Electric fuel pump for motor vehicle
US5580213A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1995 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Dec 13, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D13/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A motor vehicle fuel pump including an electric motor, a high pressure pump, and a low pressure pump having a side channel pumping stage for pumping fuel from a fuel tank to a reservoir and a regenerative turbine pumping stage for pumping fuel from the reservoir to the high pressure pump. A pair of radial vapor ports are disposed between an inside diameter of a pump channel of the turbine pumping stage and an outside diameter of a concentric, radially inboard pump channel of the side channel pumping stage at a discharge port of the pump channel of the side channel pumping stage. Liquid fuel with entrained vapor near the inside diameter of the pump channel of the turbine pumping stage is aspirated through the radial vapor ports into the discharge port of the pump channel of the side channel pumping stage by liquid fuel flowing in the pump channel of the side channel pumping stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.