Method of adaptively controlling individual cylinder fuel injection quantities in electronically controlled diesel engine and device therefor
US4590907A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1985 |
| Grant date | May 27, 1986 |
| Priority date | — |
| Expiry date | Feb 22, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In effecting individual cylinder fuel injection control in an electronically controlled diesel engine, wherein rpm variations with every explosion cylinder are detected and compared with one another, the increase or decrease in the fuel injection quantity with every cylinder is learned until rpm variations of the respective cylinders become uniform, and a fuel injection quantity control actuator is controlled with every cylinder, so that engine vibrations due to a dispersion in fuel injection quantity between the cylinders can be controlled, an adaptive correction quantity is determined in accordance with an rpm variation deviation obtained from a difference between a mean rpm variation and rpm variations of the respective cylinders, and the engine temperature or the fuel temperature, and the fuel injection quantity control actuator is controlled with every cylinder in accordance with the adaptive correction quantity, to thereby prevent the divergence of the correction quantity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.