1999 Chevy Malibu 3.1l V6 on 2040-cars

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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 files for Z71 Trail Boss trademark

Try as they might to keep their plans a secret, automakers have their hands tipped through a variety of methods – be they through loose lips, spy shots or patent and trademark applications. That's how we know, in this instance, that General Motors is working on (or at least considering) an off-road machine wearing the name Z71 Trail Boss – the name which our compatriots at AutoGuide.com tell us that GM has registered for use on light-duty trucks. Now if that alphanumeric designator sounds familiar, it should. GM has long used it to designate the off-road packages on many of its body-on-frame trucks from Chevy and GMC. These days you can order a Z71 package on the Chevy Colorado, Silverado, Tahoe and Suburban and on the GMC Canyon, Sierra and Yukon. The package typically includes components like a beefed-up suspension bits, high-capacity air cleaner and underbody protection plates. The Trail Boss designator would seem to suggest something further reaching than a suspension package, though. Just what it would entail we don't know; minds immediately start running toward Chevy or GMC going after the Ford F-150 Raptor, but we'll likely be looking at something closer to the Trailhawk packages Jeep offers on the likes of the Renegade and Cherokee. Featured Gallery 2015 Chevrolet Tahoe Z71 View 16 Photos News Source: AutoGuide.comImage Credit: Chevrolet Chevrolet GM GMC Truck SUV Off-Road Vehicles patent trademark

Recharge Wrap-up: Volt makes up third of Quebec Chevy dealerships sales, Tesla seeks Aussie talent

A Chevrolet dealership in Quebec has had the Volt make up 35 percent of its sales so far this year. Bourgeois Chevrolet in Rawdon, Quebec received recognition for the feat at the 2014 Electric Vehicle Conference, where it won the award for Leading Plug-in Hybrid Electric Vehicle Dealership. To sell that many, Bourgeois Chevrolet had to import used Volts from the US, and keeps about 50 units on the lot in various configurations. The conference also saw Park Avenue Nissan of Brossard, Quebec win the Leading Battery Electric Vehicle Dealership Award, and Loch Lomond Mitsubishi of Saint John, New Brunswick receive the award for Electric Vehicle Dealership Inspiration. Read more at Green Car Reports. Tesla Motors has begun scouting Australian engineers as other automakers shutter operations there. Ford, General Motors and Toyota have announced that they will shut down their Australian factories, leaving behind a lot of unused talent. Tesla recently held a "Recruiting Open House" in Melbourne for engineers to fill positions at its plant in Fremont, CA, where they will be paired with other Aussie engineers already on staff. Read more at Green Car Reports, or at Motoring. Electric turbochargers may come to play a key role in making internal combustion engines more efficient. Valeo recently showed an electric turbo it plans to supply to an unnamed automaker at a fuel economy showcase event at the EPA's National Vehicle Emissions and Fuel Lab. Electric turbochargers have the advantage of greatly reduced lag when compared to exhaust-driven turbos. They also work well when paired with cylinder deactivation, providing a much-needed boost when driving on a grade, which can help reduce the need for cylinders to reactivate. Independence from the exhaust system also makes it easier to package the turbocharger wherever there is room. Read more from Navigant Research. US crude oil futures have dropped to their lowest in more than two years. Saudi Arabia cut oil costs for the US and raised them for Europe and Asia as the US has increased output. On November 3, US crude futures fell as much as 2.2 percent in New York. West Texas Intermediate closed at $78.78, the lowest since June 2012. Brent crude slipped $1.08 to $84.78 a barrel. Read more at Bloomberg.