Dynamic locking and releasing cam lobe
US11028739B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 2020 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Jul 16, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2201/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method and system for intermittently operating poppet valves in an internal combustion engine when desired by the selective locking or unlocking of one or more cam lobes with the camshaft. One or more cam lobes, with a small radial clearance, ride on a camshaft such that an engagement mechanism may be activated as desired to lock the cam lobe to the camshaft, thereby activating the respective poppet valve. The cam lobe is prevented from moving axially to ensure correct alignment with a follower. A suitable holding device may be used to ensure the non-activated cam lobes are restrained at a suitable orientation relative to the cam follower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.