System and method for controlling flow of current in control valve winding
US5959825A · kind A · utility
26Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | May 29, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/2037
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control valve of an engine fuel system includes a valve member which is coupled to an armature and is moved to engage a seating when a winding is energized. The current flow in the winding is first allowed to rise to a peak value to initiate movement of the armature and valve member at which time the winding is disconnected from the supply. The decay of current in the winding is controlled using two rates of current decay to ensure that the valve member moves into engagement with the seating with the minimum of bounce.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.