Automotive fuel system having a pressure regulator without a movable diaphragm
US6293259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | May 14, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M69/54
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The fuel system includes a fuel tank for supplying fuel to a fuel rail having fuel injectors and a fuel pressure regulator for regulating the pressure of the fuel supplied to the fuel rail to a predetermined pressure. The pressure regulator includes a spring-biased ball movable toward and away from a valve seat with an intervening flow channel director. The flow channel director is sized to provide a substantially constant regulated pressure over a flow range typical for automotive engine use, i.e., a pressure of 350-430 kPa over a flow range of 20-50 kg/hr. The pressure regulator provides the predetermined regulated pressure without a movable diaphragm dividing the regulator into flow and non-flow chambers on opposite sides of the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.