Idling detection device
US5117682A · kind A · utility
33Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1991 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Feb 22, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H59/22
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In order to obviate rapid on/off hunting of an engine idle detection circuit which is operatively connected with a throttle valve position sensor, the detection circuit outputs an idle indication when the throttle valve opening is indicated as having fallen below a first predetermined level which is proximate the fully closed one. The idle indication is maintained until such time as the throttle valve is indicated as having opened beyond a second predetermined level which is slightly greater than the first one.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.