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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.

Best Large SUVs of 2024

When it comes down to large SUVs, there's more to consider than price and just how large it is. First, it comes down to what's underneath the skin. Some are built on a truck-like body-on-frame chassis — this would be the traditional, literal definition of an "SUV." Others use car-like, unibody construction, which would make them a crossover. What really matters, though, is how you use them. For most American families, a large three-row crossover is going to be your best bet. They have loads of passenger and cargo space, and deliver superior fuel economy, handling and ride quality than those big traditional SUVs. They're cheaper, too. On the other hand, those traditional large SUVs like the Chevy Tahoe and Ford Expedition are better-suited for more heavy-duty tasks like towing. Most now have bigger third rows than big crossovers, while extended-length versions like the Chevy Suburban have way more cargo capacity behind their third rows than everything but an airport shuttle. As for luxury large SUVs, they fall into those same two categories as well, with American choices mostly being truck-based. The pros and cons of choosing one over another are similar. Below, you will find our list of the best large SUVs broken down into three categories: large family crossover, large traditional SUV and large luxury SUVs, which comprise both construction types.  Best Large Family Crossovers  |  Best Large Traditional SUVs  |  Best Large Luxury SUVs Best Large Family Crossovers 2024 Honda Pilot Why it stands out: Exceptional storage and cargo space; unique second-row functionality; refined ride; versatile and capable TrailSport; advanced AWDCould be better: Subpar acceleration with lackadaisical transmission and engine response; so-so driver assistance tech Read our full 2024 Honda Pilot Review The Honda Pilot was completely redesigned for 2023. It maintains its predecessor's family-friendly packaging and overall focus, but it has injected a welcome sense of style (especially in the TrailSport pictured above) that makes it stand out much better from the big crossover crowd. The Pilot's restrained adornment and classic proportions are refreshing compared to the increasingly busy Kia Telluride, Hyundai Palisade and Subaru Ascent. Let's talk about practicality, though, which is ultimately the Pilot's best attribute.

Watch a drone try to land in back of a moving 2015 Ford F-150 at night

Automotive stunts don't always have to make sense; they just have to look cool. Does it really prove anything about the bed lighting in the 2015 Ford F-150 to attempt to land a drone back there while driving at night? Probably not, but Ford Canada wants to find out anyway, because the trick looks good on film. Chris Bacik is an expert at flying drones and even builds his own to use for his aerial cinematography company. As Ford Canada's very serious narrator intones, the question now is whether he can use those piloting skills to land on a moving F-150 in the dark. To make things even harder, the night of the stunt is quite windy. Even if the video demonstrates little about the truck's capabilities, it's fun to see if Bacik can do accomplish the feat. Related Video: