Method of controlling individual cylinder fuel injection quantities in electronically controlled diesel engine and device therefor
US4561397A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1985 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Feb 14, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/1015
- 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, and a fuel injection quantity control actuator is controlled with every cylinder so as to make the rpm variations of respective cylinders uniform, so that engine vibrations due to a dispersion in fuel injection quantity between the cylinders can be reduced, the individual cylinder correction quantity of the fuel injection quantity control actuator is determined in accordance with a deviation in the rpm variation obtained from a difference between a mean rpm variation and rpm variations of respective cylinders, the upper and lower limit guard values of the individual cylinder correction quantity, the values being variable in association with a range, which the fuel injection quantity control actuator can follow up, is determined in accordance with engine temperature or fuel temperature, and the fuel injection quantity control actuator is controlled with every cylinder in accordance with the individual cylinder correction quantity having imposed thereon restrictions by the upper and lowe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.