Apparatus and method for controlling the cone angle of an atomized spray from a low pressure fuel injector
US5383597A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1993 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Aug 6, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/19
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector for improving the atomization quality of fuel flowing into an internal combustion engine, includes a body having first and second turbulence cavities defined therein. First and second supply orifices in the body are coupled into their corresponding turbulence cavities for guiding the flow of fuel thereinto. First and second metering orifices in the body are coupled from corresponding first and second turbulence cavities for exhausting the atomized fuel therefrom in first and second fuel flows. One rim of each supply orifice is paired with a second rim of an adjacent metering orifice in order to produce a turbulence within the turbulence cavity. The metering orifice rim is spaced downstream by a distance y and laterally offset by a distance x from the supply orifice rim such that x/y is greater than 0.1. The fuel flowing from the first and second metering orifices includes lateral momentum components that cooperate to control the resultant cone angle of the fuel flowing from the injector. A plurality of hillocks are located within the turbulence cavity to enhance atomization. A method of operation for the apparatus is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.