Variable valve unit for internal combustion engine
US7314027B2 · kind B2 · utility
11Cited by
2References
20Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Apr 12, 2005 |
| Grant date | Jan 1, 2008 |
| Priority date | — |
| Expiry date | Aug 25, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2305/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable valve unit for an internal combustion engine includes a first arm opening and closing a valve, a second arm driven by a cam, a third arm receiving a displacement of the second arm to drive the first arm, and a variable mechanism displacing the fulcrum of the second arm. The second arm has a drive plane. The third arm has a shaft member formed with a driven surface contacting with the drive plane. The displacement of the second arm is transmitted to the third arm with sliding between the driven surface and the drive plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.