EVAP

EVAP

EVAP

The Evaporative Emissions Control (EVAP) function allows for control of a purge control solenoid, so that a controlled amount of vapour from the fuel tank can be supplied to the engine intake instead of venting harmful emissions into the atmosphere.  The solenoid is controlled by a PMW duty signal.



Frequency - This sets the frequency of the signal to the EVAP Solenoid. Typically a very low frequency is used for EVAP solenoids, typically 2 to 20Hz, to allow fine control between closed and small flow amounts. 

    • Related Articles

    • EVAP Wiring

      Wiring This node allows you to assign the output for the EVAP Solenoid. This will typically be a DPO.

    • Generic Correction

      EVAP Generic Correction Table This table allows for any generic correction to be applied to the EVAP Solenoid duty cycle (eg. limiting duty with TPS)  2D mapping is available and any channel can be used as the axis.

    • Duty Cycle (O2 Inactive)

      EVAP O2 Inactive Duty Cycle Table This table is active when there is no closed loop control of the fuel system in active use. It setsthe duty cycle for the EVAP Solenoid under these conditions. It is normal to use lower duty values in the O2 Inactive ...

    • Duty Cycle (O2 Active)

      EVAP O2 Active Duty Cycle Table This table is active only when the O2 Control function is enabled and the system is actively in closed loop control. It controls the Duty Cycle of the EVAP Solenoid under these conditions. Under these conditions the O2 ...

    • Evaporative Emissions Control

      The Evaporative Emissions Control (EVAP) function allows for control of a purge control solenoid, so that a controlled amount of vapour from the fuel tank can be supplied to the engine intake instead of venting harmful emissions into the atmosphere. ...