Fuel injection system
US7574994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2005 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Jun 19, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection system having a high-pressure accumulator, in which fuel may be stored at high pressure, at least one fuel injector via which the fuel located in the high-pressure accumulator may be injected into the combustion chamber of an internal combustion engine being connectable to the high-pressure accumulator. A high-pressure pump draws in fuel out of a leak fuel area, compresses it, and supplies it to the high-pressure accumulator, so that a high fuel pressure is built up therein during operation of the high-pressure pump. A return line having a regulating valve is implemented between the leak fuel area and the high-pressure accumulator, the regulating valve allowing a fuel flow from the leak fuel area into the high-pressure accumulator when the high-pressure pump is shut down.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.