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Title: TVUB scaling Post by: Lobuziak on April 27, 2012, 05:05:38 AM Recently I examined 2 original files from similar engines and similar injectors.(Opel Astra H Z20Ler, Z20Leh)
Injectors properties very similar - only flow difference (from xls file): 0 280 156 021 - Q-stat with 300 kPa (ml/min) - 339 original working fuel pressure of 3.3Bar at fpr - 355cc 0 280 156 280 - Q-stat with 300 kPa (ml/min) - 443 original working fuel pressure of 3.0Bar at fpr - 443cc It's 25% difference in flow TVUB table Code: Voltage 6.95V 10.01V 11.99V 14.03V 16.00V So it's not scaled it's shifted by 0.052ms ... pressure is lower but flow has increased Any hint's why it's like that. If I would have to scale injectors (3.3Bar to 4Bar fpr) thats 10% of flow, would it work adding 2/5 of 0.052ms to TVUB table? And of course divide KRKTE by 1.1 Regards Lobuziak Title: Re: TVUB scaling Post by: aef on February 12, 2014, 11:57:45 PM which factor for tvub was used here? and where is tvub located int the old motronic opel files
I would like to use the 0280156280 injectors is my 1.8t. here is a z20leh from another thread thank you in advance Title: Re: TVUB scaling Post by: Lobuziak on February 15, 2014, 02:41:10 AM In that binary TVUB starts at "A3F22" with factor "0.004" and X-axis starts at "A3F1D" with factor "0,068066"
Code: Volt = 6.9428 10.0058 11.9797 14.0217 15.9956 You can calculate TVUB with that polynomial formula for needed Voltage Code: =569,09036547467*Volt^0 -424,750155414357*Volt^1 + 137,332021107482*Volt^2 -24,9399550561729*Volt^3 + 2,778767507303*Volt^4 -0,194577979601958*Volt^5 + 0,00836983259422546*Volt^6 -0,000202432911864929*Volt^7 + 0,00000211005726501271*Volt^8 Regards Lobuziak Title: Re: TVUB scaling Post by: aef on February 15, 2014, 02:56:19 PM I am very new to this. Do i have to use the same faktor for tvub in my file or should i copy the values 1:1 ?
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