Idling speed control system for engine
US5081973A · kind A · utility
11Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1990 |
| Grant date | Jan 21, 1992 |
| Priority date | — |
| Expiry date | Nov 29, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D31/005
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An idling speed control system for an engine controls the amount of intake air during idling according to external load acting on the engine and feedback-controls the ignition timing by the use of a predetermined control variable so that the engine speed during idling converges on a target idling speed. The predetermined control variable is changed according to the amount of intake air charged to the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.