Tapered toroidal flow control valve and fuel metering device
US7284542B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 15, 2006 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Oct 10, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel metering device utilizing a tapered toroid shaped flow control valve placed between a pressure chamber and a discharge space, with a seal, fixedly mounted to the valve, fluidically isolating the pressure chamber from the discharge space when the valve is in its closed position, and a rotary actuator capable to move the toroidal valve about a fixed fulcrum to deliver a precisely metered amount of a preferably gaseous fuel to an internal combustion engine. The device further comprises a biasing spring, to close the valve when the rotary actuator is de-energized, and a rotary position sensor, which, in co-operation with the rotary actuator enable accurate angular positioning of the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.