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overspeed
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« on: April 01, 2011, 05:04:31 PM »
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Can someone explain how the relation of Load (ms/Umdr) and the MAF values (Kg/s) ?
Everything I think doesn
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nyet
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« Reply #1 on: April 01, 2011, 05:41:46 PM »
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Can someone explain how the relation of Load (ms/Umdr) and the MAF values (Kg/s) ?
Everything I think doesn
http://s4wiki.com/wiki/LoadNotice that ms/rpm is unitless. |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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overspeed
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« Reply #2 on: April 04, 2011, 08:36:35 AM »
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Well I wrote a full mesage, but it is beeing cutted !!!
Stdmass = Engine diplacement x density / Umdr... so that makes the load unitless (%)
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overspeed
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« Reply #3 on: April 04, 2011, 08:38:26 AM »
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Wiki states only Engine displacement divides by density !!!
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nyet
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« Reply #4 on: April 04, 2011, 12:12:57 PM »
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Well I wrote a full mesage, but it is beeing cutted !!!
You know you can edit your posts, right? Stdmass = Engine diplacement x density / Umdr... so that makes the load unitless (%)
No. Standard mass is displacement * standard density, which is volume * density = mass. Sorry, the wiki has a typo, which I am fixing. Wiki states only Engine displacement divides by density !!!
That is STANDARD MASS. Load is ingested mass/standard mass |
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« Last Edit: April 04, 2011, 12:16:24 PM by nyet »
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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overspeed
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« Reply #5 on: April 04, 2011, 07:22:13 PM »
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I noticed if I wrote more than 3 lines and it
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nyet
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« Reply #6 on: April 04, 2011, 07:22:47 PM »
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I noticed if I wrote more than 3 lines and it
Get a proper browser. |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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overspeed
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« Reply #7 on: April 04, 2011, 07:23:22 PM »
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Again... the message is beeing cutted  no edit button Lets see if with Mozilla it goes rigth yes !! huahuahua Well... now it´s rigth, there was an error in Wiki (2 acctually in explaining because you have to state that Std ir per unit of revolution - Umdr, but it´s kind of obvious) |
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« Last Edit: April 04, 2011, 07:26:26 PM by overspeed »
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nyet
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« Reply #8 on: April 04, 2011, 07:26:13 PM »
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Again... the message is beeing cutted no edit button It should be right next to the "reply" link --- "modify" |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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auamanu
Jr. Member
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Posts: 44
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« Reply #9 on: June 14, 2013, 03:26:20 PM »
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Hello,
i must push the thread.
Load calculate in % is no problem, but how ca i calculate the Load for a M3.8.x ECU?
The value is "ms/umdr.".
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IamwhoIam
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« Reply #10 on: June 14, 2013, 05:50:11 PM »
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From a slightly older version of Motronic but it should give you an idea.
mL (UHLM)
tL[ms]= ---------------- * KFUH
n * K1
mL = Luftmasse [Kg/h]
n = Motordrehzahl [1/min]
K1 = Konstante
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I have no logs because I have a boost gauge (makes things easier)
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overspeed
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« Reply #11 on: June 14, 2013, 06:32:38 PM »
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In older motronic load is related to injector pulse, that is related to torque... the time you get lambda =1,
Your fuel trim tables makes richer or leanner (more or minus than 128 that is the standart for lambda =1)
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auamanu
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« Reply #12 on: June 15, 2013, 04:28:03 AM »
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What´s KFUH? I can´t find it in my M3.8.2.
I search the way to relate Air Mass to ms/umdr.
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overspeed
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« Reply #13 on: June 15, 2013, 10:51:26 AM »
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You must look at grundampassungskonstante (KHFM) Kg/h x min/ms
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auamanu
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« Reply #14 on: June 15, 2013, 01:42:45 PM »
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Sry, but i don´t understand this.
look at my attachment, pleace.
It´s my Value ( 32895 ) on KHFM right? Is it, how can calculate ms/umdr. with it?
Kg/h * 32895 , 32895 * Kg/h, 32895 * Kg/h * min/ms, ....
I become never a valide ms rate betwen 4-12 ms.. Always i get stuff...
Can me explane anybody this on a example pleace?
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