Method for detecting opening of a throttle valve in a fully closed position in an internal combustion engine
US4515009A · kind A · utility
18Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1983 |
| Grant date | May 7, 1985 |
| Priority date | — |
| Expiry date | Jan 10, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/16
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for detecting the opening of a throttle valve in a fully closed position in an internal combustion engine. The opening of the fully closed throttle valve is detected at intervals of time corresponding to the pulse separation of a predetermined timing pulse signal. When it is determined that a detected value of the valve opening is smaller than a value of the valve opening previously detected and presently stored, and the detected value has kept the same value for a substantial period of time, the detected value is newly stored in place of the above presently stored value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.