Method of operating a dual fuel internal
US6550430B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Feb 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The combustion chamber of a high speed, two stroke or four stroke, internal combustion engine is provided with a generally homogeneous mixture of combustion air and two types of fuel, one having a high resistance to ignition (high octane), the other having a low resistance to ignition (high cetane), the fuels being supplied in a ratio which optimizes combustion for varying operating conditions. A high cetane fuel may also be injected into the combustion chamber to initiate the combustion in the form of rapidly propagating, multiple flame fronts. Moderate combustion pressures, rates of combustion pressure rise and low levels of combustion knock are generated. High compression pressures and little or no combustion air throttling are employed allowing high levels of thermal efficiency, fuel efficiency, output power and low levels of exhaust emissions. Low cost engine applications employ slightly lower compression pressures and an electrical spark to initiate combustion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.