Fuel supplying device for use in fuel injection type internal combustion engine
US4294213A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 10, 1979 |
| Grant date | Oct 13, 1981 |
| Priority date | — |
| Expiry date | Jul 10, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M69/386
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel supplying device for use in fuel injection type internal combustion engine. The device has a fuel metering device operatively connected to an air valve device disposed in the air horn upstream of a throttle valve, fuel supplying means adapted to supply the fuel at a constant supplying pressure to the fuel metering device, a constant differential pressure valve arranged to maintain a predetermined differential pressure across the fuel metering device, and an injector for discharging the metered fuel into the air horn in the vicinity of the throttle valve. The constant differential pressure valve includes a diaphragm type valve arranged to sense and amplify differential pressure across the fuel metering device, and a variable orifice type flow control device arranged to charge flow resistance of the metered fuel. The diaphragm type valve has a function to detect and amplify the differential pressure across the fuel metering device, while the pressure of the metered fuel is controlled by the variable orifice type flow control device which is actuated in response to the differential pressure sensed and amplified by the diaphragm type valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.