Learning control method for an internal combustion engine and apparatus therefor
US5065726A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1990 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Oct 2, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/2454
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for learning control and precontrol for adjusting the lambda value for the air/fuel mixture to be metered to an internal combustion engine 11 compares a large comparison value with a small comparison value with the large comparison value being formed by averaging of adaptation factors for large precontrol values and the small comparison value being formed by averaging of adaptation factors for small precontrol values. Whenever the large comparison value is smaller than the small comparison value, a global summand is incremented by a correction value, otherwise it is decremented. An apparatus operating according to this method has the advantage that disturbing influences which act additively on the injection time are compensated with great accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.