Fuel injection apparatus and system
US4725041A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1986 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Dec 15, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/90
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel metering apparatus is shown as having a throttle body with an induction passage therethrough and a throttle valve for controlling flow through the induction passage, a fuel-air mixture discharge member is situated generally in the induction passage downstream of the throttle valve, an air passage communicates between a source of air and the fuel-air mixture discharge member, the air passage is shown as also including a flow restrictor therein which provides for sonic flow therethrough, and a fuel metering valving assembly having a ball valve member is effective for metering liquid fuel as at a superatmospheric pressure and delivering such metered liquid fuel as into the air passage upstream of the flow restrictor thereby causing the thusly metered liquid fuel and air to pass through the sonic flow restrictor before being discharged into the induction passage by the fuel-air mixture discharge member, the ball valve member has a flattened surface against which an armature of a solenoid assembly operatively engages and through the action of at least one resilient member urges the ball valve member toward a seated condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.