M1 DBW - Throttle Pedal Voltage Filter

[Exigeman]

Hi
We have been chasing a "lurching/kangarooing" issue at 2-3K with timing and fuelling but cannot overcome it.
Setting the Throttle Pedal Main Voltage filter to 40ms improves it and setting to 80ms completely solves it.
I understand this setting is not ideal ? What issue can be introduced ?
Is this an fault probably with the sensor itself at that pedal position (Bosch cylindrical type) or can something else influence this ?
Many thanks

[Stephen Dean]

Hi,

Do you have any logging showing this occuring?

[Exigeman]

Thanks Stephen for the answers on the filter .. now another question following that.

Current setup has one pot decreasing in voltage while the other increases, which I understand is the correct setup.
However the increasing channel is not returning the same voltage as the decreasing and that is creating the tracking error as I cannot get full travel on the pot.
I have checked my two spare pots and they both have same characteristic, so is it ok to switch the output around and have both channels decreasing ?

[Exigeman]

Solved by adjusting the pedal stops and getting enough voltage to avoid errors

[Stephen Dean]

Hi,

There is no requirement for the channels to be opposing, a fair number of OEM DBW pedals and Servos have the channels as both rising, sometimes with an offset between the two, or with a different slope between the Main and the Tracking.