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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.

GM uses wind power to build SUVs, trucks

This week started with a chill, as the Intergovernmental Panel on Climate Change issued a dire report with scientists warning, "The world we know today is not the world we will see in 50 years," with temperatures rising at their current rates. In the meantime, the trend toward purchasing more SUVs and crossovers continues. Most automakers, though, have set goals toward more sustainable production. That includes General Motors, which, somewhat ironically, plans to use wind power to produce many of its vehicles, including pickups and full-size SUVs. As the Detroit Free Press reports, several wind farms are coming online to support cleaner production as part of a partnership between GM and energy producer CMS Enterprises. At the beginning of October, the 100-megawatt Northwest Ohio Wind Farm began producing energy, supplying GM operations in Ohio and Indiana, where manufactured vehicles include the Chevy Cruze, Chevy Silverado and GMC Sierra. Hilltopper Wind Farm in Illinois will begin producing another 100 megawatts for GM manufacturing in the region. In Texas, where GM builds the Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon, GMC Yukon XL and Cadillac Escalade, the automaker is getting 50 megawatts from Cactus Flats Wind Farm beginning October 9. Using wind power isn't just about being green, but also for the sake of price stability. As Rob Threlkeld, GM's global manager of renewable energy told the Free Press, "You don't get the price spikes this way, like you do with fuel, and it reduces the environment footprint of the vehicle you're driving." Threlkeld said that renewable energy has already meant "millions of dollars in savings" for GM. GM plans to power all of its global operations with renewable energy by 2050. This week, the automaker was ranked 76 on the EPA's "National Top 100 List" of green manufacturers. It was the only automotive company listed. Related Video: News Source: Detroit Free Press, GM, EPAImage Credit: GM Green Plants/Manufacturing Chevrolet GM GMC Truck SUV wind power sustainability

GM posts $4 billion third-quarter profit thanks to trucks and SUVs

DETROIT — General Motors is posting huge third quarter numbers, pulling in $4 billion in profit over three months after losing money due to the virus outbreak. GM's adjusted earnings were $2.83 per share, easily outpacing Wall Street's per-share projections of $1.43, according to a survey by FactSet. Revenue of $35.5 billion also edged out most expectations. Shares jumped almost 6% before the opening bell Thursday. The company swung back from a $806 million loss in the second quarter, when it was restarting factories shuttered for safety during the early stages of the pandemic. The Detroit automaker joined most global automakers in reporting better-than-expected earnings from July through September as sales across the globe started to rebound from coronavirus lockdowns, especially in China. GM sales in China jumped 12% in the third quarter, with sales of its Buick and Cadillac brands both rising more than 25%. In the U.S., GMÂ’s most profitable market, sales fell 9.9% in the third quarter compared with a year ago, but were a dramatic improvement over the 34% drop in the second quarter. Sales improved sequentially each month, the automaker said, an encouraging trend. GMÂ’s profit was boosted by higher-priced pickup trucks and large SUVs, which have seen strong sales in the U.S. through the pandemic. It was the best quarter on record for GM's Chevrolet Blazer. Sales of the Cadillac XT6 spiked 45% in the U.S. over last year. Large pickups also sold well. GM also said it was pumping $2 billion into its Spring Hill, Tennessee manufacturing plant to push its transition to produce electric vehicles. Last week, crosstown rivals Fiat Chrysler and Ford reported strong third-quarter net income. FCA said it made $1.4 billion for the period, while Ford earned $2.39 billion. Related Video: Earnings/Financials Buick Cadillac Chevrolet GM GMC