Flow control equipment for an internal combustion engine
US5855195A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 26, 1997 |
| Grant date | Jan 5, 1999 |
| Priority date | — |
| Expiry date | Jun 26, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A flow controller in a flow control valve for an internal combustion engine. When the flow control valve is operated in a closing direction upon the occurrence of an abnormal state in the flow control valve such as sticking, resonance frequency vibration is applied to the valve so that a sliding resistance force of a screw mechanism can be lowered and the valve can be closed. To prevent problems with the flow control valve such as being out-of-control, a setting time is added to a drive period according to the variation in the motor torque. Because the flow control valve can be reliably closed, and an out-of-control condition of the flow control valve can be prevented, an incorrect operation of the engine can be avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.