Fuel feed apparatus and accumulator fuel injection system having the same
US7594499B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2007 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Dec 7, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M59/34
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel feed apparatus is provided for supplying high-pressure fuel to a common rail of an accumulator fuel injection system. The accumulator fuel injection system includes an injector for injecting high-pressure fuel accumulated in the common rail into a combustion chamber of an internal combustion engine. The fuel feed apparatus includes a high-pressure pump for press-feeding fuel to the common rail, and a feed pump for pumping fuel from a fuel tank to the high-pressure pump. A fuel filter is provided downstream of the feed pump for filtering fuel pumped from the feed pump. A return passage is provided for returning fuel from a downstream of the feed pump to an upstream of the feed pump. A return flow control unit is provided for controlling fuel retuning through the return passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.