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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.

Big electric trucks won't save the planet, says the NYT

When The New York Times decides that an issue is an issue, be prepared to read about it at length. Rarely will a week passes these days when the esteemed news organization doesn’t examine the realities, myths and alleged benefits and drawbacks of electric vehicles, and even The Atlantic joins in sometimes. That revolution, marked by changes in manufacturing, consumer habits and social “consciousness,” may in fact be upon us. Or it may not. Nonetheless, the newspaper appears committed to presenting to the public these pros and cons. In this recently published article titled, “Just How Good for the Planet Is That Big Electric Pickup Truck?”—wow, thatÂ’s a mouthful — the Times focuses on the “bigness” of the current and pending crop of EVs, and how that impacts or will impact the environment and road safety. This is not what news organizations these days are fond of calling “breaking news.” In October, we pointed to an essay in The Atlantic that covered pretty much the same ground, and focused on the Hummer as one particular villain, In the paper and online on Feb. 18, the Times' Elana Shao observes how “swapping a gas pickup truck for a similar electric one can produce significant emissions savings.” She goes on: “Take the Ford F-150 pickup truck compared with the electric F-150 Lightning. The electric versions are responsible for up to 50 percent less greenhouse gas emissions per mile.” But she right away flips the argument, noting the heavier electric pickup trucks “often require bigger batteries and more electricity to charge, so they end up being responsible for more emissions than other smaller EVs. Taking into consideration the life cycle emissions per mile, they end up just as polluting as some smaller gas-burning cars.” Certainly, itÂ’s been drummed into our heads that electric cars donÂ’t run on air and water but on electricity that costs money, and that the public will be dealing with “the shift toward electric SUVs, pickup trucks and crossover vehicles, with some analysts estimating that SUVs, pickup trucks and vans could make up 78 percent of vehicle sales by 2025." No-brainer alert: Big vehicles cost more to charge. And then thereÂ’s the safety question, which was cogently addressed in the Atlantic story. Here Shao reiterates data documenting the increased risks of injuries and deaths caused by larger, heavier vehicles.

Cadillac Escalade gets $5,000 discount to ward off Lincoln Navigator

General Motors apparently isn't going to let early good reception for the redesigned Lincoln Navigator steal thunder from its own luxury SUV without a fight. It's offering a $5,000 discount on the purchase or lease of the Cadillac Escalade this month to any buyer who trades in a 1999 or newer Lincoln model, Bloomberg reports. GM spokesman Jim Cain told Bloomberg the incentive is being offered to keep prices competitive for the Escalade. The 2018 Navigator starts at $72,055, compared to $73,995 for the Escalade, but the outgoing version of the Navigator is selling for an average of around $53,000, compared with more than $80,000 on average for the Escalade, he said. The Escalade was the top-selling domestic luxury SUV in October and No. 4 in the segment, according to Motor Intelligence. It far outsold the Navigator, which last saw a refresh in 2015 and a full redesign in 2007. But Ford is hoping to gain back some ground with the new Navigator and updated Expedition, which also trails the Chevrolet Tahoe and Chevy Suburban in its segment. Bloomberg notes that one Morgan Stanley analyst estimates that GM owns a $2 billion annual pretax profit edge in the lucrative luxury sport utility segment. Our recent First Drive review called the new Navigator "far superior to its primary competitor, the Cadillac Escalade."Related Video: