Fuel system with electrically-controllable mechanical pressure regulator
US8210156B2 · kind B2 · utility
7Cited by
63References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2009 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Sep 29, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/85986
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for operating an engine direct injection fuel system is provided. The direct injection fuel system includes a mechanical fuel pressure regulator that has a spring actuatable by an electric motor. The method includes adjusting a preload of the spring by operating the electric motor to adjust a set-point fuel pressure from a first set-point fuel pressure to a second set-point fuel pressure in response to an operating condition, and maintaining the preload of the spring mechanically when the electric motor is not operating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.