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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.

Production Ford Escort heading for Beijing

Ford's long-dormant Escort nameplate returned affixed to a sedan concept at last year's Shanghai Motor Show. While not exactly a beauty, it showed a clean, straightforward take on Ford's current styling. The Blue Oval said at the time that it wanted to create a model that was stylish "but not one that is arrogant or pretentious." Job done. A year later, it looks like the minimalist vehicle might make its production debut at the Beijing Motor Show.
Autocar claims that the streetgoing version has been confirmed to it for the upcoming show, but so far, Ford isn't saying. If unveiled, the Escort is likely to be produced locally for the Chinese market with a domestic partner. Powertrain details remain a secret, but it seems highly likely that any production model would use a small three- or four-cylinder engine and front-wheel drive. Sales in other major world markets like ours are unlikely, but a test car was recently spotted in Europe.
Autoblog contacted Ford for confirmation, but the automaker demurred, with a spokesperson saying only, "At the moment, we are not confirming any vehicles planned for the show." It looks like we will have to wait to know for sure.

Which is more fuel efficient, driving with a pickup's tailgate up or down?

Thanks to the smoke wand in the wind tunnel, you can actually see the difference in our video.
Should you drive with your pickup truck's tailgate up or down? It's an age-old controversy that's divided drivers for decades. Traditionalists will swear you should leave the tailgate down. Makes sense, right? It would seem to let the air flow more cleanly over the body and through the bed. But there's also a school of thought that argues trucks are designed to look and operate in a specific manner, and modern design techniques can help channel the airflow properly. So don't mess with all of that: Leave the tailgate up.