Cross section controlled multi-jet injection valve
US5282577A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1991 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | May 30, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86791
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cross-section controlled multi-jet injection valve for an air-distributor injection in air-compressing combustion engines is provided. In order to fulfill the more stringent requirements and standards for exhaust fume quality it is necessary to provide a homogenous fuel/air mixture. This is achieved with a valve needle which is provided with an axially and radially oriented key. Due to this key a favorable ratio of injection cross-section to circumference of the respective cross-section is achieved. Accordingly, a division of the injection jet and a mixing with air is provided. Due to correspondingly adjusted pressure springs the injection pressure at varying amounts of fuel to be injected is kept constant which furthermore provides a constant homogeneity of the fuel/air mixture. Thus an excellent exhaust fume quality is obtained for the entire performance range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.