray port;
- and
- a second body portion including an arm extending outwardly from the outer surface, the second portion configured to couple the spacer to the rocker arm.
A spacer for a valvetrain in an engine system, the spacer comprising:
- a spacer body including:
- a first axial end surface,
- a second axial end surface,
- a cylindrical outer surface,
- a cylindrical inner surface defining a through-bore extending from the first axial end surface to the second axial end surface along a spacer axis,
- an oil spray port extending from the inner surface to the outer surface,
- a circumferentially extending fluid groove formed in the inner surface so as to extend to the oil spray port;
- and
- an arm extending transversely away from the outer surface, the arm including a rocker engagement surface.
Dependencies are inferred from the claim text.