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As a quick reference, here are lambda values and their AFR equivalents for different fuels. This is handy to use when looking at a wideband display/gauge that displays a gas scale AFR or just for curiosity’s sake.
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E85 is a high-level gasoline-ethanol blend containing 51% to 83% ethanol, depending on geography and season. Ethanol content is lower in the winter months in cold climates to ensure a vehicle starts. Based on composition, E85's lower heating value varies from 83,950 to 95,450 Btu/gal.
Create a custom chart comparing fuel properties and characteristics for multiple fuels. Select the fuels and properties of interest. 1 gallon of gasoline has 97%–100% of the energy in 1 GGE. Standard fuel is 90% gasoline, 10% ethanol.
If you want to be truly accurate then the proper approach would be to change the stoich setting to suit whatever blend you're running - 9.8:1 for E85 for example. If you do this then the target is different.
ethanol and E85 are listed in Table 1. Table 2 compares the properties of E85 to those of ethanol and gasoline. The chemical properties of ethanol must be accommo-dated to ensure proper engine performance, emissions, fuel economy, and driveability under all operating conditions. Ethanol and E85 Properties, Specifications, and Information Table 1.
E85 Ethanol Diesel Methanol Natural Gas Propane 14.7 : 1 9.8 : 1 9.0 : 1 14.5 : 1 6.4 : 1 17.2 : 1 15.7 : 1-----Stoichiometric AFR of Common Fuels AFR - Lambda Lambda - AFR 0 50 100 150 200 250 300 ... FULL LOAD (NA) 0.90 - 0.80 / TRANSITION (FORCED INDUCTION) 0.95 - 0.90 Load (kPa) Engine RPM AFR Target Table Guide Measured AFR Stoichiometric ...
7 lut 2014 · E85 is a power enabler allowing more cylinder pressure and/or more timing as if the engine was running on race fuel, but it cost us $3.69 per galloon as compared to $12-$17 per gallon for a ...
