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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.

Automakers tussle over owners of 'orphan' makes

When General Motors put down several of its brands in recent years, it also let loose thousands of brand-loyal customers who will eventually need another car.
R.L. Polk Associates estimates there are more than 18 million cars from 16 discontinued makes on the road today. Those "orphan owners" have sales-hungry competitors seeing dollar signs. GM is offering Saturn owners $1,000 cash toward a Chevy Cruze, Cadillac CTS or a GMC Acadia. Ford is giving its Mercury lease customers a chance to get out of their contracts with no early-termination penalty and offering to waive six remaining payments if they drive off in a Ford or Lincoln.
Edmunds.com research shows the efforts are paying off somewhat for GM, with 39 percent of Pontiac owners, 37 percent of Hummer owners and 31 percent of Saturn owners taking delivery of another GM-branded vehicle. But that leaves as much as 69 percent of owners going elsewhere. Ford, Honda and Toyota seem to be attracting many former GM owners.

Ford recalls Five Hundred, Mercury Montego sedans over fuel tank woes

Ford has announced through the National Highway Traffic Safety Administration that it is recalling nearly 3,000 examples of its Five Hundred and Mercury Montego (pictured) sedans from the 2007 model year.
The action, which affects 2,945 vehicles, is due to potentially defective welds between the filler neck and the fuel tank, a condition that could result in a fuel leak or the smell of gasoline reaching the occupants. In the worst-case scenario, a leak could cause a fire. Cars with the affected fuel tank problem could see an illuminated dashboard warning light as a result of the evaporative emissions leak being detected.
Ford will inspect and replace the fuel tank at no cost to owners (those who have already had the procedure done at-cost can apply for reimbursement), and the Dearborn automaker will begin notifying Five Hundred and Montego owners beginning August 15. Check out the official NHTSA press release after the jump for further details.