Suction controlled pump for HEUI systems
US6668801B2 · kind B2 · utility
7Cited by
29References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2002 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Dec 2, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B23/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A HEUI system uses a fixed displacement, piston pump to provide a generally constant pump flow of high pressure hydraulic fluid over the operating speed range of the pump to minimize parasitic power drains on the engine. The piston pump includes an orificing suction slot to vary the pump displacement over the operating speed of the pump. A throttling valve at the pump inlet may be provided to starve inlet fluid feed if reduced flow to the injectors is additionally required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.