Fuel pump module
US6158975A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1998 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Sep 24, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M37/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel pump module constructed to be disposed exteriorly of a vehicle fuel tank carries, as a single unit, an electric motor fuel pump and a pressure control device which controls the pressure of fuel delivered to an internal combustion engine from the fuel pump. Fuel supplied from the fuel tank to the module is drawn into the fuel pump which increases the pressure of the fuel and then discharges the fuel under pressure from an outlet of the fuel pump which communicates with the pressure control device carried by the module and an outlet of the module which in turn, communicates with the engine. The pressure control device may be either a pressure relief valve, which functions to limit the maximum pressure of the fuel delivered to the engine, or a fuel pressure regulator, such as a bypass pressure regulator, which bypasses to a point upstream of the fuel pump inlet fuel delivered from the fuel pump in excess of the engine's fuel demand. Mounting the pressure control device and fuel pump in a common module reduces the number of fuel lines in the fuel system and avoids the problems associated with return fuel systems which return heated, excess fuel from a hot fuel rail. Desirably, a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.