Control strategies for a variable displacement oil pump
US7201147B2 · kind B2 · utility
3Cited by
7References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2002 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Jul 5, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M59/105
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine (30) has a fueling system comprising fuel injectors (36) that utilize oil under pressure to force fuel into engine combustion chambers. Oil is pumped to an oil rail (44) by an engine-driven pump (42) whose effective displacement can be varied. A control system (32) processes certain data, such as engine speed and load, for controlling the effective displacement of the pump. The pump has a larger stage (42B) and a smaller stage (42A). The control system selects and de-selects the stages to control pump displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.