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Title: Load definition x Maf values Post by: overspeed on April 01, 2011, 05:04:31 PM Can someone explain how the relation of Load (ms/Umdr) and the MAF values (Kg/s) ?
Everything I think doesn Title: Re: Load definition x Maf values Post by: nyet on April 01, 2011, 05:41:46 PM Can someone explain how the relation of Load (ms/Umdr) and the MAF values (Kg/s) ? Everything I think doesn http://s4wiki.com/wiki/Load Notice that ms/rpm is unitless. Title: Re: Load definition x Maf values Post by: overspeed on April 04, 2011, 08:36:35 AM Well I wrote a full mesage, but it is beeing cutted !!!
Stdmass = Engine diplacement x density / Umdr... so that makes the load unitless (%) Title: Re: Load definition x Maf values Post by: overspeed on April 04, 2011, 08:38:26 AM Wiki states only Engine displacement divides by density !!!
Title: Re: Load definition x Maf values Post by: nyet on April 04, 2011, 12:12:57 PM Well I wrote a full mesage, but it is beeing cutted !!! You know you can edit your posts, right? Quote 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. Quote Wiki states only Engine displacement divides by density !!! That is STANDARD MASS. Load is ingested mass/standard mass Title: Re: Load definition x Maf values Post by: overspeed on April 04, 2011, 07:22:13 PM I noticed if I wrote more than 3 lines and it
Title: Re: Load definition x Maf values Post by: nyet on April 04, 2011, 07:22:47 PM I noticed if I wrote more than 3 lines and it Get a proper browser. Title: Re: Load definition x Maf values Post by: overspeed on April 04, 2011, 07:23:22 PM 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) Title: Re: Load definition x Maf values Post by: nyet on April 04, 2011, 07:26:13 PM Again... the message is beeing cutted :-\ no edit button It should be right next to the "reply" link --- "modify" Title: Re: Load definition x Maf values Post by: auamanu on June 14, 2013, 03:26:20 PM 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.". Title: Re: Load definition x Maf values Post by: IamwhoIam on June 14, 2013, 05:50:11 PM 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 Title: Re: Load definition x Maf values Post by: overspeed on June 14, 2013, 06:32:38 PM 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) Title: Re: Load definition x Maf values Post by: auamanu on June 15, 2013, 04:28:03 AM What´s KFUH? I can´t find it in my M3.8.2.
I search the way to relate Air Mass to ms/umdr. Title: Re: Load definition x Maf values Post by: overspeed on June 15, 2013, 10:51:26 AM You must look at grundampassungskonstante (KHFM) Kg/h x min/ms
Title: Re: Load definition x Maf values Post by: auamanu on June 15, 2013, 01:42:45 PM 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? Title: Re: Load definition x Maf values Post by: auamanu on June 17, 2013, 12:09:28 PM Push
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