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VW decides against active-cooling system for e-Golf lithium battery

When the 2015 VW e-Golf was introduced at the LA Auto Show last year, VW said it would come with a water-cooled battery. During the Detroit Auto Show, when the car was trotted out again, VW released a new press release that stripped out the "water-cooled" language, but this change went unnoticed. During a recent VW event in Germany, a friend from Green Car Reports realized that the battery on display did not seem to have any water-cooling mechanisms. That set us off on a bit of a sleuthing and we have now learned that VW is not going to include any active cooling in the upcoming e-Golf. In fact, the company is entirely confident that this car - because of what it's designed to do - doesn't need it. "The need for a cooling system wasn't there" - VW's Darryll Harrison VW has been working on an electrified Golf for ages now, and so changes to the plan are to be expected. But battery cooling is vitally important not just to keep the car operating properly but because when things get too hot, there can be serious public relations problems. Nissan began testing a new battery chemistry for the Leaf in 2013 after an uproar from warm-weather EV drivers in Arizona who were experiencing worse-than-expected battery performance. The Leaf has always used an air-cooled battery, which is another way to say that there is no active cooling system (more details here). Tesla CEO Elon Musk once said this approach is "primitive." So, why is VW following the same path? We asked Darryll Harrison, VW US's manager of brand public relations west, for more information, and he told AutoblogGreen that VW engineers discovered through a lot of testing of the Golf Mk6 EV prototypes, that battery performance was not impacted by temperatures when using the right battery chemistry. That chemistry, it turns out, is lithium nickel manganese cobalt oxide (NMC) in cells from Panasonic. These cells had "the lowest self-warming tendency and the lowest memory effect of all cells tested," Harrison said. He added that VW engineers tested the NMC cells in places like Death Valley and Arizona and found they didn't warm very quickly either through operation, charging (including during fast charging) or through high ambient temps. "The need for a cooling system wasn't there," Harrison said.

Volkswagen planning Up! hybrid model using XL1 powertrain

Even though we've finally gotten a look at the production version of the 261-mile per gallon Volkswagen XL1, this aero-shaped two-seater was never intended for high-volume sales. Fortunately, it sounds like the same isn't true for the car's diesel plug-in hybrid powertrain, which, according to a report from AutoCar, could make its way under the hood of another Volkswagen model: the Up! minicar (shown above).
A potential Up! Hybrid would likely be able to return some of the same impressive fuel economy numbers as the XL1, but it would be a more realistic car with more passenger space and greater production capacity. The hand-built XL1 will use a 47-horsepower, two-cylinder TDI engine paired to a seven-speed dual-clutch transmission, and the 27-hp electric motor and lithium-ion battery helps deliver an all-electric driving range of 31 miles.
One of the core pillars of the XL1's design is its lightweight construction with a 1752-pound curb weight, which makes the Up! a perfect recipient for using this powertrain since it weighs just 300 pounds more. The report says that the Up! Hybrid is still in the developmental phase, so a production version isn't expected for at least another 18 months.

Bosch fuel pumps spark recall of 2015 Golf, GTI and Audi A3

A few weeks ago, BMW and Nissan both issued recalls for some of their vehicles to replace Bosch-supplied fuel pumps. The pumps had nickel plating that could flake off and cause a failure. Volkswagen Group is the latest automaker to be affected by the problem and has a campaign for the 2015 Audi A3, VW Golf and GTI. In total, 6,204 units of these models are in need of repair. The problem with the VW Group vehicles is identical to the previous recalls. It's possible for the pump's nickel plating to come off and cause increased friction. Eventually, this can result in the component's failure. According to documents from the National Highway Traffic Safety Administration (as a PDF, here), there are no reports of accidents or injuries from this issue in the VW Group models. Bosch spokesperson Linda Beckmeyer tells Autoblog that these vehicles don't all necessary share an identical fuel pump, but the parts all use the same plating process. The problem also prompted repairs of the 2014 Ford Escape several months ago, she indicated. When asked if the issue could prompt more campaigns, Beckmeyer said that she "can't speak to that" because automakers decide on the recalls. Owners should receive notice of the problem soon, but according to the NHTSA documentation, there currently aren't enough pumps to fix all of these vehicles. "Bosch is working closely with automakers regarding replacement parts," Beckmeyer said. When available, dealers will replace the components free of charge for affected customers. Related Video: RECALL Subject : Improper Plating may cause Fuel Pump to Fail Report Receipt Date: APR 17, 2015 NHTSA Campaign Number: 15V229000 Component(s): FUEL SYSTEM, GASOLINE Potential Number of Units Affected: 6,204 All Products Associated with this Recall Vehicle Make Model Model Year(s) AUDI A3 2015 VOLKSWAGEN GOLF 2015 VOLKSWAGEN GTI 2015 Details Manufacturer: Volkswagen Group of America, Inc. SUMMARY: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2015 Volkswagen Golf, GTI, and Audi A3 vehicles. Improper nickel plating of components within the fuel pump may result in the fuel pump failing. CONSEQUENCE: If the fuel pump fails, the vehicle will not start, or if the engine is running, it will stop and the vehicle will stall, increasing the risk of a crash. REMEDY: Volkswagen will notify owners, and dealers will inspect the vehicles and replace any affected fuel pumps, free of charge.