Fuel injector with controlled high pressure fuel passage
US6868831B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2001 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Aug 26, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M63/0225
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A unit fuel injector, the injector internally preparing fuel during an injection event at a pressure sufficient for injection by means of an intensifier driven by a pressurized non-fuel actuating fluid selectively ported to the intensifier, includes a selectively actuatable controller interposed in a fuel passage, the fuel passage effecting fluid communication between an intensifier fuel chamber and a needle valve, the controller being shiftable between an open and a closed disposition for selectively opening and closing the fuel passage during the injection event A control apparatus and a method of injection timing control are further included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.