Fuel injection valve for air-compressing internal combustion engines with fuel injection
US4911366A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 1989 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | May 15, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection valve for air-compressing internal combustion engines comprises a nozzle holder, a nozzle body and a pintle, which is operable by the application of fuel pressure against the force of a closing spring, which is accommodated in a spring chamber of the nozzle holder. The pintle cooperates with a damper, which comprises a fuel-filled damper chamber, which opens into a constricted passage. A separate damper piston is interposed between the pintle and the damper chamber and enters the damper chamber and is non-positively connected to the pintle. To provide an inexpensive and highly effective damper, either the damper chamber is formed in an adapter, which defines that end of the spring chamber of the nozzle holder which is adjacent to the pintle, the adapter contains the damper piston, which is used to transmit force between the closing spring and the pintle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.