Fuel system and engine head assembly having double-walled fuel connector for cooling fuel return
US11708810B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2022 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | May 17, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2700/077
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine head assembly includes a double-walled fuel connector assembly in an engine head and forming a high-pressure fuel supply passage and a low-pressure fuel return passage. The engine head assembly also includes a fuel injector. A high-pressure fuel inlet path extends between a fuel inlet and spray orifices through an injector body in the fuel injector. A low-pressure cooling fuel outlet path extends between an injection control valve seat in the fuel injector and a cooling fuel outlet in a nozzle case of the fuel injector. Expelled cooling fuel is passed through the low-pressure fuel return passage in the double-walled fuel connector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.