Method for variable valve actuation to provide positive power and engine braking
US7565896B1 · kind B1 · utility
17Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2008 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Feb 28, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D13/0207
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control method for transitioning from positive power to engine braking (and vice-versa) is disclosed. This transition may be made using variable valve actuation and two-stroke braking. The process may involve three engine operation modes: positive power (i.e., firing or non-braking), engine braking, and transition between engine braking and positive power. The intake and exhaust valve actuations provided for each of the different modes of operation may be different from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.