Distributed ignition method and apparatus for a combustion engine
US7007669B1 · kind B1 · utility
20Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2004 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Dec 3, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for operating an internal combustion engine is provided. The method comprises the steps of introducing a primary fuel into a main combustion chamber of the engine, introducing a pilot fuel into the main combustion chamber of the engine, determining an operating load of the engine, determining a desired spark plug ignition timing based on the engine operating load, and igniting the primary fuel and pilot fuel with a spark plug at the desired spark plug ignition timing. The method is characterized in that the octane number of the pilot fuel is lower than the octane number of the primary fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.