Engine expansion braking with adjustable valve timing
US6959689B1 · kind B1 · utility
7Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2004 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Jul 8, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2009/2169
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method for controlling operation of cylinder with at least an intake and exhaust valve and a piston 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, closing the other of the intake and exhaust valves with the piston at a first position from, and then opening the other of the intake and exhaust valves at a second position of the piston closer to bottom center than said first position, during said period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.