Rocker control in lost motion engine valve actuation systems
US12044152B2 · kind B2 · utility
0Cited by
6References
15Claims
0Family size
Assignee
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Key dates
| Filing date | May 7, 2021 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | May 7, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2305/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Systems for valve actuation in internal combustion engines provide rocker control components in the form of biasing mechanisms for biasing the valve side of a lost motion rocker toward the engine valves. This may prevent gaps in the valvetrain, particularly when used with cams having sub-base circle auxiliary motion event profiles. Valvetrain components, such as an e-foot engaging a valve bridge, may be provided with a biasing mechanism and stroke limiting and retaining components to maintain engagement between the e-foot and valve bridge, to control stability of the valve bridge, and to make assembly/disassembly easier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.