Miniaturized unit fuel injector
US4471909A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1981 |
| Grant date | Sep 18, 1984 |
| Priority date | — |
| Expiry date | Dec 18, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A unit injector (2) of the cam actuated, open nozzle type is disclosed in which an extremely compact injector body (4) has a minimum number of internal flow passages (66, 72) designed to reduce the complexity and cost of manufacture of the injector. The invention is characterized by an injector body (4) having an exterior shape designed to form a fuel supply flow path (22) and an isolated fuel drain flow path (24) between the exterior surface of the injector body (4) and the interior surface of the recess (6) in which the injector (2) is designed to be received. This arrangement allows a very simple pattern of radial passages (66, 72) to be formed in the injector body (4) even through the injector (2) is designed to provide scavenging fuel flow previously requiring a much more complex injector design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.