Increased engine braking with adjustable valve timing
US7201140B2 · kind B2 · utility
5Cited by
7References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2004 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Jul 8, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D13/0253
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method for operating at least an intake and exhaust valve in a cylinder with a piston of an engine in a vehicle are described. In one aspect, the method comprises maintaining at least one of the intake and exhaust valves in a closed position during a period. Further, during said period where said at least one valve is in said closed position, the method may also include opening the other of the intake and exhaust valve, then closing the other of the intake and exhaust valve, and then opening the other of the intake and exhaust valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.