Valvetrain with rocker arm housing magnetic latch
US10731517B2 · kind B2 · utility
0Cited by
9References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2018 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Jan 22, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/1615
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valvetrain includes a rocker arm assembly having a rocker arm and an electromagnetic latch assembly. A magnet of the latch assembly is housed within a chamber formed by the rocker arm. The chamber may be a retrofit hydraulic chamber. The magnet may be an electromagnet or a permanent magnet. A flux shifting bi-stable latch provides a sufficiently compact design. Isolation of the magnet within the rocker arm chamber may provide protection from metal particles carried by oil in an operating environment for the rocker arm assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.