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Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

Recharge Wrap-up: Chevy Volt named KBB "Best Buy," slow BMW i3 sales in Germany

The Chevrolet Volt has been awarded Kelley Blue Book's Electric/Hybrid Car Best Buy for 2015. KBB cited the car's electric commuter capabilities, extended range, acceleration, design and overall value as reasons to place it above the Nissan Leaf, BMW i3 and Toyota Prius. It works well in the real world, and doesn't leave drivers with range anxiety. Plus, it's comfortable, and a fun car to drive, according to KBB. Read more at Kelley Blue Book. The BMW i3 is seeing slow sales in Germany. BMW has sold about half the number of i3s it expected in its home country, with about 1,900 sold in the first nine months. BMW projected sales of 5,000 to 6,000 in the first year. BMW partly blames long shipping times for the slow sales, and the company is offering incentives in hopes of getting more people to adopt the electric car. In the US, BMW sold more than 1,000 units each month between August and October. Read more at Green Car Reports. Audi is pursuing new carbon-neutral synthetic fuels - or e-fuels - such as Audi e-diesel. Audi's newest project uses electrolysis of water to create hydrogen, which it then reacts with CO2 extracted from the air. The result is a liquid - called Blue Crude - full of energy from hydrocarbon compounds. The Blue Crude can then be converted into a sulfur-free synthetic diesel called e-diesel. This e-diesel can be used as a drop-in fuel, blended into fossil diesel for a more renewable fuel. Read more at Hybrid Cars. Uber is partnering with Spotify to allow passengers to choose what music they listen to during their ride. Users will be able to choose their own playlist that will be ready and playing for them when they are picked up. It offers a more personalized experience from the ride-hailing service, which, according to Uber CEO Travis Kalanick, is "nirvana" for music lovers. Paying Spotify users will be able to use the feature initially in London, Los Angeles, Mexico City, Nashville, New York, San Francisco, Singapore, Stockholm, Sydney and Toronto. Check out the video below and read more at Wired. Featured Gallery 2014 Chevrolet Volt View 11 Photos Related Gallery 2014 BMW i3: First Drive View 33 Photos News Source: Kelley Blue Book, Green Car Reports, Hybrid Cars, WiredImage Credit: Chevrolet Green Audi BMW Chevrolet Transportation Alternatives Technology Emerging Technologies Electric Videos recharge wrapup

Should heavy-duty pickup trucks have window stickers with fuel mileage estimates?

If you were to stroll into your nearest Chevrolet, Ford, GMC, Nissan, or Ram dealership, you'd find a bunch of pickup trucks. Most of those would have proper window stickers labeled with things like base prices, options prices, location of manufacture, and, crucially, fuel economy estimates. But you'd also run across a number of heavy-duty trucks with no such fuel mileage data from the Environmental Protection Agency. The EPA doesn't require automakers to publish the valuable miles-per-gallon measurement for vehicles with gross weight ratings that exceed 8,500 pounds. That makes it difficult for consumers to compare behemoths powered by turbocharged diesel engines – between one another, and between smaller, gasoline-fueled trucks. Consumer Reports doesn't think it should be this way, and it's spearheading an effort (PDF link) to get the government to require manufacturers to publish fuel economy estimates. In its own testing, CR found that heavy-duty pickups powered by Ford's Power Stroke, GM's Duramax, and FCA's Cummins diesel engines (which doesn't include the Ram's EcoDiesel) get worse fuel mileage than their lighter-duty gas-powered siblings. We're not so sure HD-truck buyers are unaware of this fact – big diesels don't really come into their own until big loads are placed in their beds or attached to their trailer hitches. Under heavy workloads, the diesel trucks will almost certainly return greater efficiency than a similar gas-powered truck. What's more, HD trucks with lumbering diesels in general make the driver feel more confident while towing due to greater torque at low engine RPM than gas trucks. They also offer greater max-weight limits. Still, we agree EPA fuel mileage estimates should be offered for heavy-duty pickups. And we think the comparisons provided by Consumer Reports might be interesting to potential buyers. Click here to see the results of CR's tests, and let us know what you think using the poll below. Related Video: Featured Gallery 2017 Ford F-Series Super Duty: First Drive View 22 Photos News Source: Consumer Reports Government/Legal Green Read This Chevrolet Ford GMC Nissan RAM Fuel Efficiency Truck Commercial Vehicles Diesel Vehicles poll gmc sierra hd chevy silverado hd