Dual-fuel diesel engine with cylinder fueling control of gaseous fueling at less than full loads
US9803571B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2016 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jan 23, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method, used with dual-fuel engine, of controlling the amount of gaseous fuel delivered to the engine. At operating conditions that result in an equivalence ratio below a predetermined threshold (which typically occur at mid or part loads), it is determined whether better performance and/or lower emissions can be achieved by reducing gaseous fuel to some cylinders and increasing gaseous fuel to others. Typically, the gaseous fuel is reduced to zero to a number of cylinders and increased to others, with the increase resulting in an equivalence ratio that will provide improved emissions and efficiency and the desired engine output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.