Idle Speed Control


The following calculated run times are generated by Emtron that are Ide Speed Control related (to be further discussed more specifically): 


       Idle Target                 –         Current Target Idle Speed

       Idle Position                -        Current Live Idle Position

       Idle Target Error                         Error from Target Idle Speed 

       Idle Position Base                 Base Position of Idle Speed (%/Steps)

       Idle Position Flow Target                Flow Target when using Idle TMF mode (g/second)

       Throttle Area - Idle         –         Idle Throttle Area %  

       Pedal Position 1                –         Pedal Position 

       Idle Target Offsets (grp)        –         Offsets to Idle Target (RPM)

       Idle Comps (group)         –         Offsets to Idle Position (%/Steps)

       Idle Status                 –         Current status of Idle Speed Control

       Idle PID Status                -        Status of Idle Speed Control Closed Loop PID 

       Idle P, I, and D                -        Proportional, Integral, and Derivative live data from Closed Loop 

       Idle Feed Forward        -        Feed forward position for Idle Speed Closed Loop Control 


Idle Speed Control Function Setup


Emtron has eight methods of Idle Speed Control


  • Config, Function Setup, Idle Speed Control


2 Wire Idle Solenoid

       Configure one output for control

3 Wire Idle Solenoid

       Configure two outputs for control (Main/Slave)

Bipolar Stepper 

       Configure four outputs for control

Unipolar Stepper

       Configure four outputs for control

DBW 1

       No outputs, as the function takes over DBW positioning (raw position)

DBW 1+2

       No outputs, as the function takes over DBW 1+2 positioning (raw position)

DBW 1 TMF

       No outputs, as the function takes over DBW positioning (Throttle Mass Flow target)

DBW 1+2 TMF

       No outputs, as the function takes over DBW 1+2 positioning (Throttle Mass Flow target)



** Idle Throttle Mass Flow (TMF) Setup


Use the "Tuning View -> Engine Functions -> Throttle Body Model" menu to config the Throttle Mass Flow settings.  As TMF uses the pressure before and after the throttle plate, these pressure references in this menu must be setup correctly.  See Idle Speed Tuning