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Kimi Raikkonen fastest in first Belgian Grand Prix practice

SPA-FRANCORCHAMPS, Belgium — Ferrari's Kimi Raikkonen lapped fastest in first practice for the Belgian Grand Prix on Friday but Mercedes, and title contender Lewis Hamilton, still looked every bit the team to beat. A four-time winner at Spa, and with a contract extension for 2018 announced earlier in the week, Raikkonen lapped the longest track on the calendar with a best time of 1 minute 45.502 seconds. The 37-year-old Finn's time was set on the quickest ultra-soft tires, however, while Hamilton — preparing for his 200th race start — was second-fastest and only 0.053 slower on the soft compound. Hamilton was 0.092 faster than Ferrari's world championship leader Sebastian Vettel, with the German third on the timesheets and also setting his time on the quickest but least durable tire. Vettel leads Hamilton by 14 points with nine races remaining. Red Bull's Dutch teenager Max Verstappen, Belgian-born and attracting a huge traveling support of orange-capped fans, was fourth fastest with Australian team mate Daniel Ricciardo fifth. Hamilton's teammate Valtteri Bottas, who bumped into the tire barrier after going off across the gravel and damaged his front wing, was sixth fastest. The session was halted after 15 minutes when Brazilian Felipe Massa, who missed the previous race in Hungary after feeling dizzy in practice, crashed heavily into the tire barrier at turn seven out of Les Combes. He was taken to the medical center for checks, before returning to the pitlane, with his team facing a long job rebuilding the car. The session resumed after a 10 minute stoppage. Williams said the chassis would have to be changed and the team still hoped to get the car back out on track for some of the day's second session, even if that looked like being optimistic. Fernando Alonso suffered a lack of power in his McLaren, but still ended up 13th fastest. Belgian team mate Stoffel Vandoorne, who will start his home race last on Sunday thanks to a 35 place penalty due to a power unit change, was 10th. Reporting by Alan BaldwinRelated Video: Image Credit: Reuters Motorsports Ferrari McLaren Mercedes-Benz F1 Lewis Hamilton Sebastian Vettel Kimi Raikkonen Max Verstappen Valtteri Bottas belgian grand prix

Track lapping in Ferrari's new 488 GTB

With the floodgates opening on impressions about Ferrari's latest 488 GTB, Chris Harris is the latest person to climb into the driver's seat and give his initial opinions on the Prancing Horse's latest turbocharged effort. The 488 GTB is a hard vehicle to pin down, though. It looks vaguely like the naturally aspirated 458 but practically every component is thoroughly revised. While the headline-grabber is the 660-horsepower, 3.9-liter, twin-turbocharged V8 that's positioned behind the driver, the coupe also benefits from new adjustable dampers, upgraded brakes, and more. To figure things out, Harris laps the Prancing Horse around the track and eventually moves to some tight, Italian backroads. Of course being a video from Chris Harris on Cars, you can expect some big, smoky slides in addition to erudite thoughts on this Ferrari with forced induction.

Ferrari patents a fancy and fascinating electric turbocharger

While turbocharging has improved vastly over the years, and it has enabled cars to become both more powerful and more efficient, there's always room for improvement. Turbochargers scavenge exhaust gas pressure and use it to turn a compressor that forces intake air into the cylinders. However, as the patent points out, this means the intake compressor and the exhaust turbine are physically coupled, and have to spin at the same rate. Ferrari's design divorces the two, and it's a happy breakup. The key is hooking up the two components of the turbo to their own individual electric motors, with an energy storage device in between. It's different than the electric supercharger systems you have seen on certain Audi products, for example. Those systems recover energy like a hybrid, store it, and then use it to drive an intake compressor. It supplements conventional turbochargers that harvest energy from the exhaust. In systems like Audi's, the electric supercharger is supplementing the sequential conventional turbochargers when they're not operating efficiently, at very low RPM in particular. It works well, but it's complicated, and it is a workaround for the limitations of a conventional turbocharger. See below for an animation of the Audi system. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Usually, optimizing a turbo is a compromise between figuring out what RPM is ideal for each side to spin at to generate power. A smaller compressor generates boost more quickly, but loses efficiency at higher RPM. But there's way more energy in high-RPM exhaust gasses. By hooking up the turbine to an electric motor instead, you can harvest energy from the exhaust throughout the rev range, and particularly when the engine is pushing lots of gasses through. And you can store that energy in a battery if it's not needed at that moment. The intake-side compressor also has a reversible electric motor attached. It is not physically connected to the turbine, so it can operate at any time the computers decide it's beneficial. As engine RPM increases, the compressor doesn't have to increase its speed beyond its optimal range, so there's less energy wasted. And at low RPM situations, when a conventional turbocharger wouldn't have enough exhaust gas passing through its turbine side to generate useful boost in the compressor side, the electric motor can spin up Ferrari's divorced compressor to provide some boost.