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F1 title fight gets closer | 2016 US Grand Prix recap

We ran into an old friend at the US Grand Prix: an on-form Lewis Hamilton. Reliability and proper clutch actuation helped the Mercedes-AMG Petronas driver resurrect the kind of performance we haven't seen since July at the German Grand Prix. After demolishing the previous qualifying record around the Circuit of the Americas, he put the field in his mirrors as soon as the lights went out, was never bothered by anyone behind, and crossed the finish line 4.5 seconds ahead of teammate Nico Rosberg. The drive was exactly what Hamilton needed to keep his molecule-thin Championship hopes alive. Rosberg, however, did exactly what he needed to do as well by finishing second. The German had a sketchier path to the checkered flag than Hamilton, getting pushed back to the third at the start by Red Bull's Daniel Ricciardo. Worse, Ricciardo appeared to have the pace to keep Hamilton honest ahead and hold Rosberg behind. Red Bull and Mercedes matched one another's pit stops, and it was clear the German would need more help to pass the Aussie. Rosberg didn't have to make his own luck, Ricciardo's teammate Max Verstappen made the luck for him. Ricciardo pitted on Lap 26, ceding second position on track to Rosberg. On Lap 30, Verstappen's gearbox failed while headed down the back straight. The Dutch teenager said the team told him to try to get the car back to the pits, so he dawdled through a few corners before following more team orders to pull over and park. Verstappen's parking spot and bad gearbox meant marshals couldn't push the car off the track, they needed to use a crane. That brought out a Virtual Safety Car, slowing the whole race down and allowing Rosberg to run a longer stint while losing less time on old tires. When the German came in for new tires on Lap 31 he emerged ahead of Ricciardo, and they ran that way to the end of the race, much to Ricciardo's disappointment. Sebastian Vettel claimed fourth for Ferrari, a placing perhaps due only to Verstappen and Kimi Raikkonen retiring from the race. An otherwise anonymous weekend for the scuderia called attention to itself on race day when Raikkonen had to call it a day after a botched pit stop, and Vettel couldn't make any impression on the teams ahead. Fernando Alonso rode home to a brilliant fifth for McLaren. During the first stint while rummaging around outside the top ten, the Spaniard complained about his lack of pace. By Lap 15 Alonso was tenth, on Lap 34 he was eighth.

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.

Race Recap: Abu Dhabi GP is reversals, luck, leanness and last dances

We weren't sure if Alter Ego Nico Rosberg, the one who flew into Brazil and showed Mercedes AMG Petronas teammate Lewis Hamilton that he knew also knew how to grab an entire race weekend by the scruff of the neck, arrived in Abu Dhabi. In both Friday practice sessions Hamilton showed Rosberg the way. Then on Saturday, Alter Ego Rosberg took over, taking the last Free Practice session and then pole position by a whopping four-tenths of a second over Hamilton. Thanks to the gimmicky and soon-to-be-obliterated spectre of double points, if Rosberg won the race and Hamilton finished lower than second, the World Championship would remain in German hands. Behind Hamilton came the Williams duo, again, with Valtteri Bottas ahead of Felipe Massa. Daniil Kvyat did swell to put his Toro Rosso in fifth, Jenson Button was just as swell getting his McLaren into sixth. Kimi Raikkonen outqualified his Ferrari teammate Fernando Alonso for the third time this year, the pair taking seventh and eighth on the grid. Kevin Magnussen lined the second McLaren up in ninth, Jean-Eric Vergne making the top ten for Toro Rosso in his last race for the team. To be clear, that was the final grid for race: Daniel Ricciardo and Sebastian Vettel had both qualified in the top ten but were sent to the back of the grid when their Infiniti Red Bull Racing front wings were deemed illegal. They'd start from the pit lane, which was still ahead of Romain Grosjean in the Lotus, who took so many penalties for new engine components that he started the race in Turkey. At lights-out on Sunday, well, it was pretty much lights out. That's when Hamilton got the start of the year, bolting off the line so quickly it didn't take him 100 meters to get in front of Rosberg. The Brit took Turn 1 in the lead, then laid more than a second into the German on the first lap. Rosberg kept close, about 2.5 seconds back, but it was Hamilton's race to lose and everyone knew it; barring a reliability issue or the kind of driving mistake Hamilton hasn't made all year, Britain would have its fourth double world champion. Rosberg was left asking his engineer what kind of strategy they might use to claim first place. That reliability issue did come, but it struck Rosberg on Lap 26 when his entire Energy Recovery System failed, robbing him of 160 horsepower and taxing his brakes.