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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.

Road & Track samples rare 1995 Ford Mustang Cobra R

The modern performance variant of the Ford Mustang enjoys a long, illustrious history. While well-known examples like the Boss 302, Shelby GT350, and Shelby GT500 get all the attention, the modern versions of these cars may not have been possible had it not been for the three generations of the Cobra R, sold in 1993, 1995, and 2000. Limited to just 250 examples, the second-generation model wasn't as rare as the Fox-body Cobra R that preceded it, but they were still pricey and difficult to acquire. Customers were required to hold a competition license in order to take delivery, and prices were roughly equivalent to $59,000 in today's money. As Road & Track tells it, neither of those facts were a handicap – Ford sold its entire roster of 1995 Cobra Rs in just five days. RT's Jack Baruth managed to score a drive in an extremely low-mileage example of this now-vintage track star. He delivers an interesting look into the way a performance car from two decades ago behaves in today's world, and finds that despite its age, the 1995 Cobra R is still "a true sweetheart." Check out the full feature over at Road & Track. Related Video:

These horribly misguided front-drive design studies nearly became the Mustang

As we eagerly await the unveiling of the all-new sixth-generation Mustang, Ford has been giving us some great information over the past few months showing what has gone into shaping its venerable pony car. As many changes as the Mustang has gone through in its 50 years, though, it appears the fourth-gen model played a decisive and pivotal role in the car's future.
As is part of Mustang lore, the front-wheel drive Ford Probe was originally developed as a next-generation Mustang in the Eighties before cooler heads prevailed. The Blue Oval has just released a handful of images showing how bad things could have been - including a full-scale clay model of a front-wheel-drive Mustang (shown above). Fortunately, the FWD Mustang plan was scrapped and Ford went to work designing a rear-wheel-drive replacement for the Fox Body Mustang, with three design studies making it far enough to become full-scale models. These include the soft "Bruce Jenner" Mustang, the over-the-top "Rambo" Mustang and the middle-ground "Arnold Schwarzenegger" Mustang, which finally became the basis for the 1994 'Stang.
By early 1991, the design language of the fourth-generation Mustang had been worked out, and the rest, they say, is history. Scroll down for the fascinating press release telling the story of the fourth-gen Mustang, and be sure to check out the gallery of horribly misguided sketches and various design studies that were all on the table in the late 1980s.