Internal combustion engine with variable valve gear
US8235015B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2010 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Mar 18, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2800/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Each cylinder is provided with a first intake valve and a second intake valve, and a first intake cam for driving the first intake valve and a second intake cam for driving the second intake valve are coaxially pivotally supported on an intake camshaft. A first cam phase change mechanism which varies respective phases of the first and second intake cams relative to a crankshaft of the internal combustion engine is combined with a second cam phase change mechanism which varies a phase of the second intake cam relative to the first intake cam. The second cam phase change mechanism is set to have a variable-phase angular range wider than that of the first cam phase change mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.