Integrated fuel measurement and control system for gaseous fuels
US5752489A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1997 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Feb 10, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel measurement and control system for a gaseous fuel engine having a solenoid actuated fuel flow control valve which is electronically actuated to control a desired metering duration when the control system is operating in a fuel flow control mode. The fuel measurement and control system further includes mode control valve for switching the control system between a fuel flow control mode and a positive fuel shutoff mode, wherein the fuel flow control valve is prevented from opening when the control system is operating in a positive fuel shutoff mode. The fuel flow control valve includes a pressure balance chamber to balance the biasing forces acting on the valve from the gaseous fuel, wherein gaseous fuel is introduced into the pressure balancing chamber to provide the balancing forces. The mode control valve connects the pressure balance chamber to either the fuel supply or the air stream mixer inlet to provide the desired pressure in the pressure balance chamber, wherein the fuel flow control valve is biased to a closed position and prevented from opening when the pressure balance chamber is connected to the air stream mixer inlet and the fuel flow control valve is pressure b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.