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GM Ultium tech can scavenge heat from everywhere, even you

GM likes to give us tidbits about its Ultium platform from time to time, and today it’s telling us about the platformÂ’s ability to capture waste heat from the propulsion system. In addition to capturing from the propulsion system, it can also capture humidity from both inside and outside the vehicle and even from passengersÂ’ body heat. Yes, you, your family and/or your friends are a usable heat source as far as GM EVs are concerned. It then deploys the heat in an advantageous way. If at this point, youÂ’re screaming, "Heat pump!" youÂ’d be right. WeÂ’re talking about an elaborate heat pump system that GM is using for its Ultium-based vehicles. Every Ultium-based GM vehicle gets this system that is covered by 11 patents and four publications. The waste heat it collects is used in a number of ways, but its primary use is to heat the cabin quickly and efficiently. GM claims it can heat the cabin of its Ultium-based vehicles quicker than vehicles with traditional internal combustion engines. Plus, when put to use, GM claims that using the heat pump provides its EVs with up to 10% more range than theyÂ’d have without. Beyond heating the cabin, the heat pump is capable of putting waste heat to use by preheating the battery prior to charging so that you can charge quicker. The system can even cool the propulsion system in preparation for Watts to Freedom (WTF) launch control starts. GM says this was vital in helping the Hummer EV achieve its bonkers 0-60 mph time of about 3 seconds. “Having a ground-up EV architecture gives us the freedom to build in standard features like UltiumÂ’s energy recovery capabilities,” said Doug Parks, GM executive VP of global product development, purchasing and supply chain. “This helps us squeeze more efficiency, performance and overall customer benefit out of our EVs.” GM says itÂ’s been developing heat pump technology since the EV1 and its heat pump. This is the modern evolution of that technology, and GM says itÂ’s going to be implemented in every Ultium-based vehicle as a standard feature. Related video: Green Cadillac Chevrolet GM GMC Technology Electric Future Vehicles

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

2022 GMC Hummer EV could get a rival from China's Dongfeng

The popularity of GMC's Hummer EV hasn't gone unnoticed in China. State-owned carmaker Dongfeng is reportedly planning to launch an electric version of the M50 Warrior, a Hummer-like off-roader, that will inaugurate a new sub-brand dedicated to battery-powered trucks. Without citing sources, website Car News China wrote that the division will be called M, a letter that stands for something completely different if the cars that you're into come from Munich. Executives are initially planning three models called M18-1, M18-2, and M18-3, respectively. The M18-1 will reach the market first, and it's described as an electrified M50 Warrior (pictured) with seating for six. Dongfeng will build the M18-1 on a new architecture called MORV that was developed in-house. The powertrain will develop up to 1,072 horsepower, which is 72 horses more than the most powerful version of the Hummer EV, yet the zero-to-60-mph time will check in at under 5 seconds, which is roughly 2 seconds more than the GMC. It will offer around 310 miles of range thanks to a 140-kilowatt-hour battery. Another interesting point is that the M18-1 will supposedly be much lighter than the Hummer EV — it will even weigh less than the gasoline-powered M50 Warrior that it's based on. It will tip the scale at around 6,900 pounds and stretch about 205 inches long, compared to 9,046 pounds and 217 inches for the Hummer. Of course, these numbers are purely hypothetical until the truck starts rolling off the assembly line. Speaking of, production is tentatively scheduled to start in 2023 in a factory that's currently being built in China. Dongfeng expects to sell approximately 4,160 units per month, though nothing suggests that the M18-1 will venture onto the GMC Hummer EV's home turf. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Green GMC SUV Electric Off-Road Vehicles