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Recharge Wrap-up: Chevy Volt class action suit proposed, Tesla stock could outperform in 2015

A class action suit has been proposed against General Motors for a steering problem in the Chevrolet Volt. The plaintiffs claim that a defect can cause the steering to freeze intermittently, and that General Motors either knows or should have known about the problem. The case, filed in New Jersey, also claims that defective parts are replaced with the same or similar parts, which are also defective. The plaintiffs say that claims for the 100-plus-member class exceed $5 million. Read more at Law360 or at BigClassAction. Tesla Motors stock (TSLA) has risen after weeks of losses. It gained 5.4 percent during the week ending December 19, when it closed at $219.29 per share. Since then, it rose slightly more, closing at $222.26 on December 24. Morgan Stanley lowered its target price on Tesla stock from $320 to $290, predicting lower sales on the upcoming Model III than expected before, but still called Tesla a good long-term investment. Analysts at CNBC predicted Tesla to be the best performing stock of 2015. Read more at ETF Daily News. Oslo- and New York-based architecture firm Snohetta has designed a zero-emissions house that also charges an electric car. The ZEB Pilot House, built in Larvik, Norway, uses a solar panel on the roof to power the house, which also provides enough excess energy to charge an EV. To make the most of energy most efficiently, the house uses smart technology to use as much energy as it can once it's harvested. This means one can turn on appliances like the washing machine remotely while the sun is at the optimum angle in the sky - perhaps during mid-day when the residents are at work. The house also uses organic materials and is designed to save as much energy as possible. Read more at Wired.

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging

Chevy Volt, Nissan Leaf sales show big drops in September

As most readers likely know, it's not just lower gas prices that are affecting plug-in vehicle sales. The two long-time sales leaders in the US - the Nissan Leaf and the Chevy Volt - are getting long in the tooth. First introduced in late 2010, the vehicles have been updated here and there since then, but recent sales figures have been lagging behind where they were in 2014. This trend continued in September, with sales of both vehicles down in a big way compared to last year. Sales of Nissan Leaf totaled 1,247 for the month of September. This is down a whopping 56.7 percent from September 2014, but thankfully the year-to-date sales are not quite as negative. So far this year, Nissan has sold 13,630 Leafs, which is "just" 37.5 percent lower tan the YTD total at this point in 2014 (21,822). This decrease swims against the overall direction of Nissan's September sales, which were up 18 percent over last year and set a new September record. The Volt sold 949 units last month, down 31.9 percent from last September. Year to date, the Volt has sold 9,264 units, which is 36.3 percent lower than the number of Volts that were sold in the first nine months of 2014 (14,540). This downward trend might be coming to an end soon. The new Chevy Volt will go on sale in 11 US states later this fall, and the 2017 model will be available nationwide next spring. An updated Leaf for the 2016 model year also offers more miles – 107, vs 84 in the 2015 version – so potential customers who have been waiting for the latest and greatest will soon not have any excuses. We'll have our broader look at green car sales in the US up soon. Green Chevrolet Nissan Electric Hybrid ev sales hybrid sales volt