Rob W Posted September 27, 2019 Report Share Posted September 27, 2019 I'm looking to run E30-E40. I don't have enough injector or pump to go full E85, so I won't be tuning the second fuel at full strength for the tables to extrapolate between in the blend table. The Link help files give all of the fuel density, stoich ratios, etc for E85. So lets say E30 is going to be my second fuel would I tune the car on E30 and set up the Multi Fuel Blend Ratio Table so that everything over E30 is at 100% and leave the known ethanol properties in the multi fuel table. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 28, 2019 Report Share Posted September 28, 2019 The suggested option would be to calculate the correct density and stoich ratio settings for E30, then as you say your blend ratio table can use 100% of fuel #2 settings when the flex sensor is reading 30% eth. Quote Link to comment Share on other sites More sharing options...
Rob W Posted September 29, 2019 Author Report Share Posted September 29, 2019 Bugger. I was hoping that would not be the case. I couldn't work out how to do the calculations. My BP 98 petrol here is 14.4 stoich. I have been trying to google the information to no avail. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 30, 2019 Report Share Posted September 30, 2019 30% eth @9:1 with 70% petrol @ 14.4:1 would give you a stoichiometric ratio of about 12.78:1. Density will be about 0.758. Rob W 1 Quote Link to comment Share on other sites More sharing options...
Rob W Posted October 4, 2019 Author Report Share Posted October 4, 2019 Thanks Adam. I'm working away so can't respond to this as often as I'd like. Does the Density Temp Coefiicient make a big difference? Can you show me the equation to do the calculations Quote Link to comment Share on other sites More sharing options...
Rob W Posted October 4, 2019 Author Report Share Posted October 4, 2019 Another one? What would the injector flow rate be at 43.5 psi for ID 1050x. There is g4 characterization data on the ID website but no specific to ethanol Quote Link to comment Share on other sites More sharing options...
Mario Schneiderbanger Posted March 9, 2020 Report Share Posted March 9, 2020 On 9/30/2019 at 2:42 AM, Adamw said: 30% eth @9:1 with 70% petrol @ 14.4:1 would give you a stoichiometric ratio of about 12.78:1. Density will be about 0.758. Hey adam, i’m in a similar boat but i’m running 60% mix. How did you calculate this? i’m currently switching to modelled mode from traditional and i don’t know what to set as the stoich ratio/density for my fuel Quote Link to comment Share on other sites More sharing options...
dx4picco Posted March 9, 2020 Report Share Posted March 9, 2020 0.3*9+(0.7*14.4) is the calculation he made. for you it would be 0.6*9+(14.4*0.4)=11.16 Quote Link to comment Share on other sites More sharing options...
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