1978 Super Beetle Convertible, Karman Ghia on 2040-cars

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VW air rule violation allegations 'stunning,' $18B fine unlikely

The big automotive news today was the US federal allegations that VW quietly and illegally installed software on approximately 482,000 diesel vehicles sold in the United States so that they would not return substandard results on government emissions tests. To say the least, this is potentially a very big deal. You can read the details of the government's allegations here. The problem seems to be with the NOx trap. Sam Abuelsamid, a former AutoblogGreen editor who is now a senior research analyst at Navigant Research's Transportation Efficiencies program, told me that there were some hints that VW's diesel emissions strategy had issues a while back. The vehicles affected by today's announcement are all equipped with the 2-liter, 4-cylinder TDI, he said. They all have the lean NOx (nitrogen oxides) trap, whereas all other current modern diesels use urea to treat NOx emissions. "When VW launched those vehicles, I went to the TDI launch program in Santa Monica and asked them if they were going to put the diesel engine into the Tiguan because that would be an ideal application," he said. "They said no, because it would be too heavy. Turns out, the NOx trap was enough to meet the emissions standards in the smaller cars, but not the Tiguan. That seems to be where the problem is, in the NOx trap. All the other big VW and Audi diesels, they use urea, just like BMW and Mercedes do." Abuelsamid added that, in California, to do an emissions test, testers don't stick a probe up the exhaust, as you would suspect. Instead, they just do a visual test to make sure nothing was tampered with and then plug a scanner into the OBD-II port to read the codes. The news today basically says that the cars were programmed to send out false codes, giving readings that testers are looking for instead of what's actually going on. "That's the background, as far as I know at this point," he said. This could be "a black eye on the auto industry." - John O'Dell Speaking at the AltCar Expo in Santa Monica just hours after the news first broke this morning, Edmunds.com's John O'Dell said the Fed's allegations were "stunning." The idea that VW might have gamed the system, he said, "underscores how important EPA clean air numbers are, that a company would allegedly stoop to this to try and meet them. Obviously, people are paying attention to that sort of thing.

EPA upping its game amid Volkswagen probe

In the wake of the Volkswagen emissions-cheating scandal, the Environmental Protection Agency vowed to crack down on the auto industry with renewed vigor. That process has started. Janet McCabe, the agency's assistant administrator, said Tuesday that the EPA has already obtained a range of vehicles for testing purposes and that its enforcement staff is working as quickly as possible to determine whether other automakers are gaming emission results. "That's another detail we'd rather be obscure about, so that we can make sure people don't know what we're doing." For now, she said the agency is focused on diesel vehicles. But the scope of the new examinations could broaden to include gasoline-powered cars. The renewed efforts could include more light-duty vehicles or focus on heavy-duty trucks. The testing procedures could use dynamometers or portable emissions equipment. Right now, pretty much everything is a possibility. "We're going to become unpredictable, we're upping our game and we're going to use the whole range of technology that we have," she said. That technology now includes a heavy-duty truck chassis dynamometer at the EPA's national Vehicle and Fuel Emissions Laboratory in Ann Arbor, MI. Officials unveiled the $3 million piece of equipment Tuesday and hailed it as the first of its kind in North America. A Freightliner Super Truck, which boosted its fuel efficiency to 12 miles per gallon with the help of a $40 million federal grant, rolled onto the dynamometer in a ribbon-cutting ceremony Tuesday. McCabe said the new dynamometer will allow the EPA to assess the performance of the entire truck – not just its engine – and help engineers test 18-wheel tractor trailers measure, hydrocarbons, greenhouse gases, carbon monoxide and more. In the past, it took about a week for engineers to remove an engine from a truck and prep it for testing. With the new equipment, drivers can open a garage door and drive the rigs straight onto the dynamometer. A wealth of new, real-time data will be helpful as the EPA works with the National Highway Traffic Safety Administration in planning for the second phase of the government's greenhouse gas emission and fuel-efficiency standards for medium and heavy-duty engines and vehicles – a process now underway. While there's been a crush of attention on Volkswagen's scheming to circumvent emissions test, in the real world, it's these medium and heavy-duty trucks that are the bigger polluters.

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.