Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Eric C. Wright0
Date of Patent
October 25, 2016
Patent Application Number
14865902
Date Filed
September 25, 2015
Patent Citations Received
Patent Primary Examiner
Patent 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.
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