Fuel injection system in particular unit fuel injector, for internal combustion engines
US5056488A · kind A · utility
27Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Apr 13, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection system for internal combustion engines, having a pump chamber defined by the pump piston and a pressure chamber adapted to communicate with the injection nozzle; and further including an intermediate piston disposed between the two work chambers, in which during the compression stroke of the intermediate piston a throttle conduit which branches off from the pump chamber can be opened, in order to allow some of the fluid to flow out of the pump chamber while leaving the injection quantity located in the pressure chamber unchanged, to thereby attain a lengthening of the injection duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.