Development of a switching roller finger follower for cylinder deactivation in internal combustion engines
US10415439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2017 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Jan 23, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2107
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system includes a rocker arm assembly for operative engagement with a first and second cam. The assembly includes a first arm for operatively engaging the first cam for a first desired lift profile, a second arm for operatively engaging the second cam for a second desired lift profile, where the second arm includes a latch to engage the second arm with the first arm. The latch is responsive to supplied oil pressure and release oil pressure to switch between lift profiles. The system includes the latch coupled to the supplied or released oil pressure to engage the arms before the first and second arms are engaged with the base circle portion of each of the respective first and second cams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.