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How GM engineers are using diaper 'snow' to keep you warm

Testing how snow affects General Motors' vehicles isn't really a problem right now for the company's engineers, but in the dog days of summer the process isn't exactly easy. The only real option is for them to book time at the automaker's climatic wind tunnel. However, a flash of brilliance from an engineer allows snow to be simulated regardless of the temperature outside, and the discovery is all because of his daughter's wet diaper. The realization came to GM Thermal Systems engineer Nicholas Jahn while he was swimming with his daughter and noticed how her diaper ballooned in size in the water. He found out the substance that makes this possible is called sodium polyacrylate. When the material gets wet it grows and forms fluffy flakes that are a close imitation of snow. Best of all, the stuff can be prepared easily any time of the year, and it's reusable. The engineering team uses the material to test the effectiveness of the heating systems of GM's vehicles. They spread the sodium polyacrylate over the inlets at the base of the windshield to obstruct the airflow and then crank the heater. After some time, they can see how much is being sucked into the system and design more efficient systems in the future. See how the process works in the video above and read about the diaper discovery in GM's press release below. Diapers Change Chevy Cruze Winter Warm-up Time GM validation engineer uses diaper material "snow" to reduce frigid drives 2015-01-06 DETROIT – An item commonly found on an infant's changing table is helping General Motors' engineers simulate snow year round, ensuring heating systems in cars like the 2015 Chevrolet Cruze can quickly and efficiently warm its interior. Packed snow can prevent air from entering the inlet panel at the bottom of the windshield, obstructing the flow of air into the heating system and reducing the amount of air it can push out. This can lead to less efficient warming of the car's interior and windshield defrosting. "The last thing anyone wants to do when it's freezing cold out is scrape their windshield," said Nicholas Jahn, GM Vehicle Thermal Systems engineer. "The testing we perform on the Chevrolet Cruze with the diaper material allows us to maximize the car's heating capabilities." Ironically, Jahn stumbled upon his diaper-based testing method in the middle of summer. During a swim with his daughter, he noticed her diaper multiplied in size when it came into contact with water.

Chevy Malibu Hybrid wins 2016 Connected Green Car of the Year

From the Washington Auto Show today, Green Car Journal's Ron Cogan announced three different fuel-efficient vehicle awards. They were: 2016 Connected Green Car of the Year: Chevy Malibu Hybrid 2016 Luxury Green Car of the Year: Volvo XC90 T8 2016 Green SUV of the Year: Honda HR-V The Volvo was nominated in two categories, but it did not win the Connected Green Car of the Year. Speaking of non-winners, the other green SUV finalists were the BMW X1 XDrive28i, Hyundai Tucson, Mazda CX-3, and Toyota RAV4 Hybrid. The other Luxury Green Car finalists included the BMW x5 xDrive40e, Lexus RX 450h, Porsche Cayenne S E-Hybrid, and the Mercedes-Benz C350e. Finally, the Audi A3 e-tron, BMW 330e, Toyota Prius, and Volvo XC90 T8 were the runners up for Connected Green Car. 2016 Connected Green Car of the Year, Green SUV of the Year, Luxury Green Car of the Year Winners Announced WASHINGTON, Jan. 21, 2016 /PRNewswire/ -- Green Car Journal has announced the winners of its prestigious 2016 Green Car Awards at a press conference held today during the Washington Auto Show's Public Policy Day in Washington DC. Distinguished as 2016 Luxury Green Car of the Year™ is Volvo's new XC90 T8. The Chevrolet Malibu Hybrid tops the field as 2016 Connected Green Car of the Year™ and Honda's HR-V earns Green Car Journal's 2016 Green SUV of the Year™. "These are stand-out vehicles in an increasingly sophisticated and appealing field of 'green' cars," said Ron Cogan, editor and publisher of Green Car Journal and CarsOfChange.com. "To make the cut as a finalist is a real achievement in itself considering the considerable competition in the market today. Rising to the top as award winners means these three exceptional vehicles set a benchmark in the auto industry's effort to create vehicles that are desirable and efficient, while also achieving environmental milestones so important for our driving future." The Green Car Awards are a key feature of The Washington Auto Show, the "public policy show" on the auto show circuit and one that puts a priority on safety and sustainability. "We are extremely proud of our partnership with Ron Cogan, whose eagerly anticipated suite of awards help shape the national conversation on the innovations that will drive our industry and country forward," said Geoff Pohanka, chairman of The Washington Auto Show.

Next-gen Chevy Volt gets Corvette looks, adjustable regen levels

The hood may say "full speed ahead." The regenerative braking system says "slow down a bit." One person's automotive improvements is another's identity crisis, all in a day's work analyzing the new Chevrolet Volt. The next-generation version of General Motors' first extended-range plug in will include design touches taken from to the new Chevrolet Corvette, GM's iconic sports car. Hexagonal taillights and a "taut" hood will be part of the new package, Automotive News says, citing General Motors design chief Ed Wilbur. But does that mean the Volt is shedding any of its green-car cred? Not at all, if one considers that the Volt will also let the driver adjust the degree of regenerative braking using steering-wheel paddles to dial up and recapture as much energy as possible and engage in "one-pedal" driving or turn it down for easier coasting. Check out the 55-second video below featuring GM executives Mark Reuss and Andrew Farah trying out the Volt's new regenerative-braking system that was first used on the Cadillac ELR. GM will have more details for us when it unveils the 2016 Chevy Volt at the North American Auto Show in Detroit next month. The new version is said to have a larger battery, a longer all-electric driving range and more power, but Chevy's been fairly mum on those sorts of performance details so far. Green Chevrolet Electric volt cadillac elr corvette regenerative braking