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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
California E85 on Stock Gen2 (is it a FFV)?
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<blockquote data-quote="ayoustin" data-source="post: 1560001" data-attributes="member: 28480"><p>I stand corrected. It's been a while since I've looked back at this stuff, but I had written that it was projected for there to be a large swing in ethanol production from corn and soy to switchgrass and certain reed based plants over the past 5 years. It seems that push hasn't made the progress that was hoped for.</p><p></p><p></p><p></p><p></p><p>Haha I suppose you might also remember all the cars that lose valve seats when they took lead additives out of fuel.</p><p></p><p>As for ethanol, it's pretty much a wash on emissions and fuel economy. That's were the innovation (which hasn't really happened on large scale) is supposed to come in. More efficient production processes make the fuel easier and cheaper to produce. Engine designs with alcohol based fuels as the intended fuel to burn would have fuel economy similar to that of a gasoline engine. As it stands right now, ethanol is a fuel that can supplement gasoline, to be run as efficiently as gasoline it has to have a properly designed combustion chamber, properly designed piston crowns, proper heat range spark plugs, correct injection geometries etc. There's a lot that goes into this stuff, and unfortunately OEMs just aren't willing sacrifice some profit to develop an ethanol focused engine.</p><p></p><p></p><p></p><p></p><p>I know that the development processors for the 3.5EB use inferred ethanol content from fuel trims. As to how accurate they are, I have no idea. But if it's within 5% then I'd say that's plenty good enough for 99.9% of owners. I don't know if they kept that logic in the production processors or the limitations to how wide of a range of ethanol it can account for but that's how the engine was developed.</p><p></p><p>Alternatively, if that doesn't pan out, I'm sure there's something in the engine bay we can use that has a 0-5V signal. It's enough to make a module that can convert the 50-150hz signal coming from the sensor into a 0-5V signal that the processor sees. The harder part (in my mind) would be getting the logic in the processor to use that signal to adjust fueling, timing and boost etc. I don't know how easy or hard Ford made it to add/alter logic in this processor.</p></blockquote><p></p>
[QUOTE="ayoustin, post: 1560001, member: 28480"] I stand corrected. It's been a while since I've looked back at this stuff, but I had written that it was projected for there to be a large swing in ethanol production from corn and soy to switchgrass and certain reed based plants over the past 5 years. It seems that push hasn't made the progress that was hoped for. Haha I suppose you might also remember all the cars that lose valve seats when they took lead additives out of fuel. As for ethanol, it's pretty much a wash on emissions and fuel economy. That's were the innovation (which hasn't really happened on large scale) is supposed to come in. More efficient production processes make the fuel easier and cheaper to produce. Engine designs with alcohol based fuels as the intended fuel to burn would have fuel economy similar to that of a gasoline engine. As it stands right now, ethanol is a fuel that can supplement gasoline, to be run as efficiently as gasoline it has to have a properly designed combustion chamber, properly designed piston crowns, proper heat range spark plugs, correct injection geometries etc. There's a lot that goes into this stuff, and unfortunately OEMs just aren't willing sacrifice some profit to develop an ethanol focused engine. I know that the development processors for the 3.5EB use inferred ethanol content from fuel trims. As to how accurate they are, I have no idea. But if it's within 5% then I'd say that's plenty good enough for 99.9% of owners. I don't know if they kept that logic in the production processors or the limitations to how wide of a range of ethanol it can account for but that's how the engine was developed. Alternatively, if that doesn't pan out, I'm sure there's something in the engine bay we can use that has a 0-5V signal. It's enough to make a module that can convert the 50-150hz signal coming from the sensor into a 0-5V signal that the processor sees. The harder part (in my mind) would be getting the logic in the processor to use that signal to adjust fueling, timing and boost etc. I don't know how easy or hard Ford made it to add/alter logic in this processor. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
California E85 on Stock Gen2 (is it a FFV)?
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