Checking KRKTE and setting right factor

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Topic: Checking KRKTE and setting right factor (Read 6612 times)

masterj

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	Checking KRKTE and setting right factor « on: November 20, 2011, 03:20:35 AM »

Could someone help me out with KRKTE? I'm trying to test if my current KRKTE factor is OK...

I have 1.8T AWT with 260cc injectors. Current KRKTE is 0.10478 but I can't get this number using (50.2624 * Vhcyl) / Qstat formula. So is my factor bad or my formula?

Factor is 0,000111
ECU SW: 4B0906018DC


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	Re: Checking KRKTE and setting right factor « Reply #1 on: November 20, 2011, 10:24:58 PM »

So here's my math on this, which I believe to be correct. (which I will be adding to my "theoretical" DIY/reference soon)

Rated vs. Operating pressure:

If you're AWT has 260cc injectors:

260 @ 3Bar (43.5psi) = 260cc
260 @ 4Bar (58.0psi) = 300.22cc (assuming a 4bar FPR that I believe comes stock on your car)

Conversion given n-heptane (the testing solution for injectors valued at 0.684g/cc Density):
300.22 x 0.684 = 205.250 g/min

50.2624*Vhzyl / Qstat

Vhzyl = Displacement/Cylinders = 1.781/4 = 0.44525
Qstat = Injector value @ operating pressure = 205.250

--50.2624*0.44525/205.250
---22.3793336/205.250
Calculated KRKTE= 0.10903

Your stock value: 0.10478
Your calculated value: 0.10903

Technically, thats a 4% final difference in injector calculation, not too far off but enough that I would want to change it.


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masterj

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	Re: Checking KRKTE and setting right factor « Reply #2 on: November 21, 2011, 01:36:57 AM »

Thank you for calculations Wink

I've set my factor to 0,0001155


« Last Edit: November 21, 2011, 01:51:16 AM by masterj »	Logged

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CQ1

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	Re: Checking KRKTE and setting right factor « Reply #3 on: March 15, 2017, 04:17:18 AM »

Quote from: masterj on November 21, 2011, 01:36:57 AM

Thank you for calculations Wink

I've set my factor to 0,0001155

Hello,

Was this factor 0,001155 correct? Because i found some info that 0280156065 have 252cc/min @3bar?
Got 4B0906018CG ECU, and KRKTE value 0,10478.


« Last Edit: March 15, 2017, 04:20:01 AM by CQ1 »	Logged

CQ1

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	Re: Checking KRKTE and setting right factor « Reply #4 on: March 15, 2017, 04:19:02 AM »


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