초록 ▼

An apparatus for supplying compressed air to air operated elements of a locomotive includes an air compressor, an aftercooler coupled for receiving compressed air from the compressor, a cooling fan for blowing ambient air onto the aftercooler for reducing the temperature of the compressed air, where

An apparatus for supplying compressed air to air operated elements of a locomotive includes an air compressor, an aftercooler coupled for receiving compressed air from the compressor, a cooling fan for blowing ambient air onto the aftercooler for reducing the temperature of the compressed air, whereby moisture in the compressed air forms condensation which is discharged from the compressor during normal operation of the aftercooler. A bypass system shunts the compressed air from the compressor around the aftercooler when the condensation freezes in the aftercooler passages and blocks normal air flow. The bypass system includes an orifice of a size selected to create a pressure drop which is greater than a pressure drop across the aftercooler when air flow through the aftercooler is not inhibited by blockage whereby air flow from the compressor normally passes through the aftercooler and bypasses the bypass system.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for supplying compressed air to air operated equipment, the apparatus including an air compressor, an aftercooler coupled for receiving compressed air for the compressor, a cooling fan for blowing ambient air onto said aftercooler for reducing the temperature

[ What is claimed is:] [1.] An apparatus for supplying compressed air to air operated equipment, the apparatus including an air compressor, an aftercooler coupled for receiving compressed air for the compressor, a cooling fan for blowing ambient air onto said aftercooler for reducing the temperature of the compressed air whereby moisture in the compressed air forms condensation which is discharged therefrom during normal operation of the aftercooler and which condensation may freeze and block compressed air passages through the aftercooler when ambient air temperature falls below water freezing point, the apparatus including a bypass system for shunting the compressed air from the compressor around the aftercooler when the condensation freezes in the aftercooler passages and blocks air flow therethrough, said bypass system including a fixed orifice of a size selected to create a pressure drop thereacross which is greater than a pressure drop across the aftercooler when air flow through the aftercooler is not inhibited by blockage of the aftercooler passages whereby air flow from the compressor normally passes through the aftercooler and bypasses the bypass system.