Control of an air dryer drain valve cycle
US9475476B1 · kind B1 · utility
4Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/4566
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for variably controlling the purge cycle of a locomotive air supply system air dryer pre-filtration state. A sensor in the air inlet of the air dryer provides temperature information to a controller, which calculates an appropriate purge cycle time based on the saturation partial pressure of water vapor at the actual temperature of the air entering the air dryer and the operates the drain valve according to the particular purse cycle time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.