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VW joins Daimler's protest of new A/C refrigerant as EU deadline for compliance passes

The case of Dupont and Honeywell's refrigerant R-1234yf is doing the exact opposite of keeping things cool. The two chemical companies have spent years and hundreds of millions of dollars developing R-1234yf to replace R-134a, the new refrigerant shown to be 99.7-percent kinder to the environment than the one it is meant to succeed. Part of that development has been years of testing by governments, outside safety agencies and automakers to approve the chemical for use in cars. It passed the protocols necessary for the European Union to declare that new and significantly revised cars from 2013 onward needed to use R-1234yf, and mandated that every car as of 2017 must use it.
Enter Daimler AG. The automaker created a head-on collision test with a B-Class at their Sindelfingen test track that would lead to the pressurized refrigerant being sprayed on the engine. The result in 20 out of 20 test was that the refrigerant burst into flames as soon as it hit the hot engine, while Daimler says that R-134a does not catch fire in the same test. Another unexpected result of the R-1234yf test was the release of hydrogen flouride, a chemical far more deadly to humans than hydrogen cyanide, emitted in such amounts that it that turned the windshield white as it began to eat into the glass.
Said a Daimler engineer in a Reuters piece, "It was scarcely believable. The most complicated lab tests conducted using the most sensitive measuring instruments around found nothing and all we do is drive a car around a couple of times, open a tiny hole in the refrigerant line and the next thing you know the car is on fire." So Daimler said it wouldn't use the refrigerant, and it recalled the cars it had already shipped with R-1234yf.

Recharge Wrap-Up: No new Smart Roadster, Africa to UK on one tank, Duke's efficient axial engine [w/videos]

Smart will not make another generation of the Roadster, but a Smart SUV might be in the cards. According to Smart's CEO, Annette Winkler, "The Roadster isn't a profitable business case. Everybody is keen on the car, but nobody wants to pay the bill." What Car? states that Smart is likely planning a baby SUV to take on the Nissan Juke and its ilk. But for the immediate future, Winkler says Smart "must focus on how we can maximize potential of the Fortwo and Forfour. That is strategy number one." Read more over at What Car?. A Mercedes-Benz E300 Bluetec Hybrid made the 1,223-mile trek from Africa to the UK on just one tank of fuel. Driven by Andrew Frankel of Autocar, the diesel hybrid left Tangier, Morocco with a full tank of gas (using the optional 80-liter fuel tank), and arrived in Goodwood with the car indicating 100 miles of range left. Frankel and his co-driver averaged 61.2 miles per gallon (73.6 mpg UK) on the intercontinental journey through four countries, despite elevation changes and a traffic jam. See the first video below for more information, or check out the article at Carscoops. Duke Engines promises simplicity and efficiency from the axial engine it's developing. Rather than lining up the cylinders, this engine arranges them in a circle, which allows Duke to avoid unnecessary weight. The five-cylinder, four-stroke motor manages the same amount of powerstrokes per revolution as a standard six-cylinder mill, but weighs 30 percent less. It also has much fewer parts, says Duke. Its high compression ratios mean more power with less fuel, which adds up to more efficiency and fewer emissions. The second of the two videos below, which we first found over at Sploid, explains Duke's axial engine. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Related Gallery Smart Roadster Patents Related Gallery Mercedes-Benz E400 Hybrid and E300 BlueTec Hybrid: Detroit 2012 Photos View 13 Photos News Source: Carscoops, What Car?, Sploid via World Car Fans Green Mercedes-Benz smart Fuel Efficiency Technology Emerging Technologies Diesel Vehicles Hybrid Videos recharge wrapup diesel hybrid smart roadster

Why it's difficult to accurately test the efficiency of a plug-in car

When it comes to electric vehicles and plug-ins in general, the Environmental Protection Agency-certified range is a hugely important number. While actual range anxiety is largely psychological, the magic number does provide a point of comparison of buyers considering one EV over another. The driving distance is also often touted by automakers when marketing their models. Unfortunately, as Green Car Reports finds in a recent deep dive, the way the EPA calculates the figure is a convoluted mess, and discovering the reasons why is definitely worth the read. The issue isn't about bad science but instead comes down to vague wording. The EPA's accepted range test is sourced from an evaluation called J-1634 from the Society of Automotive Engineers, and it seems to provide balanced results for vehicles that automatically reach a single state of charge when plugged in. However for models with multiple charge settings, the situation gets complicated very quickly. Of course, these modes are often created in the software, meaning that a car's certified driving distance can change with just a few taps of the keyboard without the real world results owners might experience actually changing. By showing the test's effects on the certified range for the Tesla Model S, Nissan Leaf and Mercedes-Benz B-Class Electric Drive over the last few years, Green Car Reports makes a compelling argument that it's the evaluation that needs to change. Thankfully, it appears that the solution is a very simple one. Get the details here.