Method and apparatus for controlling motor drive type throttle valve
US6874471B2 · kind B2 · utility
10Cited by
1References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 18, 2002 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Oct 28, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/1422
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
When the position of a throttle valve approaches a target value, an integration calculation of position control is stopped. When a deviation from the target value increases, the integration calculation is restarted. If an integration value includes no frictional amount, a motor output in which a motor and a spring are matched is set synchronously with a change in target value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.