GovernorĪir compressors are designed to run whenever the engine is running.
All components used to attach and power the air compressor must be kept in good condition to ensure a constant supply of compressed air. The brackets and fasteners must be kept secure so that the air compressor can work properly. The actual air brake system pressure range must never be lower than 552 kPa (80 psi) or higher than 1000 kPa (145 psi).Īir compressors are generally powered directly by the vehicle’s engine or by using belts and pulleys and can be mounted either directly on the engine or by brackets and fasteners. Abnormal pressure readings should always be verified by a technician using an accurate gauge.
#COMPRESSED AIR TANK FORCE DRIVERS#
Drivers should know the normal pressure range of the vehicle they operate and should report any abnormal condition. Normal air brake system pressure range is around 690 to 828 kPa (100 to 120 psi). Note: Cut-out pressure is normally 138 to 173 kPa (20 to 25 psi) above the cut-in pressure. The normal pressure range of an air brake system is determined by the points where the air compressor is turned on (cut-in pressure) and turned off (cut-out pressure). This compressed air is a form of stored energy.Īir pressure is usually measured in kiloPascals (kPa) or pounds per square inch (psi). Powered by the vehicle’s engine, the air compressor draws in air at normal pressure and forces it into a much smaller space, causing the pressure of the air to increase. Air compressorĪn air compressor produces air for the brake system. Note: There is a circuit diagram of the air-supply subsystem here. This chapter explains the operation and function of the air-supply subsystem, which produces, stores and manages the compressed air used by the brake system. Air brake systems are made up of several subsystems.
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