Method of controlling idle speed for an internal combustion engine
US5517964A · kind A · utility
9Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1994 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | May 4, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of controlling idle speed of an internal combustion engine in an automotive vehicle is provided. The method includes the steps of calculating an acceleration error of the engine and determining whether the calculated acceleration error is greater than a predetermined deadband. The method also includes the steps of opening or closing an Automatic Idle Speed (AIS) stepper motor if the acceleration error is greater than the predetermined deadband and increasing or decreasing a spark advance if the acceleration error is not greater than the predetermined deadband.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.