2002 Ford F-150 Supercab Xlt 4x4 on 2040-cars

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Ford finds flex-fuel engine design plays big role in emissions output

How bad is ethanol for your engine? There's been a lot of debate on this issue as the US considers upping the biofuel content in the national gasoline supply from 10 percent (E10) to 15 percent (E15). The ethanol industry and some scientists say higher ethanol blends show no "meaningful differences" in new engines while the oil industry says ethanol creates health risks. Researchers working at the Ford Research and Innovation Center decided to take a closer look at how a wide range of gas-ethanol blends - E0, E10, E20, E30, E40, E55 and E80 - affected the emissions coming out of a flex-fuel 2006 Mercury Grand Marquis. To see the full report, printed in the journal Environmental Science & Technology, requires payment, but there is an abstract and Green Car Congress has some more details. The gist is that, "with increasing ethanol content in the fuel, the tailpipe emissions of ethanol, acetaldehyde, formaldehyde, methane, and ammonia increased." At least NOx and NMHC emissions decreased. The researchers say that the effects are due to the fuel and "are expected for all FFVs," but that the way that a manufacturer calibrates the engine will affect NOx, THC, and NMOG emissions. It's this last bit that's important, since the researchers found, "Higher ethanol content in gasoline affects several fundamental fuel properties that can impact emissions. ... These changes can have positive or negative effects that can depend on engine design, hardware, and control strategy. In addition to direct emissions impacts, higher ethanol content fuel can also provide more efficient combustion and overall engine operation under part-load conditions and under knock-limited higher-load conditions." So, as we head towards more ethanol in our fuel supply (maybe), manufacturers are going to need to learn how to burn it most efficiently.

Submit your questions for Autoblog Podcast #319 LIVE!

We record Autoblog Podcast #319 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #319
Jeep checks out the Grand Wagoneer at Wagonmaster

Ford to show special edition Raptor on April 9

There are precious few details, but what we do know is that Ford will be revealing images of "appearance upgrades" for a special-edition 2014 F-150 SVT Raptor on April 9. The slideshow will happen during a Motor Press Guild luncheon at Ford's Design Center Showroom in Irvine, California.
Without photos or further details, we're left to wonder about the extent of these changes, but aren't expecting anything too significant given the venue. Ford is understood to be revealing a next-generation F-150 with a big weight loss - as much as 700 pounds - for 2014, though it isn't yet clear if that's the truck's model year or simply its on-sale year. For at least a couple of years, Ford forums have been suggesting changes will come with the 2014 Raptor, so there could still be a bigger surprise in store. Either way, we'll know what all this means in a little more than a week. The press release below has the official details, but for the moment, we'll content ourselves by ogling the 2013 model above.