Approach for reducing injector fouling and thermal degradation for a multi-injector engine system
US7681554B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 11, 2007 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Aug 11, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
As one embodiment, a method of operating an engine of a vehicle is provided wherein the engine has a variable engine output. The method comprises during a first engine output, delivering a first fuel to at least a cylinder of the engine via a first injector and directly injecting a second fuel directly into said cylinder via a second injector; and during a second engine output lower than said first engine output, delivering said first fuel to said at least a cylinder of the engine via said first injector and directly injecting at least a purging substance via said second injector based on an idle period since a previous injection by said second injector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.