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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.

How did Ford keep the GT a secret before Detroit?

True secrecy is a rarity in the automotive industry. Sure, companies try to keep their future projects under wraps all of the time, but usually a spy shot or blurry development photo leaks out. The complete lack of any hard details before its unveiling likely helped make the Ford GT one of the biggest stars of the 2015 Detroit Auto Show. Not only was it the favorite of Autoblog's editors, but the supercar scored a prestigious EyesOn Design Award, too. Rumors about the vehicle had circulated for weeks before the show, but no one really knew much about the GT until it rolled onto the stage for Ford's press conference in Joe Louis Arena. Amazingly, the Blue Oval kept things mostly a secret during the car's 14- month gestation period prior to its debut. According to Automotive News, the GT project began in late 2013 by a skunk works team, including six designers, that guided the supercar along from birth until the unveiling. Ford kept things clandestine by locking the vehicle in a basement storage room, and only the group members got a key to the lock. Much of the development was also done at night to further keep the secret, but occasionally the prototype was hauled outside on weekends to check it out in natural light. Because of the speed in getting the development done and for even more stealth, the designers didn't get input from the Blue Oval's other styling teams around the world. But that was somewhat of a double-edged sword. "You don't actually get to bounce opinions off people," Ford design boss Moray Callum said to Automotive News. "We were on tenterhooks ourselves until the first people saw it." Even now, there are still mysteries surrounding the GT. There's still no official word on the supercar's power; just that it's over 600 horsepower. There are also the persistent rumors going back months that the Blue Oval plans to take the GT racing to celebrate the 50th anniversary of automaker's Le Mans victory. Although, maybe this time the secrecy wasn't so good because we might have got a glimpse of the racer, recently. Related Video:

Should heavy-duty pickup trucks have window stickers with fuel mileage estimates?

If you were to stroll into your nearest Chevrolet, Ford, GMC, Nissan, or Ram dealership, you'd find a bunch of pickup trucks. Most of those would have proper window stickers labeled with things like base prices, options prices, location of manufacture, and, crucially, fuel economy estimates. But you'd also run across a number of heavy-duty trucks with no such fuel mileage data from the Environmental Protection Agency. The EPA doesn't require automakers to publish the valuable miles-per-gallon measurement for vehicles with gross weight ratings that exceed 8,500 pounds. That makes it difficult for consumers to compare behemoths powered by turbocharged diesel engines – between one another, and between smaller, gasoline-fueled trucks. Consumer Reports doesn't think it should be this way, and it's spearheading an effort (PDF link) to get the government to require manufacturers to publish fuel economy estimates. In its own testing, CR found that heavy-duty pickups powered by Ford's Power Stroke, GM's Duramax, and FCA's Cummins diesel engines (which doesn't include the Ram's EcoDiesel) get worse fuel mileage than their lighter-duty gas-powered siblings. We're not so sure HD-truck buyers are unaware of this fact – big diesels don't really come into their own until big loads are placed in their beds or attached to their trailer hitches. Under heavy workloads, the diesel trucks will almost certainly return greater efficiency than a similar gas-powered truck. What's more, HD trucks with lumbering diesels in general make the driver feel more confident while towing due to greater torque at low engine RPM than gas trucks. They also offer greater max-weight limits. Still, we agree EPA fuel mileage estimates should be offered for heavy-duty pickups. And we think the comparisons provided by Consumer Reports might be interesting to potential buyers. Click here to see the results of CR's tests, and let us know what you think using the poll below. Related Video: Featured Gallery 2017 Ford F-Series Super Duty: First Drive View 22 Photos News Source: Consumer Reports Government/Legal Green Read This Chevrolet Ford GMC Nissan RAM Fuel Efficiency Truck Commercial Vehicles Diesel Vehicles poll gmc sierra hd chevy silverado hd