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Auto blog

Is it time for American carmakers to give up on dual-clutch transmissions? [w/poll]

Last week, in the midst of Detroit's first days seeking relief in Chapter 9 of the bankruptcy code, Automotive News contributor Larry P. Vellequette penned an editorial suggesting that American car companies raise the white flag on dual clutch transmissions and give up on trying to persuade Americans to buy cars fitted with them. Why? Because, Vellequette says, like CVT transmissions, they "just don't sound right or feel right to American drivers." (Note: In the article, it's not clear if Vellequette is arguing against wet-clutch and dry-clutch DCTs or just dry-clutch DCTs, which is what Ford and Chrysler use.) The article goes on to state that Ford and Chrysler have experimented with DCTs and that both consumers and the automotive press haven't exactly given them glowing reviews, despite their quicker shifts and increased fuel efficiency potential compared to torque-converter automatic transmissions.
Autoblog staffers who weighed in on the relevance of DCTs in American cars generally disagreed with the blanket nature of Vellequette's statement that they don't sound or feel right, but admit that their lack of refinement compared to traditional automatics can be an issue for consumers. That's particularly true in workaday cars like the Ford Focus and Dodge Dart, both of which have come in for criticism in reviews and owner surveys. From where we sit, the higher-performance orientation of such transmissions doesn't always meld as well with the marching orders of everyday commuters (particularly if drivers haven't been educated as to the transmission's benefits and tradeoffs), and in models not fitted with paddle shifters, it's particularly hard for drivers to use a DCT to its best advantage.
Finally, we also note that DCT tuning is very much an evolving science. For instance, Autoblog editors who objected to dual-clutch tuning in the Dart have more recently found the technology agreeable in the Fiat 500L. Practice makes perfect - or at least more acceptable.

Ford launches pair of recalls affecting fullsize sedans and Transit Connect van

Ford has announced a pair of pretty significant recalls affecting the 2010-2013 Ford Taurus and Police Interceptor, as well as their platform-mate, the Lincoln MKS. A separate recall covers the 2014 Transit Connect. The fullsize sedans include 205,000 vehicles built at Chicago Assembly over a variety of timeframes, ranging between December 1, 2009 and November 30, 2012. The vehicles, 194,889 of which were sold in the United States, have an issue with the spring controls on the interior door handles that could cause the door to open in a side-impact crash. The Transit Connect recall, meanwhile, includes 16,100 vans built between November 6, 2013 and September 20,2014 at the company's Valencia, Spain factory. In these vehicles, the seatbelt fasteners may not have been tightened properly, which could cause them to loosen over time, a condition that's obviously bad news in the event of a crash. Ford says it is not aware of any accidents, injuries or crashes in either recall. Owners will, of course, be notified and asked to report in for inspections and if necessary, free replacements. Scroll down for the full press release from Ford, which includes the complete breakdown of dates during which the affected sedans were built in Chicago. JAN 28, 2015 | DEARBORN, MICH. FORD ISSUES TWO SAFETY RECALLS Ford is issuing two safety recalls. No accidents or injuries are attributed to either of these conditions. Details are as follows: Ford issues safety recall for certain 2010-2013 Ford Taurus, Lincoln MKS and Ford Police Interceptor sedans for interior door handle issue Ford is issuing a safety recall for approximately 205,000 2010-2013 Ford Taurus, Lincoln MKS and Ford Police Interceptor sedans due to an issue with the spring that controls the interior door handles. If the spring is unseated, the door may become unlatched in a side-impact crash, increasing the risk of injury. Ford is not aware of any accidents or injuries related to this condition. Affected vehicles include certain 2010-2013 Ford Taurus vehicles built Dec. 1, 2009 to July 31, 2010 and Feb. 1, 2011 to Nov. 30, 2012 at Chicago Assembly Plant; certain 2010-2013 Lincoln MKS vehicles built June 2, 2011 to Oct. 31, 2011 at Chicago Assembly Plant; and certain 2010-2013 Ford Police Interceptor sedans built Dec. 1, 2009 to July 31, 2010 and Feb. 1, 2011 to Nov. 30, 2012 at Chicago Assembly Plant.

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).