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Mercedes-Benz engines with 48-volt systems coming in 2017

As part of a big green push announced yesterday, Mercedes-Benz is jumping into the world of 48-volt power. The company will launch a new family of efficient gasoline engines next year and will begin rolling out 48-volt systems with it, likely in its more expensive cars first. Mercedes will use the 48-volt systems to power mild-hybrid functions like energy recuperation (commonly called brake regeneration), engine stop-start, electric boost, and even moving a car from a stop on electric power alone. These features will be enabled through either an integrated starter-generator (Mercedes abbreviates it ISG) or a belt-driven generator (RSG). (RSG is from the German word for belt-driven generator, Riemenstartergeneratoren. That's your language lesson for the day.) Mercedes didn't offer many other details on the new family of engines. There are 48-volt systems already in production; Audi's three-compressor SQ7 engine uses an electric supercharger run by a 48-volt system, and there's a new SQ5 diesel on the horizon that will use a similar setup with the medium-voltage system. Electric superchargers require a lot of juice, which can be fed by either a supercapacitor or batteries in a 48-volt system. Why 48-volt Matters: Current hybrid and battery-electric vehicles make use of very high voltages in their batteries, motors, and the wiring that connects them, usually around 200 to 600 volts. The high voltage gives them enough power to move a big vehicle, but it also creates safety issues. The way to mitigate those safety issues is with added equipment, and that increases both cost and weight. You can see where this is going. By switching to a 48-volt system, the high-voltage issues go away and the electrical architecture benefits from four times the voltage of a normal vehicle system and uses the same current, providing four times the power. The electrical architecture will cost more than a 12-volt system but less than the complex and more dangerous systems in current electrified vehicles. The added cost makes sense now because automakers are running out of ways to wisely spend money for efficiency gains. Cars can retain a cheaper 12-volt battery for lower-power accessories and run the high-draw systems on the 48-volt circuit. The industry is moving toward 48-volt power, with the SAE working on a standard for the systems and Delphi claiming a 10-percent increase in fuel economy for cars that make the switch.

Singer Porsche, Koenigsegg, NSX: Leno's life doesn't suck

Jay Leno had quite a productive trip this year during Monterey Car Week. Not only did he get to pal around with Ian Callum and check out the Pebble Beach Concours d'Elegance, but the denim-clad comedian also headed to The Quail to talk to some prominent figures in the modern sports car scene. Capping off the fun, he got to take a drive in a Mercedes-AMG GT S, too Perhaps the highlight of this show is a nearly 10-minute interview with Christian von Koenigsegg. The founder of the Swedish hypercar company digs deep into the Agera One:1's engineering details, relating interesting facts about the aerodynamics and transmission. In addition, Leno chats with Rob Dickenson of Singer about its newly reimagined Porsche 911 Targa, and he gets the latest scoop on the Acura NSX's progress from newly promoted Acura Vice President and General Manager Jon Ikeda. If you like hearing about the nuts and bolts of sports car development, then this video can't be missed. Of course, we were there at Monterey, too, and we pointed our own cameras at some of the amazing machinery, both vintage and modern, at all the various car-focused events of the week. Take a look back at some of our own cool footage in the videos below. Related Video:

Recharge Wrap-up: Tesla firmware update videos, Mercedes S500 Plug-In Hybrid

See the Tesla Model S with Firmware 6.0 in action in new videos from Teslarati. The large software update includes improved traffic-based navigation, a calendar function, updated power management, "Location-Based Smart Air Suspension" as well as other improvements. Drivers get more route options to save energy, and more control over how the car saves energy. The car can also remember ride height settings when driving in those same locations again. Additionally, you can start and drive the car without a key, just using the smartphone app. See how it all works in the videos below, the second of which focuses on pairing with the updated phone app. The California Public Utilities Commission (CPUC) has deemed ride-hailing app Uber's carpooling service illegal. The way the UberPool service is categorized by the CPUC, charging multiple riders separate fares for a single ride runs afoul of the law. The technical details are a bit convoluted, and what supporters could deem arbitrary, but Forbes delves into the details a bit further to try to make sense of California's intentions (even considering the possibility of other ride services, such as airport shuttle companies, fueling the fire). Lyft - which operates a similar service called LyftLine - and Sidecar have also received notices from the CPUC. Read more at Forbes. China's recent enthusiasm for electric vehicles could be largely attributed to a single person, Ma Kai. After the Politburo member was named vice premier, he encouraged maintaining and increasing EV subsidies when China sought to decrease them. He also seems ready to fight for more EV deregulation to encourage more clean vehicles. Read more about Ma Kai and what he's done for China's EV legislation at Automotive News. Mercedes-Benz begins deliveries of the S500 Plug-In Hybrid this month. The high-tech luxury PHEV features energy saving modes based on driver, route and traffic, and features a haptic accelerator that can signal when the driver should ease off to save power. It's powered by a biturbocharged V6 and 85-kW electric motor. Its 8.7-kWh battery offers about 20 miles of electric driving. The S500 plug-in starts at about $146,000. Read more in the press release below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.