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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.

Ram 1500 Rebel TRX and Jeep Grand Wagoneer | Autoblog Podcast #642

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by News Editor Zac Palmer. The big news this go-around is the reveal of the 2021 Ram Rebel TRX and Jeep previewing the 2022 Grand Wagoneer. They also discuss a mysterious BMW M8 mule and the F1-inspired Delage D12. Next, they talk about driving the Lincoln Navigator and Mercedes-AMG C 63 S Coupe before revisiting a recent "Spend My Money" segment with an update from the sender. Autoblog Podcast #642 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown 2021 Ram Rebel TRX debuts as a Hellcat-powered, desert-running Raptor killer Jeep previews 2022 Grand Wagoneer again What's hiding beneath this mystery BMW M8 mule? (Update) Historic French brand Delage returns with the D12 Cars We're Driving: 2020 Lincoln Navigator 2020 Mercedes-AMG C 63 S Coupe Spend My Money update Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:

Mercedes previews GLC ahead of June 17 reveal

Mercedes has confirmed that it will unveil its new GLC crossover on June 17, releasing this preview sketch and a few details to give us an idea of what to expect. Set to replace the outgoing GLK, the GLC will slot in between the GLA and GLE (nee M-Class) in the Silver Star automaker's growing sport-ute lineup. Its nameplate shifts to better align with the C-Class sedan and the SLC roadster that's set to replace the SLK. The crossover's design was previewed in slant-back form as the Concept GLC Coupe in Shanghai a couple of months ago, but as you can see from this sketch, it'll initially come with a more conventional roofline. In announcing the livestream of its reveal, Daimler revealed that the GLC will feature a multi-chamber air suspension, Dynamic Select transmission control, and 4Matic all-wheel drive. It also promises to consume 19 percent less fuel than the GLK it replaces. World Premiere Mercedes-Benz GLC With the introduction of the new GLC on June 17th, Mercedes-Benz presents the second generation of its mid-range SUV. The GLC retains its predecessor's outstanding off-road characteristics and combines them with an all-new design. What is more, the GLC takes comfort and agility to a whole new level: With the innovative multi-chamber air suspension AIR BODY CONTROL, unique to the segment, DYNAMIC SELECT and the 4MATIC permanent all-wheel drive, the new GLC is tailor-made for all driving situations on and off the road. State-of-the-art assistance systems and improved energy efficiency further support the new GLC's claim of setting a new benchmark in this segment. Compared to its predecessor, fuel consumption was lowered by up to 19%.