Variable valve timing gear
US5509384A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1994 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | Sep 20, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2102
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable valve timing gear is suitable for internal-combustion engines of a piston construction which comprise intake and exhaust valves for the charge cycle control. The intake and exhaust valves are actuated by a camshaft which has intake and exhaust cams for this purpose. For influencing the valve overlap of the intake and exhaust valves, the intake and exhaust valves are constructed so that they can be rotated with respect to one another, for which a control arrangement is provided. This control arrangement is provided with a control element which is axially movably arranged in a bore of the camshaft and rotates the intake cams with respect to the exhaust cams via drivers constructed as pins and control guides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.