AIR SUSPENSION CONTROL DEVICE FOR IMPROVING BUFFER PERFORMANCE AGAINST PITCHING/BOUND GENERATED IN TRAVELING A VEHICLE BY A SIMPLE MECHANICAL SENSOR AND A SWITCH STRUCTURE

摘要

PURPOSE: An air suspension control device is provided to cut down the cost by removing expensive sensors and an ECU(Electronic Control Unit) and to secure excellent pitching/bound reduction performance by rotating upper and lower caps of upper and lower sensors. CONSTITUTION: An air suspension control device is composed of an air spring(20) installed between a vehicle body and an axle; upper and lower sensing units(30) mounted at the axle to detect a vertical motion of the axle; a main air tank(40) for supplying the compressed air to the air spring; a leveling valve(45) disposed at a main line formed between the main air tank and the air spring to regulate pressure in the air spring; a sub air tank(50) for feeding the air with pressure lower than the air pressure of the air spring to the air spring; and a switch valve(60) arranged at a joint spot of a sub line connected from the air spring and the sub air tank to the air spring to regulate the supply of the compressed air according to the result of the upper and lower sensing units.