Suction controlled pump for HEUI systems
US6227167A · kind A · utility
20Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2000 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Apr 20, 2020 |
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, axial displacement 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 axial piston pump includes a 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.