AIR SUSPENSION SYSTEM


  1. OUTLINE


    1. An electronically controlled air suspension system is used.

    2. The electronically controlled air suspension system uses a pneumatic cylinder with shock absorber assembly, which has an air spring structure, to smooth shocks from the road surface and maintain the vehicle height, achieving superior stability. In addition, the vehicle height is decreased at high speeds to ensure fuel efficiency by improving its aerodynamic characteristics and driving stability by lowering the center of gravity. Furthermore, the vehicle height is increased when entering and exiting the vehicle, achieving superior accessibility.

    3. The following vehicle height controls are provided for the electronically controlled air suspension system.

      Access Mode Control Determines whether a passenger is entering or exiting, and increases the vehicle height when entering and exiting the vehicle.
      Auto Leveling Control Maintains the vehicle height at a constant level regardless of the total weight of passengers and luggage.
      Vehicle Speed-sensitive Control Detects the vehicle speed and decreases the vehicle height at high speeds.

    4. A vehicle height adjustment function is used. The vehicle height can be increased by operating the vehicle height adjustment switch when the ground clearance needs to be ensured.

  2. MAIN FEATURES


    1. A closed type air suspension system is used so that the vehicle can quickly change the vehicle height when a vehicle height increase operation is performed. As a result, the vehicle height quickly increases when the access mode control is in operation, achieving stress-free and smooth access.

    2. Since open type air suspension systems compress the air that is drawn in using a compressor motor and supply it to a pneumatic cylinder with shock absorber assembly when vehicle height increase operations are performed, they slowly adjust the vehicle height. However, closed type air suspension systems supply high-pressure compressed air from a pneumatic tank assembly to a pneumatic cylinder with shock absorber assembly, allowing them to more quickly adjust the vehicle height.

      Figure 1. Closed Type Air Suspension System

      B003IOVC01
      *1 No. 3 Height Control Valve Sub-assembly *2 Height Control Pressure Sensor
      *3 Pneumatic Tank Assembly *4 Compressor Motor
      *5 Dryer *6 Height Control Exhaust Valve
      *7 No. 1 and No. 2 Height Control Valve Sub-assembly *8 Pneumatic Cylinder with Shock Absorber Assembly
      *a Intake and Exhaust between Pneumatic Tank Assembly and Pneumatic Cylinder Assembly *b Intake and Exhaust between Pneumatic Tank Assembly and Outside Air during Inner Pressure Adjustment
      *c Outside Air *d Vehicle Height Adjustment

      Figure 2. Open Type Air Suspension System

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      *1 Dryer *2 Compressor Motor
      *3 Height Control Exhaust Valve *4 No. 1 and No. 2 Height Control Valve Sub-assembly
      *5 Pneumatic Cylinder with Shock Absorber Assembly - -
      *a Intake and Exhaust between Pneumatic Cylinder Assembly and Outside Air *b Outside Air
      *c Vehicle Height Adjustment - -