ever driven electronically to the maximum valve position of
Driving the valve to 100% will cause increased wear on
components such as the electronic motor as it tries to
force the valve to completely open.
Due to the nature of the poppet valve design, the flow
characteristics are nonlinear. In some cases, it may be
advantages to correlate the linear sensor output to match the flow
of the valve. The following plot compares valve position with
Adjust the calibration to allow plenty of overshoot to the end stops
of the valve, recalibrate as above once you have good control of
valve flow. A 3 order polynomial is provided to relate sensor
position to flow. Note due to the design of the wastegate, the
valve is on a preloaded mechanism to minimise binding at the
end stops, this results in the sensor reading past the home
positions and for this reason the calibration sequence with low
force is essential.
PLEASE NOTE that temperatures over 180 degC (356degF)
will create an error in the temperature sensor readings.
Therefore, the internal temperature is rated to a temperature of
sufficient alarms to monitor this.
50degC (302degF) it is recommended to log and place
PLEASE NOTE When driving the electronic actuator, the current
should be limit to no more than 20 amps at a period of 1 second
and 5 amps for more than 5 seconds.
Follow your ECU manufacturers guidelines for tuning wastegate
servo control. Ensure dead band is set to a reasonable level to
not have the output active when not needed.
y = 0.5596x3 – 1.8306x2+ 2.2847x – 0.0189
R = 0.9989
ADVANCED FEATURES ON THE GEN V WASTEGATE
screwdriver, pry this tab out of the groove allowing the collar to
Re-Orientation of the Actuator
Using the small end of the supplied collar tool undo the slave
collar 1 complete revolution (anti-clockwise as viewed from the
bottom). One tab on the heatshield at the back of the wastegate
is folded up to locate on the actuator, rotate the actuator to
desired location ensuring the folded tab aligns with a groove in
the bottom of the actuator. It is possible to fold down this tab and
use another if the actuator cannot be positioned correctly on the
Turbosmart does NOT recommend altering to position of the
actuator once the wastegate has been used.
It is recommended that the electronic actuator be clocked
without a valve seat installed to prevent damage to the valve.
Turbosmart provide the Gen V eWastegate in a set orientation,
in some applications it may be advantages to clock the actuator
to allow clearance for fittings and wiring.
Locate the slave collar between the electronic actuator and the
body underneath the heatshield, A tab on the heatshield will be
folded down into a groove on this collar. Using a flat blade