Fuel injection device for an internal combustion engine having preinjection and main injection air compression and self-ignition
US4903896A · kind A · utility
8Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1989 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Apr 6, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/505
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a fuel injection device for an air-compressing fuel-injected internal combustion engine, which has an injection line leading from a pump element of high pressure injection pump to a bifurcation branch leading to a main injection nozzle and a preinjection nozzle. A nozzle needle of the preinjection nozzle opens counter to the direction of flow of the fuel and has a body designed with a stepped piston which, in the case of a closure initiating fuel pressure lying above an opening fuel pressure of the nozzle needle, moves the nozzle into a position to end preinjection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.