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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.

Ford faces class-action lawsuit for selling vehicles without brake override systems

A total of 20 Ford customers are suing the automaker in a class-action lawsuit for selling vehicles "vulnerable to unintended acceleration." According to Reuters, the suit names 30 models built between 2002 and 2010 with electronic throttle control systems but without a brake override system. Those include the 2004-2012 F-Series pickups and the 2005-2009 Lincoln Town Car. Adam Levitt, a partner with the law firm of Grant & Eisenhofer says the plaintiffs in the case want "to be compensated for their economic losses by having overpaid for cars that contained defects." Levitt contends that the plaintiffs would not have bought their vehicles or paid less for them had they known there was no brake override system in place.
Ford began installing brake override systems in its vehicles beginning in 2010. In response to the lawsuit, Ford has pointed to research by the National Highway Traffic Safety Administration that indicated that unintended acceleration is mostly caused by driver error, saying in a statement that, "NHTSA's work is far more scientific and trustworthy than work done by personal injury lawyers and their paid experts."
Belville et al v. Ford Motor Co. will be heard in US District Court in the Southern District of West Virginia.

Ford recalls 83k Taurus and crossover models for halfshaft issue

Ford and the National Highway Traffic Safety Administration have issued a recall for some 83,250 vehicles in the US, for an issue with halfshafts. More specifically a "halfshaft retention circlip" might not have been properly installed on affected vehicles, with the result being halfshafts that may move improperly or disengage completely from the linkshaft while driving. The NHTSA release also notes that the issue may occur "without prior warning" which obviously factors in to the timeliness of getting this checked.
Should the halfshaft disengage, a few troubling things could happen. If it occurs while driving, power from the engine will no longer be transmitted to the wheels. And, if the vehicle is parked without the parking brake applied after disengagement of the circlip, vehicles may roll away even if they're transmissions have been placed in "Park."
Affected vehicles are as follows: Ford Edge and Lincoln MKX crossovers from model years 2012 to 2014; Ford Taurus and Lincoln MKS sedans from model years 2013 to 2014; Ford Flex and Lincoln MKT vehicles from model years 2013 to 2014.