Chip

iTrader: (3)

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

Spiky

iTrader: (1)

pug 205 has this dont it?

tabetha

MICROSWITCH!!
tabetha

Chip

iTrader: (3)

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

MAD EVO 4

xhip the ones ive seen work on voltage

Chip

iTrader: (3)

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

MAD EVO 4

I can do but they are race cars

Chip

iTrader: (3)

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

MAD EVO 4

sorry mate

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

Chip

iTrader: (3)

Cheap and cheerful then

AlexF

I'll find out for you chip.

Chip

iTrader: (3)

jon@work

iTrader: (5)

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) ?

Chip

iTrader: (3)

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

Chip

iTrader: (3)

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?

AlexF

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

tabetha

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

GARETH T

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

pull actuator on the buttlefly is the easyest option

Chip

iTrader: (3)

If its 3 wires it tends to be:

+VE
-VE
PWM

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

Chip

iTrader: (3)

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

GARETH T

explain the idea dude,....

Chip

iTrader: (3)

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)

leecavturbo

will you have boost at this condition and above?

Chip

iTrader: (3)

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.

leecavturbo

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

Chip

iTrader: (3)

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

Ingenius little setup that though mate

leecavturbo

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

Chip

iTrader: (3)

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.

leecavturbo

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

Chip

iTrader: (3)

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

leecavturbo

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

Chip

iTrader: (3)

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

Moonie

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

Chip

iTrader: (3)

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

do you know an example car done that way mate?

NEEDFORSPEED

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

Moonie

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.

NEEDFORSPEED

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

NEO™®©

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

NEEDFORSPEED

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

Chip

iTrader: (3)

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

If it is, then sold