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Aluminum lightweighting does, in fact, save fuel

When the best-selling US truck sheds the equivalent weight of three football fullbacks by shifting to aluminum, folks start paying attention. Oak Ridge National Laboratory took a closer look at whether the reduced fuel consumption from a lighter aluminum body makes up for the fact that producing aluminum is far more energy intensive than steel. And the results of the study are pretty encouraging. In a nutshell, the energy needed to produce a vehicle's raw materials accounts for about 10 percent of a typical vehicle's carbon footprint during its total lifecycle, and that number is up from six percent because of advancements in fuel economy (fuel use is down to about 68 percent of total emissions from about 75 percent). Still, even with that higher material-extraction share, the fuel-efficiency gains from aluminum compared to steel will offset the additional vehicle-extraction energy in just 12,000 miles of driving, according to the study. That means that, from an environmental standpoint, aluminum vehicles are playing with the house's money after just one year on the road. Aluminum-sheet construction got topical real quickly earlier this year when Ford said the 2015 F-150 pickup truck would go to a 93-percent aluminum body construction. In addition to aluminum being less corrosive than steel, that change caused the F-150 to shed 700 pounds from its curb weight. And it looks like the Explorer and Expedition SUVs may go on an aluminum diet next. Take a look at SAE International's synopsis of the Oak Ridge Lab's study below. Life Cycle Energy and Environmental Assessment of Aluminum-Intensive Vehicle Design Advanced lightweight materials are increasingly being incorporated into new vehicle designs by automakers to enhance performance and assist in complying with increasing requirements of corporate average fuel economy standards. To assess the primary energy and carbon dioxide equivalent (CO2e) implications of vehicle designs utilizing these materials, this study examines the potential life cycle impacts of two lightweight material alternative vehicle designs, i.e., steel and aluminum of a typical passenger vehicle operated today in North America. LCA for three common alternative lightweight vehicle designs are evaluated: current production ("Baseline"), an advanced high strength steel and aluminum design ("LWSV"), and an aluminum-intensive design (AIV).

U.S. auto sales fall in July, as Detroit dials back on inventory, rental sales

DETROIT — U.S. carmakers said on Tuesday they continued to slash low-margin sales to daily rental fleets in July as General Motors, Ford and Fiat Chrysler Automobiles struggled to curb a slide in retail sales. July is on track to be the fifth straight month in which the annual pace of car and light truck sales declined from the same month a year ago, in part because of fewer fleet sales, analysts and industry executives said. July 2016 sales hit a strong 17.9-million-vehicle pace. GM said the seasonally adjusted annual sales rate fell to an estimated 16.9 million vehicles in July. At midmorning on Tuesday, GM shares were down 3.4 percent at $34.77, Ford was down 2.8 percent at $10.91, and Fiat Chrysler shares were down 0.3 percent at $12.05 in New York. GM sales dropped 15 percent from a year ago to 226,107 vehicles, as the company cut rental fleet sales more than 80 percent. The automaker said inventories of unsold vehicles at month's end were 104 days, down from 105 days at the end of June. GM has promised investors to reduce inventories to 70 days by year-end. Ford said its July sales dipped 7.5 percent to 200,212 vehicles, as it cut fleet sales more than 26 percent. Inventories fell to 77 days from 79 the previous month. Fiat Chrysler said sales dropped 10 percent to 161,477, as it also cut back sales to daily rental fleets. Among the top Japanese companies, only Toyota reported a year-to-year gain, with sales up 4 percent to 222,057 — just 4,000 units behind GM. Honda sales were down 1 percent to 150,980 — its first-quarter sales continuing to decline in North America but seeing a big increase in China. And Nissan sales fell 3 percent to 128,295. GM, Ford and Fiat Chrysler have cautioned that second-half financial results likely will be lower than first-half results, in part reflecting production cuts in North America and pricing pressures. The automakers this year have been deliberately dialing back sales to rental-car companies, which often generate little to no profit, while struggling to keep retail sales from sagging further, according to industry analysts. Industry consultant LMC cut its full-year forecast for new vehicle sales to 17 million vehicles. Automakers sold a record 17.55 million vehicles in the United States in 2016.

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.