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Bosch idle Valve Stepper
Posted: Thu Feb 06, 2014 4:26 am
by chris_crack
hi,
how do i have to setup the idle valve?
which frequency should i choose?
thx and greets from munich
Chris
Re: Bosch idle Valve Stepper
Posted: Thu Feb 06, 2014 5:47 am
by Matt Cramer
Stepper valves do not have a frequency. You would adjust the step size so that it is high enough the valve does not stick, but setting it too high will make it turn slowly. You will need to test this number for yourself.
Re: Bosch idle Valve Stepper
Posted: Thu Feb 06, 2014 5:49 am
by chris_crack
i heard 100hz would be a good value?
Re: Bosch idle Valve Stepper
Posted: Fri Feb 07, 2014 5:34 am
by Matt Cramer
First, you will need to determine if the valve is, in fact, a stepper. PWM valves use a frequency and have 2 or 3 wires; stepper valves do not and have 4 to 6 wires.
Re: Bosch idle Valve Stepper
Posted: Mon Feb 10, 2014 2:50 am
by chris_crack
its the 2 wire version
Re: Bosch idle Valve Stepper
Posted: Mon Feb 10, 2014 6:00 am
by Matt Cramer
Ok, that's not a stepper. Start with around 100 Hz.
Re: Bosch idle Valve Stepper
Posted: Mon Feb 10, 2014 8:01 am
by chris_crack
thanks
that means 100hz will keep the idle open? less will reduce the fow diameter?
Re: Bosch idle Valve Stepper
Posted: Mon Feb 10, 2014 11:12 am
by DonTZ125
The frequency is constant. The valve position is determined by the pulse width - thus, pulse width modulation.
Re: Bosch idle Valve Stepper
Posted: Mon Feb 10, 2014 11:30 pm
by chris_crack
oh, of course!
im sorry
