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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.

Car subscription services: A slow, expensive start — but the potential is huge

Americans are used to paying for subscriptions — to magazines and cable television, for instance — but experience shows they'll cancel when the price of admission gets too high, or there are more tempting alternatives. Cord cutters ditched nearly 1.5 million pay-TV subscriptions in 2017, according to a survey by Leichtman Research Group. Cable TV started out cheap with basic offerings, and then got expensive. The auto industry's subscription offerings are new, but they're starting out costly, and not price-competitive with traditional leasing. The upside is that they take the hassle out of car ownership for busy people by letting the service take care of maintenance, insurance, licensing and taxes. And they give consumers choice, often allowing relatively painless switches between different cars in the automakers' lineup. Subscription services also point the way toward an ownership-free auto experience, and offer an easy transition to a potential world where ride- and car-sharing will be dominant. Subscriptions are here to stay, but consumers may take a while to "get" them. Lincoln's subscription service for lightly used 2015 to 2017 models, offered through the Ford-owned Canvas beginning this year, got off to a slow start. Many early subscribers canceled. Last month, Cadillac announced it would " temporarily pause" its $1,800-per-month Book subscription service for "adjustments" as of December 1. According to the Wall Street Journal, "Snags with the back-end technology used to support the service made some customer-service functions tedious and time-consuming, adding costs for the company." The challenge for automakers is to come up with a strategy that offers consumers a compelling, affordable option to regular ownership, and one that can also make a profit. I think they'll find that sweet spot, but they're not there yet. Jack Nerad, former executive editorial director at Kelley Blue Book and author of " The Complete Idiot's Guide to Buying or Leasing a Car," points out that "A lot of people expected that subscriptions would be very valuable for people who wanted inexpensive transportation, but the reality is quite the opposite. Subscriptions are offering more choices for the wealthy.

Germany says nein to EU ban on new fossil-fuel cars from 2035

BERLIN (Reuters) - Germany's government will not agree to European Union plans to effectively ban the sale of new cars with combustion engines from 2035, Finance Minister Christian Lindner said on Tuesday. In its bid to cut planet-warming emissions by 55% by 2030 from 1990 levels, the European Commission has proposed a 100% reduction in CO2 emissions from new cars by 2035. That means it would be impossible to sell combustion engine cars from then. European Parliament lawmakers backed the proposals this month, before negotiations with EU countries on the final law take place. Speaking at an event hosted by Germany's BDI industry association, Lindner said there would continue to be niches for combustion engines so a ban was wrong and said the government would not agree to this European legislation. Lindner, a member of the pro-business Free Democrats, which shares power with the Social Democrats and Greens, said Germany would still be a leading market for electric vehicles. (Reporting by Christian Kraemer; Writing by Madeline Chambers; Editing by Miranda Murray and Edmund Blair) Green Government/Legal Green Audi BMW Mercedes-Benz Volkswagen Opel SEAT Skoda