Fuel injector check valve
US7124966B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2004 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Aug 30, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/90
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A high pressure unit fuel injector includes a member with a fuel delivery opening to be intermittently supplied with high pressure fuel and a valve seat encircling the fuel delivery opening. A valve cage includes a check-valve chamber adjacent the valve seat. The chamber includes an annular ledge facing the valve seat and an inwardly facing wall surrounding the ledge. A disk is located within the chamber and has opposite first and second faces alternately seatable against the valve seat and the ledge respectively. The disk has a plurality of openings between the first and second faces and a circular-shaped groove formed in the first face about a center of the disk. The groove intersects the plurality of openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.