Device and method for regulating the control valve of a high-pressure pump
US7121263B2 · kind B2 · utility
6Cited by
10References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2002 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Dec 6, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A high-pressure pump is provided in order to supply fuel to the fuel rail of a common rail injection system in an internal combustion engine. The input-side control valve of the pump is closed during the pumping cycle in order to separate the inner chamber of the pump from the low-pressure side. According to the invention, the valve control pulse, by which means the control valve is closed, is active when the pressure wave generated by the upward movement of the pump plunger hits the control valve. The closing of the control valve is assisted by the impact of the pressure wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.