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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.

Which is more fuel efficient, driving with a pickup's tailgate up or down?

Thanks to the smoke wand in the wind tunnel, you can actually see the difference in our video.
Should you drive with your pickup truck's tailgate up or down? It's an age-old controversy that's divided drivers for decades. Traditionalists will swear you should leave the tailgate down. Makes sense, right? It would seem to let the air flow more cleanly over the body and through the bed. But there's also a school of thought that argues trucks are designed to look and operate in a specific manner, and modern design techniques can help channel the airflow properly. So don't mess with all of that: Leave the tailgate up.

Ford turns Navistar from truck business customer to rival

There is a showdown brewing in the medium-duty truck segment next year as Ford prepares to launch its all-new, in-house engineered 2016 F-650 and F-750. It finally marks the end of the Blue Diamond joint venture between Ford and Navistar and, making the two entities direct competitors instead of partners.
Ford announced the end of the joint venture in an investor report in 2011, but it didn't reveal the new F-650 and F-750 until the NTEA Work Truck Show in Indianapolis, IN, in March. Unlike the current, Mexican-built models, the new generation will be built in Avon Lake, OH, starting in mid-2015.
The challenge from Ford comes during a rough patch for Navistar. The company had a $248 million loss in the first quarter, according to The Wall Street Journal, and its medium-duty truck market share is currently down to 26 percent, from 36 percent in 2011. Building the previous-generation Fords brought in about $400 million a year to Navistar, according to the WSJ. To take on its former partner, Navistar plans to offer its International brand of medium-duty vehicles with more engine and transmission options to customers. It even struck a deal with Cummins to put its diesels in some of the models.