Agricultural work vehicle having air supply device

An agricultural work vehicle having an air supply device comprising:

• an air compressor configured to compress air;
• an air tank configured to store the air compressed by the air compressor;
• a pressure sensor configured to measure a pressure of the air stored in the air tank or measure atmospheric pressure;
• a controller configured to stop an operation of the air compressor when the measured pressure exceeds a first reference value;
• and
• an air pressure regulator configured to decompress air in an air pressure circuit system by discharging the air to the outside when the pressure of the air stored in the air tank exceeds a second reference value,
• wherein the air pressure regulator comprises a decompression valve configured to reduce a pressure in the air pressure circuit system, the air pressure regulator has a measurement line configured to measure the pressure of the air stored in the air tank or measure the atmospheric pressure, and the measurement line is provided at a point of the decompression valve at which the pressure of the air stored in the air tank is measured.