Lambda Control - Wide Band

Lambda Control - Wideband

All Emtron ECU’s can support closed loop wideband lambda control using various methods.  KV series ECUs have two internal wideband control systems that allow the user to wire lambda sensors directly to the ECU.  In addition to this, Emtron ELC (Emtron Lambda to CAN) devices may be connected over CAN networking (included in all Emtron ECUs), and even an external Lambda controller that has a standard AV output can be used.  

Hardware specification 

  • SL4/SL8     -     No internal lambda control.  Use ELC, standard AV, user CAN
  • KV8/12/16     -     Dual internal lambda control, and/or ELC, standard AV, user CAN

Select the control system and appropriate outputs: 

Config View -> Function Setup -> Engine Functions -> Closed Loop Lambda Control 

OFF = Function is switched off and the selected output channels are deallocated.

ON = Function is switched on

Function Type

  • Wideband Control – Lambda 1 Channel = Single Lambda input using Lambda Channel 1
  • Wideband Control – Lambda 2 Channel = Single Lambda input using Lambda Channel 2
  • Wideband Dual Control (La1 + La2) = Dual Lambda inputs using Lambda Channel 1 and 2
  • Narrowband Control – Sensor 1 = Single narrowband input on channel 1(See Narrowband Lambda)
  • Narrowband Control – Sensor 2 = Single narrowband input on channel 2 (See Narrowband Lambda)
  • Dual Narrowband Control (Sensor 1+2) = Dual narrowband input on both channels (See Narrowband Lambda)

Input Channel Selection

Emtron Lambda inputs must be defined under input selection.  

Config View -> Inputs -> Input Pin Setup ->Engine -> 

Lambda 1 – Select input

Lambda 2 – Select input 

Input selection is as follows 

  • Internal Lambda 1    -     Uses internal lambda controller #1 (KV series only)
  • Internal Lambda 2    -     Uses internal lambda controller #2 (KV series only)
  • CAN ELC #x Ch-x    -     Defines which ELC channel to use (See Emtron ELC)
  • ANV x        -    Define and calibrate as standard AV input 
  • CAN Lambda x     -    Define input as user received CAN input (see CAN Bus)
  • CAN NTK EL-4 x    -    For use with NTL Lambda Controller EL-4

Input options

  • Pressure Correction    -    Lambda sensors can have EMAP compensation enabled (see Exhaust Back Pressure) 
  • Calibration Type     -    Select Custom for configuring ANV input, or Predefined if using internal Lambda controller, 

                                                                  Emtron ELC, or NTK EL-4

  • Predefined Calibration    -    Select LSU internal or NTK EL-4