Variable valve mechanism for engine
US10294827B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2017 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Dec 4, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2810/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable valve mechanism includes a camshaft and a cam unit. Internal spline teeth provided at an inner periphery of a sleeve of the cam unit are in mesh with external spline teeth provided at an outer periphery of the camshaft. An engaging portion is provided at one of the inner periphery of the sleeve and the outer periphery of the camshaft, and is configured to retractably project toward the other one of the inner periphery of the sleeve and the outer periphery of the camshaft. A latching portion is provided at the other one of the inner periphery of the sleeve and the outer periphery of the camshaft. The sleeve has a through-hole that is provided at the same position in a circumferential direction as the engaging portion to supply the inner periphery of the sleeve with lubricating oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.