Conversie g/s la hp

Started by MihaiFlorescu, January 12, 2022, 11:47:57 AM

MihaiFlorescu

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Preluat de pe forumul nasioc. Sunt mai multi useri care au preluat informatii din mai multe locuri asa ca nu as putea spune clar cine este autorul, dar multumim!

mafv   g/s   lb/min    hp
2.00   16.81   2.22   22
2.05   18.33   2.42   24
2.10   19.93   2.64   26
2.15   21.62   2.86   29
2.20   23.41   3.10   31
2.25   25.30   3.35   33
2.30   27.29   3.61   36
2.35   29.38   3.89   39
2.40   31.58   4.18   42
2.45   33.89   4.48   45
2.50   36.31   4.80   48
2.55   38.85   5.14   51
2.60   41.50   5.49   55
2.65   44.28   5.86   59
2.70   47.17   6.24   62
2.75   50.19   6.64   66
2.80   53.34   7.06   71
2.85   56.62   7.49   75
2.90   60.04   7.94   79
2.95   63.59   8.41   84
3.00   67.27   8.90   89
3.05   71.10   9.41   94
3.10   75.08   9.93   99
3.15   79.20   10.48   105
3.20   83.47   11.04   110
3.25   87.90   11.63   116
3.30   92.47   12.23   122
3.35   97.21   12.86   129
3.40   102.11   13.51   135
3.45   107.17   14.18   142
3.50   112.39   14.87   149
3.55   117.79   15.58   156
3.60   123.35   16.32   163
3.65   129.09   17.08   171
3.70   135.01   17.86   179
3.75   141.10   18.67   187
3.80   147.38   19.50   195
3.85   153.84   20.35   204
3.90   160.49   21.23   212
3.95   167.33   22.14   221
4.00   174.36   23.07   231
4.05   181.58   24.02   240
4.10   189.01   25.01   250
4.15   196.63   26.01   260
4.20   204.46   27.05   271
4.25   212.50   28.11   281
4.30   220.74   29.20   292
4.35   229.20   30.32   303
4.40   237.87   31.47   315
4.45   246.76   32.65   326
4.50   255.86   33.85   339
4.55   265.19   35.09   351
4.60   274.75   36.35   363
4.65   284.53   37.64   376
4.70   294.54   38.97   390
4.75   304.79   40.32   403
4.80   315.27   41.71   417
4.85   325.99   43.13   431
4.90   336.95   44.58   446
4.95   348.16   46.06   461
5.00   359.61   47.58   476
5.05   371.31   49.12   491


mass(g/s)=3.5906*mafv^3-4.0038*mafv^2+2.2571*mafv-0.4089

hp este estimare pe baza formulei 10hp/(1lb/min)
'13 Crosstrek XV
Fostele: 
Frosty XT
05 Impreza GX 
05 Impreza
08 Outback
01 WRX

Sorin03

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Interesant..eu monitorizez si MAF-ul si pe cruise la 145 sau 150km/h aveam 96-97g/s...deci 122cp din 150😅.

MihaiFlorescu

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Ce turatie? Ca nu te astepti sa ai toti caii oricand oricum.
'13 Crosstrek XV
Fostele: 
Frosty XT
05 Impreza GX 
05 Impreza
08 Outback
01 WRX

Sorin03

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Posts: 490
Location: Brasov
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Serb

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Breathing for a living.
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andea79

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nu zice nimeni ca modalitatea asta de estimare e ok pt diesel sau FAuri :)
si la EJuri e ok in anumite conditii ...

andea79

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#6
ca idee, STI 2008 nemodificat e dat la ~300hp la motor, masurat la 235-240 cai la roata si in loguri de asemenea vezi 235-240g/s la ~6200rpm deci e prin zona formula 240 / 80 * 100 = 300

si am avut mai multe masini cu modificari masurate si pe dyno si cu +/- 5 cai fata de estimarea data de formula de mai sus dar e important evident ca g/s sa fie o valoare corecta ->  ca daca modifici din cipciuning maf scalingul de exemplu ca sa compensezi o setare de injectoare inexacta sau ca sa obtii un AFR dorit fara sa schimbi target AFR sau ai ceva leak pe partea de aer sau altele de genul evident ca formula not working

de asemenea poti avea valori corecte de g/s dar daca AFR-ul este super bogat sau avansul jos evident again ca nu esti la caii rezultati din formula

sau altfel zis : cu valori corecte de g/s, AFR around 11 si avans la ~2 grade sub limita de knock estimarea functioneaza