Wastegate frequency
Moderators:R!C0, JonMan, RickS
Morning guys.
An EVO i working on never had ecu controlled boost.
I am converting the stock boost control valve to a 3 sport solenoid and connecting it to the GeMs. I need to use a frequency between 20 and 33mhz.
The wastegate period is set at 150us, how do i convert that to frequency.
I got 1 Hz = 1000000 µs but that really does not seem right.
An EVO i working on never had ecu controlled boost.
I am converting the stock boost control valve to a 3 sport solenoid and connecting it to the GeMs. I need to use a frequency between 20 and 33mhz.
The wastegate period is set at 150us, how do i convert that to frequency.
I got 1 Hz = 1000000 µs but that really does not seem right.
Re: Wastegate frequency
150μs = 6.666667 kHz
Re: Wastegate frequency
so a 30hz PWM freq is 30000μs
Will the GeMs support this ?
Will the GeMs support this ?
Re: Wastegate frequency
I'll certainly check for you.
Please let me know what version of firmware the ECU has installed and I'll check the archive. (Different firmware, possibly different specification).
A look at the data sheet for the valve would help also...
BR, RickS
Please let me know what version of firmware the ECU has installed and I'll check the archive. (Different firmware, possibly different specification).
A look at the data sheet for the valve would help also...
BR, RickS
Re: Wastegate frequency
The ecu is a Lancer evo 6 rally implant. firmware G2.41
The valve is a common 3 port MAC valve. 19 to 33mhz is common control frequency
The valve is a common 3 port MAC valve. 19 to 33mhz is common control frequency
Re: Wastegate frequency
OK...
With the G2.41, you have an option 'WG Period'.
This can be set from 0.00μS to 510.00μS.
You mention 19-33'mHz'. To take 30mHz as an example, that would convert to 0.03333μS, which the ECU can not do.
Most solenoid valves operate operate between 15-50Hz, not mHz, (25-50 times a second). I could be wrong with yours, so please check and confirm.
A value for WG Period of 130-150μS should be OK for your use, if the above is correct.
With the G2.41, you have an option 'WG Period'.
This can be set from 0.00μS to 510.00μS.
You mention 19-33'mHz'. To take 30mHz as an example, that would convert to 0.03333μS, which the ECU can not do.
Most solenoid valves operate operate between 15-50Hz, not mHz, (25-50 times a second). I could be wrong with yours, so please check and confirm.
A value for WG Period of 130-150μS should be OK for your use, if the above is correct.
Re: Wastegate frequency
Force of habit to put MHZ from my line of work (typing muscle memory)
the valve is 30HZ (feel a little embarrassed),
the valve is 30HZ (feel a little embarrassed),
Re: Wastegate frequency
No need.
Easily done...
Easily done...