Can anyone tell me if all elecontric throttle bodies tend to receive a PVM input or if some use a 0-5 voltage etc?

I basically need to open and shut one on a switch, I dont need any finer control than just "open" and "closed"

Any advice on how to do that would be appreciated

Thanks

 

pug 205 has this dont it?

 

MICROSWITCH!!
tabetha

 

How is a microswitch going to control an electronic throttle body?

 

xhip the ones ive seen work on voltage

 

Can you name a car that has one that opens and shuts the throttle in response to a flat voltage not a PVM signal then please MAD EVO 4

 

I can do but they are race cars

 

So not likely to be in my local breakers yard then?


Right, going back to the original question then please, which as far as I can see no one seemed to understand, I want to be able to flick a switch and it open a throttle body basically if people are in any doubt of what im trying to do

 

sorry mate

we use them on the F1 TAG TURBOS & also on the mclaren gtrs

 

Cheap and cheerful then

 

I'll find out for you chip.

 

 

could you rig up a standard cable throttle body with a solenoid valve with a long enough throw (or suitable mechanism to get the throw required) ?

 

Possibly, using a door lock solenoid or similar, but its pretty messy and id much sooner just use a complete unit.

 

Im still after any other info people have though, in case whatever alex finds out about the BMW specific stuff doesnt apply to others.

Any more info anyone?

 

BMW stuff looks like its just a simple voltage to make a DC motor use, no CAN or serial interfaces to get in the way.

So in theory its very simple to wack it from closed to open on command...

I'll keep digging and try and test the theory today.

Alex

 

Sorry misread the question, but a simple solenoid will do what you want.
What is the pull load ?
tabetha

 

steeper motor driver board,,, it isnt that simple just to open it!

pull actuator on the buttlefly is the easyest option

 

If its 3 wires it tends to be:

+VE
-VE
PWM

And the PVM % on time represents how open to make it.

 

then I need to operate the actuator electonically too, as I want this to open and shut relative to RPM/TPS, irrelevant of boost at the time, so even that isnt simple

I was thinking maybe I could pikey sometihng up with an indicator relay or something, lol

 

explain the idea dude,....

 

I need to open a throttle plate when I get over 25% throttle and am over 4K rpm essentially.

(actual numbers will change, thats my initial guesses)

 

will you have boost at this condition and above?

 

The exact numbers dont really matter mate, thats all going to be configurable anyway, its just how to get the thing to open im unsure of.

 

i only asked as we can use the boost to control things

 

No, I cant use boost, I want this to happen even when under vacuum at the time.

Ingenius little setup that though mate

 

HtH, well try, puts thinkin cap on again
some cars must of used electrically operated
actuator for choke, which! is the bummer.
RS Components will have a Elec actuator

 

actually it might work, potentially I will have about 4 psi when I want this to happen im guessing, that might be enough to trigger an actuator just about.

 

http://cgi.ebay.co.uk/2-Wire-Door-Lo...QQcmdZViewItem

 

Sadly I think the TB would just get "sucked open" in certain circumstances with something so weak on it.

 

as weak as the door actuator?
these don't move chip solid at either end of travel

 

normally on central locking you can just pull the button up and down by hand still too.

 

I know early Bosch ETMs require a PWM signal and an analogue backup/reference signal. One of these signals is sent over CAN bus from the ECM and the other direct from the accelerator pedal.

I could get you signal parameters tomorrow at work for a couple of variations of ETM however, i dont think there is simply an on/off option

 

that sounds promising as I could use the analogue side of it

do you know an example car done that way mate?

 

i have a 225bh audi tt (quite big) throttle body from when i was going to convert the cos to fly by wire. can have that for 50 quid i payed 70 for it and works of voltage for definate i can find out what wires do what exatly aswel

 

I work for Volvo myself and they either use Bosch or Marelli ETMs. I have seen the same ETMs fitted to loads of vehicles including Lambos and Ferraris. Some of the ETMs Volvo use are software controlled and will only work once the relevant software has been loaded into them. These are the ones that receive the signals over a CAN bus system. There are also some that just receive a voltage signal direct from the engine ECU to control throttle flap which I think are going to be more suitable to you.

I will try and get the pin specs for you tomorrow so you can see what the ETM's are seeing from the engine ECU and accelerator pedal inputs.

Have you thought about running a small electronic vacuum pump connected to a vacuumed controlled flap as found on most modern diesel intake systems? The vacuum/flap could be controlled from a vacuum solenoid which would give you the fully open and fully closed positions you are looking for.

 

whats it for exactly and why only completely open and closed?

 

i know that late astras use these, though unsure as to quite how they work possivly just voltage controlled though not sure

 

tbh the majority work of voltage and majority are made by bosch and 6 wires id say
12v
ov
2 x 0-5v?
moniter wires? i can find out for defo tomo what does what if anyones interested

 

Im using it precompressor, so it needs to be about 3" diameter ideally.

If it is, then sold