calibrate injectors 3bar to 4bar fuel pressure

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Alexcsi

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	calibrate injectors 3bar to 4bar fuel pressure « on: January 17, 2022, 02:07:13 AM »

Hello,

hope my English ist now better.

Can someone calibrate the Original injectors for my tune ?

ECU: ME7.5
Engine Code: ARZ

I have a AEM lambda and the 0.5v from 3000rpm to 4600rpm
3 bar fuel pressure regulator to 4 bar

Kind regards


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fknbrkn

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mk4 1.8T AUM

	Re: calibrate injectors 3bar to 4bar fuel pressure « Reply #1 on: January 17, 2022, 03:35:49 AM »

Thats over optimistic filename


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nupustas

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	Re: calibrate injectors 3bar to 4bar fuel pressure « Reply #2 on: January 17, 2022, 07:06:57 AM »

Quote from: Alexcsi on January 17, 2022, 02:07:13 AM

Can someone calibrate the Original injectors for my tune ?

why not do it yourself? https://s4wiki.com/wiki/Tuning


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360trev

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	Re: calibrate injectors 3bar to 4bar fuel pressure « Reply #3 on: January 28, 2022, 01:20:25 PM »

This *may* help depending on how far you've studied so far

SSECUHN : 0261206435 : systemSupplierECUHardwareNumber SSECUSN : 1037352035 : systemSupplierECUSoftwareNumber DIF : 06A906032AS : .. BRIF : 0001 : .. OTHERID : 1.8L R4/5VT : .. EPK: /1/ME7.5/5/4013.00//F21dw/Dst01g/030599/

Code:

-[ KRKTE Airmass to injector 'on time' conv. based on inj size & fuel pressure]-----------------

        Calculation of constant KRKTE:
        ------------------------------
        rho0Air  = 1.293 [g/dm3]  (0 Deg C and 1013hPa)
        Vhzyl    =         [dm3]  Displacement of a cylinder in dm3

        Lst      = 14.7 AFR        Air/fuel ratio for Lambda = 1.0
        Normmk   = 0.00001667      min/ms Adaptation of units
        Qstat    = g/min           Valve constant with n-Heptane
                                   1.05 Valve correction for petrol/n-Heptane

        Calculation:
        ------------
                                 rho0Air [g/dm3 ] * Vhzyl[dm3 ]
              KRKTE [ms/%] = --------------------------------------------------
                             100[%] * Lst * Normmk[min/ms] *1.05 * Qstat[g/min]

              KRKTE        = 50.2624 * Vh / Qstat

>>> Scanning for KRKTE Lookup code sequence...

KRKTE           @ ROM:0x818C9B RAM:0x007B9CBB File-Offset:0x18C9B    (seg=0x0206 [segadr=0x818000] val=0x0C9B)
0x30 (0.1024 ms/%)


-[ TEMIN : Minimum effective injection time ]-----------------------------------

Searching for RKTI_CalcInjectionTimeFromFuelMass_syns()
Succeeded

TEMIN           @ ROM:0x81A54E RAM:0x007BB56E File-Offset:0x1A54E    (seg=0x0204 [segadr=0x810000] val=0xA54E)
TEMIN : 0.0000 ms : 0 (0x0)

-[ TVUB Battery Voltage Correction () ]---------------------------------------------------------

>>> Scanning for AES Injection output
AES references: CWPKAPP,pses_w,FRLFSDP,PSAPES,TVUB,KRKTE

>>> Scanning for TVUB - Fuel Injection time offset in ms (compensates for fuel injector latency)
Succeeded

Searching for AES_100ms_CalcFuelInjectionTime()
Succeeded

TVUB
    Long identifier:           Fuel Injection Battery Voltage Correction.
    Display identifier:        Not Defined
    Cell Address:              0x1FCC2
    Value:

 No.           |        0        1        2        3        4
            PHY|   7.9552   9.9968  11.9680  14.0096  15.9808
            ADR| 0x811F95 0x811F96 0x811F97 0x811F98 0x811F99
 --------------+---------------------------------------------
            PHY|   0.4160 157.2832   0.4160 206.4992  12.9504
            ADR| 0x81FCC2 0x81FCC4 0x81FCC6 0x81FCC8 0x81FCCA


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doublerwest

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	Re: calibrate injectors 3bar to 4bar fuel pressure « Reply #4 on: February 27, 2022, 05:15:43 AM »

Quote from: Alexcsi on January 17, 2022, 02:07:13 AM

What are the original size injectors at 3 bar?


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W357

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	Re: calibrate injectors 3bar to 4bar fuel pressure « Reply #5 on: February 27, 2022, 07:30:08 AM »

Kekte × 0.17= x. Krkte - x= 4 bar krkte starting point at least. THIS IS AS SIMPLE AS IT GETS PEOPLE!


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