Patent ID: 6170610
Filing Date: 2001-01-09
Classification: B61K

Abstract:
In a railroad locomotive of the type having air brakes and a nozzle for applying a lubricant to the top of a rail behind the last axle of the locomotive, a method of stopping lubricant application when the air brakes are applied and resuming lubricant application when the air brakes are released, comprising the steps of:measuring the pressure in the air brake line;stopping lubricant application when the brake line pressure drops by a predefined value .DELTA.p.sub.1 which is larger than the normal fluctuations of pressure in the brake line;after stopping lubricant flow, treating continued descent in the air brake pressure as continued brake application;resuming lubricant application only when the air brake line pressure rises above a predefined value .DELTA.p.sub.2 which is larger than the normal fluctuations of pressure in the brake line.