Method and circuit for actively cleaning electrohydraulic valves in a hydraulic control valve circuit
US6170506A · kind A · utility
18Cited by
12References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Feb 8, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4245
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for cleaning a solenoid-operated regulator valve wherein command current applied to a solenoid actuator establishes a defined response of a valve. Cleaning current pulses applied to the solenoid establish a response that does not interfere with the effectiveness of the valve function. The pulse width, pulse amplitude, pulse direction and pulse period are determined by the degree of contamination of the valve environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.