Fuel-actuated fuel injector having cooling fuel circuit and method
US11840993B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2023 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | Feb 1, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M55/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector assembly for a fuel-actuated fuel injector includes an injector body, and an injection control valve assembly. The injector body includes therein a low-pressure fuel passage extending from a clamping face to an armature cavity to convey spent actuating fuel to the armature cavity. The fuel injector assembly also includes a flushing drain formed by the injector body and fluidly connected to at least one of a valve pin bore in the injector body or the armature cavity. The flushing drain forms, together with the low-pressure fuel passage and the armature cavity, a cooling circuit for the spent actuating fuel. The flushing drain extends to a drain opening formed in an outer body surface of the injector body. Related methodology is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.