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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.

Petrolicious shows Mercedes 280SL as architecture in motion

While still an absolute beauty today, the design of the pagoda-roof W113 Mercedes-Benz SL was revolutionary when it debuted. Moving away from the soft curves of the previous SL models, the all-new generation brought an upright, angular shape that was as much architectural as automotive. In the latest video from Petrolicious, owner and architect Daniel Monti expounds on the inspiration that he gets from his 1969 280SL's fantastic styling. The roof is the most famous design feature of this generation of SL. Look at the top from the front or back, and you can see a gentle, downward arc that evokes the look of a pagoda. That one styling element is also a fabulous counterpoint to a vehicle that is largely more angular than curvaceous. Petrolicious wonderfully illustrates how some of the SL's form-follows-function design aesthetic can be found in the architect's work in this video's heaping helping of mid-century modern goodness.

Icon and Stealth EV are building an electric Derelict Mercury

Icon, a company known for its high-quality restomod vehicles, is building another Derelict, this one a 1949 Mercury coupe. While the fact Icon is building another one of its sleeper hot rods with patina isn't the most shocking, what's under the hood is. The company has teamed up with Stealth EV to turn this latest Derelict into an electric car. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. The car was shown in the above Twitter post with video. The exterior is just what you'd expect from an Icon Derelict. It's solid but with a weathered finish. And even as the guy from Stealth EV approaches the car, it looks like it has a V8 under the hood. But as he explains, there's actually the two motor controllers and half of a Tesla battery pack under there. It's just that they've all been given some classy looking metal casings and mounted to look like a V8. Apparently the motors themselves are in the transmission tunnel. The Stealth EV rep says it uses a pair of AM Racing motors. Depending on which motor controllers the companies are using, those motors could produce as much as 700 horsepower. Power will go to the rear wheels and no transmission will be used, making it direct drive. It will have a limited-slip differential, and the whole car sits on an Art Morrison chassis with independent suspension. This actually isn't the first electric Icon, nor the first developed with Stealth EV. Before this, the companies created a totally awesome electric Volkswagen Thing. That little truck made much less power at 180 horses, but it was also a way smaller and lighter vehicle. Related Video: