Method and apparatus for controlling the idling rotational speed of an internal combustion engine
US4440128A · kind A · utility
3Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1982 |
| Grant date | Apr 3, 1984 |
| Priority date | — |
| Expiry date | Jan 18, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2011/103
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The idle air flow is adjusted by a step motor depending upon a drive signal applied to the step motor, so as to control the idling rotational speed of the engine. When the engine is under a certain operating condition during cranking, in which condition the step motor cannot be normally actuated, the drive signal is inhibited from being applied to the step motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.