Gaseous and liquid fuel injector with a two way hydraulic fluid control valve
US6336598B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulically actuated dual fuel injector separately injects two fuels into a combustion chamber of an internal combustion engine. In particular, the two fuels may be controlled quantities of a first liquid fuel and a second gaseous fuel that are used to fuel a diesel engine. The injector preferably begins injecting the first fuel sequentially before beginning to inject the second fuel. The dual fuel injector comprises: (a) an injector body; (b) a hydraulic fluid inlet port formed in the injector body for enabling pressurized hydraulic fluid from a hydraulic fluid source to be introduced into the interior of the injector body, said hydraulic fluid being of sufficient pressure to maintain sealing and to prevent leakage of the gaseous fuel into the hydraulic fluid; (c) a first fuel inlet port formed in the injector body for enabling a first fuel to be introduced into the interior of the injector body; (d) a first injection valve disposed within the injector body fluidly connected to the first fuel inlet port for controlling injection of the first fuel from the injector through a first fuel ejection port; (e) a second inlet port formed in the injector body for enabling a second fuel…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.