Device for controlling flow rate of a direct injection fuel pump
US7270113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2003 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Oct 23, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M59/466
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a method for controlling high pressure fuel supply of a set of injectors connected to a common high pressure chamber, called common rail C in a direct injection fuel circuit, through a high pressure pump (P), by acting on the low pressure supply of said pump (P) through an electromagnetic slide valve (E), controlled by the computer managing the operating conditions of the engine which consists in providing, inside the electromagnetic valve (E) one or more internal leakage flows, either from high pressure to low pressure, or from low pressure upstream of the electromagnetic valve (E) to the low pressure downstream thereby solving the specific problems related to the three operating modes of the engine: engine brake, engine shutdown, idle speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.