Dual intake valve system with one deactivation valve and one multi-lift valve for swirl enhancement
US8312849B2 · kind B2 · utility
32Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2009 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Nov 29, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2800/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a dual intake valve arrangement for an internal combustion engine, a variable valve lift system controls two intake valves for one or more engine cylinders. In each cylinder, one of the intake valves includes an associated two-step actuation device, and the other includes an associated valve deactivation device. To improve in-cylinder air flow turbulence, one valve may be operated in a high-lift or low-lift state while the other valve may be deactivated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.