Subpage of Boost Control Menu

Boost/Idle/Lambda settings

• The Round Unit has a High Power control output (named Boost solenoid).
• The output can use for several control feature: Boost control (2 adc input available),Idle control, Lambda control or EGT control.
• The output is on the DSub15 connector pin 12. It can pull down to GND.
• All control method has a PID controller a reference and a target.
• The Boost output PWM period is 52ms (19Hz).
• The PID controller
  • The PID controls the output to set the system to the target point.
  • The output PWM value = reference curve(RPM) + P term + I term + D term
    • P term(boost out): ( target value - measured value) * KP / 163.84
    • P term(pwm0,4 out): ( target value - measured value) * KP / 655.36
    • I term: Boost integral * KI /10.24 (Boost integral increments by (target value - measured value) / 16 in every ms)
    • D term: (Previous measued value - actual measured value) * KD / 8192 (measurement are in every ms)
    • Integral limit : maximum of boost integral change
• The reference
  
  • It is the base PWM output when the measured value equals to the target.
  • If enabled RPM dependent curve can use.
• The target
  • The target is the value which needed in the system. (For example: 200Kpa)
  • It is different in different method, see at the target curves.
  • If enabled RPM dependent curve can use.
• Special note to Boost target:
  • The Boost method use the analog input as a MAP sensor.
  • Before use the control function, calibrate your Analog in to show value in Kpa ( Analog input settings).
• PWM 0 and PWM 4 outputs only on Round V2
  • Round V2 has 3 pwm outputs:
    • Boost output: same as Round V1 on Dsub15 pin 12
    • PWM 0 output: on Dsub15 pin2
    • PWM 4 output: on Dsub15 pin3
  • Functionality is the same as Boost control above with configurable period.
  • Only one output can use the RPM dependent curve at the same time.