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Recharge Wrap-up: Chevy teases Bolt driving range, China pursues EV subsidy cheaters

Chevy is teasing the Bolt's driving range, which it is set to reveal on Tuesday. It will certainly be able to travel more than 200 miles between charges, but the second and third digits in that value, as it stands today, are still question marks. On its Facebook page, Chevrolet is asking fans to try to guess the official range. Of course, Tesla fans have already started posting their own snide remarks in the comments. Chevy fans are certainly hoping to see the Bolt's range eclipse that of Tesla's upcoming Model 3, which the California-based automaker puts at 215 miles. See Chevy's post on Facebook to make your own guess, or check back there (or here at AutoblogGreen) for the official number once it is unveiled. Fuel cell company PowerCell Sweden says it has signed an agreement with a Chinese company to make range extenders for commercial trucks. The unnamed Chinese customer has placed an order and signed a memorandum of understanding with PowerCell Sweden, and the partners will develop methanol reformer fuel cell range extenders for electric distribution trucks. "Our unique expertise in fuel cells and reformer technology is receiving an increasing attention worldwide and we are truly pleased to get another Chinese order," says PowerCell Sweden Sales Director Andreas Boden. Read more at Green Car Congress, or from PowerCell. China is accusing major automakers of violating EV subsidy rules. After the country's Ministry of Finance penalized five companies with fines and, in one case, revocation of production license for subsidy cheats, China has since named 20 more potential violators, including Nissan, Hyundai, JAC, and a subsidiary of BYD. Of the first five companies to be punished under the investigation, Suzhou Gemsea Coach Manufacturing is having its production license revoked, while four others, including a subsidiary of Chery, are being fined for about half of the subsidies received. The scandal is bad new for China's subsidy program, which has helped spur sales of plug-in vehicles. Read more from Fortune, or at Hybrid Cars.

NHTSA closes book on Ford, GM probes of 600,000 vehicles

US safety regulators have closed a pair of investigations into some 500,000 Ford Crown Victoria, Mercury Grand Marquis and Marauder sedans built between 2004 to 2007, and 100,000 Chevrolet Impala models from 2014. The Ford investigation focused on rusting heat shields, which may become dislodged and jam the steering, according to Reuters. The National Highway Traffic Safety Administration found that this happened very rarely. In fact, of the ten incidents filed with the government safety watchdog, six came from a single police department, which evidently had some sort of problem with its reporting. As for the Impala, the NHTSA investigators attributed two incidences of "unintended autonomous braking" to user error. In both cases, the vehicles were involved in rear-end collisions. According to GM investigators, it's believed that drivers accidentally activated the electric parking brake, causing the collisions. The vehicles in question were rental cars. Featured Gallery Ford Crown Victoria Related Gallery 2014 Chevrolet Impala View 10 Photos News Source: ReutersImage Credit: Ford, Chevrolet Government/Legal Chevrolet Ford Safety Sedan ford crown victoria mercury grand marquis

'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).