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US 12,025,036 B2Granted
Cylinder deactivation mechanisms for pushrod valve train systems and rocker arms
AssigneeEaton Intelligent Power Limited
InventorsNikhil Kishor Saggam, Matthew Adrian Vance
Life of this patent
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Abstract
A valvetrain assembly comprises a deactivatable rocker arm where a pushrod is configured to transfer a valve lift profile through to a valve end to a valve or valve bridge. A castellation assembly in a carrier and alternative two-piece rocker arm assemblies with rotary or linear actuators are shown for deactivating the transfer of the valve lift profile.
Claims15
A rocker arm assembly, comprising:
- a first rocker arm comprising a first carrier opening;
- a second rocker arm comprising a second carrier opening;
- a carrier positioned in the first carrier opening and in the second carrier opening, the carrier seating:
- a first castellation assembly comprising a first gear-toothed crown;
- a second castellation assembly comprising a second gear-toothed crown;
- and
- an actuation gear meshed between the first castellation assembly and the second castellation assembly to simultaneously rotate the first gear-toothed crown and the second gear-toothed crown.
4 more elements
A rocker arm assembly, comprising:
- a valve side arm comprising a rocker arm plate configured with a latch ledge, a valve end, a pivot location in a carrier opening, a pivot pin bore, and a first spring mount;
- a deactivating arm comprising a second spring mount, a split portion flanking the latch ledge, a pivot pin pass-through in the split portion, a latch bore, and a latch pin configured to reciprocate in the latch bore;
- a pivot pin connecting the pivot pin bore and the pivot pin pass-through;
- and
- a lost motion spring positioned between the first spring mount and the second spring mount.
2 more elements
Dependencies are inferred from the claim text.