ELECTRIC POWER CONTROL SYSTEM


  1. SYSTEM ACTIVATION TIMING CONTROL


    1. This control controls the air injection system, hydraulic brake booster and active height control suspension. It adjusts the activation timing of each system to prevent systems which use a relatively high amount of electrical power from activating simultaneously and enables those systems to activate efficiently.

    2. If the ECM receives the brake booster pump assembly activation notification signal from the skid control ECU with actuator when the engine is started, the ECM advances the activation timing of the air pump bank 1 so that the brake booster pump assembly and air pump bank 1 are not activated simultaneously.

    3. The suspension control ECU controls the height control pump & motor assembly so that the height control pump & motor assembly is not activated while activation notification signals are being received from the ECM and skid control ECU with actuator. When a predetermined time has elapsed since receiving the activation notification signals, the suspension control ECU transmits the height control pump & motor activation notification signals to the ECM and skid control ECU with actuator, and activates the height control pump & motor assembly. As a result, the activation timing of each system is appropriately controlled and power supply voltage decrease is prevented.

      Figure 1. System Diagram

      A01W5Y4E01

      Figure 2. Timing Chart

      A01W5S6E01

  2. LOAD CONTROL


    1. When the engine is started, the ECM transmits the load control request signal to the air conditioning amplifier assembly. Upon receiving this signal, the air conditioning amplifier assembly suspends the relevant system operations for a few seconds. As a result, when coupled with the system activation timing control, this control prevents the power supply voltage from decreasing excessively when the engine is started and provides a stable power supply.

      Figure 3. System Diagram

      A01W61NE02
      *1 CAN (V Bus)
      *2 Air Conditioning Amplifier Assembly
      *3 Various Electrical Loads
      *4 Load Control Request Signal