openecu.org

Hi guys,

for people wanting fuel consumption in ecuedit: here is a line to add in logdefs.xml:

<parameter id="Fuel Consumption" storagetype="uint8" decimals="2" expr="((550*LP(&quot;Engine Speed&quot;)*LP(&quot;Fuel Injector #1 Pulse Width&quot;))/(1+(5000*LP(&quot;Vehicle Speed&quot;))))" metric="L/100km" desc="litre au 100"/>


Have fun

Phil

I did a few test runs and the results don't really make sens.

I double checked the formula and it seems right... anybody able to pin point why it would be off?

Do you add < ..priority="100" > attribute as I say on ecuEdit forum?

<parameter id="Fuel Consumption" storagetype="uint8" decimals="2" expr="((550*LP(&quot;Engine Speed&quot;)*LP(&quot;Fuel Injector #1 Pulse Width&quot;))/(1+(5000*LP(&quot;Vehicle Speed&quot;))))" metric="L/100km" priority="100" desc="liter per 100km"/>

yes I did and I'll run the new test this morning when going to work

ok found out why the discrepency...

the time used for injector pulse width includes the injector latency.

substract 0.68ms from the injector pulse width and it suddenly makes a lot more sense

Epifan... is there a way to add logic in there so we can cap out the result to a max value?

ex: at idle, the value of the formulas goes up in millions...

Can I get this for Miles Per Gallon? (US) ?

m3n0ch3 wrote:Epifan... is there a way to add logic in there so we can cap out the result to a max value?

ok, you can use IF(expr,true_res,false_res) function. But is not good in your complicated epression. I already add min(p1,p2), max(p1,p2) functions in expression calculator. So you cand download fixed version and try it.