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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.

Why all of this year's F1 noses are so ugly [w/video]

If you're a serious fan of Formula One, you already know all about The Great Nosecone Conundrum of 2014. Those given to parsing each year's F1 regulations predicted the strong possibility of the so-called "anteater" noses as far back as early December 2013. Highly suggestive visual evidence first came after Caterham's crash test in early January, with further proof coming as soon as Williams showed a rendering of the FW36 challenger for this year's championship. That car earned a name that wasn't nearly so kind as "anteater."
Casual followers of the sport - or anyone who gets the feed from this site - probably don't know what's happening, except to wonder why the current year's F1 cars are led by appendages that would make Cyrano de Bergerac feel a whole lot better about himself.
The short answer to the question of ugsome F1 noses is "FIA regulations and safety." The reason there are various kinds of ugsome noses is simpler: engineers. The same boffins who have given us advances including carbon fiber monocoques, six-wheeled cars, double diffusers and Drag Reduction Systems are bred to do everything in their power to exploit every possible freedom in the regulations to make the cars they're building go faster - the caveat being that those advances have to work within the overall philosophy of the whole car.

Cadillac, Daimler execs take swipes at Tesla

Despite the financial ties between Daimler and Tesla Motors, at least one Mercedes exec thinks the electric automaker doesn't have a bright future. And over at Cadillac, the message is that Tesla doesn't pose a threat but offers the luxury arm of General Motors more of classroom experience. The Mercedes story runs like this. Mercedes-Benz USA president and CEO, Steve Cannon, said at the New York Auto Show last week that Tesla has "no network" and only offers "little shops that don't have service capacity." He also said: "Folks are buying a Tesla now because they're kind of cool, but if you're a Tesla buyer, you have to have multiple cars. With Mercedes, you have a whole network. You've got no worries. ... Tesla is great, but you've got plenty of well-established brands that mean luxury, like Porsche or Mercedes-Benz, and how long do you think we're going to wait and let Tesla be out there alone [selling premium electric cars]?" "Treehuggers do not buy new luxury cars" – Uwe Ellinghaus For Cadillac's global chief marketing officer, Uwe Ellinghaus, Tesla's EV success represents little other than "a great opportunity and a learning exercise for all of us, and will help us traditional manufacturers to think twice about electric mobility." He added that, "I am not afraid of Tesla. ... There is no willingness to really sacrifice on the traditional qualities of a luxury car. These are not cars for treehuggers, as treehuggers do not buy new luxury cars." Ellinghaus made the comments during a panel discussion at the 2014 Automotive Forum. Perhaps the lesson of Tesla's offer of free Supercharging to Model S owners is what led to Cadillac to recently announce a deal with Chargepoint that gives ELR drivers access to that company's 16,500 charging stations. Read more details on that below. Cadillac and ChargePoint Bring EV Customer Luxury Driving Experience World's largest, most open electric vehicle charging network available to ELR drivers 2014-04-16 NEW YORK – Cadillac today announced a partnership with ChargePoint, the largest and most open electric vehicle-charging network in the world. The collaboration brings Cadillac ELR drivers immediate access to more than 16,500 charging locations on the ChargePoint network. The ELR electrified luxury coupe went on sale at the end of 2013. It embodies Cadillac's Art & Science design philosophy, combining provocative design with progressive technology.