Mpguino software for older cars with carb
I am new here and have built the Mpguino very nice circuit, but I have an older car with a carb has anyone moded the software to run on a flow sensor pulses and maybe ignition pickup circuit for rpm I have orderd a flow sensor on ebay that they use for the new coffe machines
http://img268.imageshack.us/img268/2463/597604178o.jpg I need to test if the plastic withstands petrol but at only $8 to buy can't go wrong they come in 3mm and 2mm bore sizes and would do the job well as they measure the amount of liquid to fill a cup I think this would make the unit universal and could be used on any car |
know what kind of signal it will output? i see it indicating a square wave, which may work, you'll just have to mess with the uSec/mSec per gallon calculation a lot to get it to match up.
|
I will try that but from what i understand about the software it calculates MPG by the injector pulse width wouldn't it need to be changed to pulse rate?
|
You can find some information here: http://ecomodder.com/forum/showthrea...sel-16711.html The issue is the same for carb and old diesel engines.
|
Hello dom444
Do you have some more detailed information about that flow sensor? I have also searched for flow sensors suitable for fuel flow measuring. |
Not much to tell I don't have mine yet just ordered it, I have 2 coming but they are only about the $8 dollar price on ebay from china they are designed for the coffee machines.
type in ebay "coffee flow" in a world wide search they operate on 5-24v and have a pulse output they don't supply anymore information than that, when I get them will be able to tell you more. I also need to make sure they can withstand petrol. |
here is some info I found on one of them:
For the sense of the water flow rate on the following equipments: Thermostatic water heater, water purifier, water dispenser, smart card equipment, coffee machine etc. frequency =26*Q(Q: L/min) , Inner diameter :3.0mm,Flow rang:0.5-5L/min Maximum current:15mA further searching says they are made from Polyoxymethylene or POM material which according to Wikipedia is also used for fuel senders. |
Quote:
Do you have fuel system with return line or without? With return line system two sensors are needed -- one for forward flow, one for back flow. Hopefully then we can program mpguino to measure the difference between flows, and calibrate it. It shouldn't be very difficult. |
Mine is standard four cylinder petrol car fills the carb then stops should be easy as long as there is enough flow but i think the flow meters are a paddle wheel design with a hall sensor so should still turn even on low flow rates i would think.
|
just received the first sensor have a pic of it disassembled very simple design and has 2 extra holes in the turbine blade for additional magnets if required to increase the pulse count per liter or gallon.
http://www.freeimagehosting.net/et5rc here is a small video of the sensor working pulses showing on an LED http://youtu.be/sINe8f7ullc |
All times are GMT -4. The time now is 10:10 PM. |
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com