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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.

Ford recalls 2020-21 Explorer and Lincoln Aviator, 2021 E-Series

Ford announced safety recalls for the 2020-2021 Explorer and Lincoln Aviator along with the 2021 E-Series early Monday. The recalls address entirely different issues.  In the case of the 2020-2021 Ford Explorer and Lincoln Aviator, that issue is motor mount hardware. Specifically, the fasteners that secure the passenger-side motor mount may back out. In Ford's words, this can result in a "loss of power," which is the entirely predictable result of an engine parting ways with the vehicle it powers.  As alarming as that may sound, owners should not have to worry about anything extreme, as the passenger side mount is only one of multiple, and Ford says it is not aware of any incidents that have occurred with vehicles in customer hands. Ford says it impacts only about 1400 examples of the Explorer and Aviator in the States (plus two in Mexico and 65 in Canada) that were built at Chicago Assembly Plant between July 28 and 30, 2020. Ford is in the process of alerting its owners to the recall, and those with affected models will have their mount hardware replaced by their local Ford dealerships free of charge.  The 2021 E-Series is being recalled for a potential heat management issue resulting from improperly aligned thermal insulation on the underside of its engine cover. In vehicles where this insulation was not properly installed so that it reaches all the way to the edges of the cover, the resulting heat bleed can cause high in-cabin surface temperatures, and direct contact them could result in burns.  This is the larger of the two recalls, as Ford says it covers nearly 33,000 examples sold in the United States and Canada. Fortunately, as with the above issue, Ford says it has not been made aware of any customer incidents. Ford says the remedy is a set of insulation patches for the exposed areas.  Related Video:

Consumer Reports criticizes small turbo engines for misleading performance, fuel economy claims [w/video]

Consumer Reports has taken aim at at small-displacement, forced-induction engines, saying the powerplants don't manage to deliver on automaker fuel economy claims. Manufacturers have long held that smaller, turbocharged engines pack all power of their larger displacement cousins with significantly better fuel economy, but the research organization says that despite scoring high EPA economy numbers, the engines are no better than conventional drivetrains in both categories. Jake Fisher, director of automotive testing for Consumer Reports, says the forced induction options "are often slower and less fuel efficient than larger four and six-cylinder engines."
Specifically, CR calls out the new Ford Fusion equipped with the automaker's Ecoboost 1.6-liter four-cylinder engine. The institute's researchers found the engine, which is a $795 option over the base 2.5-liter four-cylinder, fails to match competitors in acceleration and served up 25 miles per gallon in testing, putting the sedan dead last among other midsize options.
The Chevrolet Cruze, Hyundai Sonata Turbo and Ford Escape 2.0T all got dinged for the same troubles, though Consumer Reports has found the turbo 2.0-liter four-cylinder in the BMW 328i does deliver on its promises. You can check out the full press release below. You can also read the full study on the Consumer Reports site, or scroll down for a short video recap.