Engine brake apparatus
US7793624B2 · kind B2 · utility
4Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2007 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Feb 15, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/186
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Apparatus and methods for hydraulic valve actuation of engine valves are disclosed. An exemplary embodiment of the present invention may include a lost motion piston assembly that transfers motion between first and second rocker arms to selectively provide auxiliary engine valve actuation motions to the engine valves for engine operations such as engine braking and exhaust gas recirculation. The lost motion piston assembly may reduce or eliminate transient loads that may otherwise be transmitted to engine valve train elements during the times that lost motions systems are turned on and off for auxiliary valve actuations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.