Internal combustion engine with pilot and main injection
US9708966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2016 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Jun 21, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine with at least two movable bodies each being sealingly and movably received within a respective internal cavity to define at least one combustion chamber of variable volume. A pilot fuel injector and a main fuel injector are provided for each movable body. A first chamber of a common rail is in fluid communication with each main fuel injector, and a second chamber of the common rail in fluid communication with each pilot fuel injector. A first metering or pressure regulating valve is in fluid communication with the first chamber. A second metering or pressure regulating valve provides selective fluid communication between the first and second chambers; the metering or pressure regulating valves are settable at different pressure values from one another. The movable bodies may be reciprocating pistons. A method of combusting fuel in an internal combustion engine is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.