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Ferrari 458 Speciale speeds toward Frankfurt

When the doors open at the Frankfurt Motor Show in a few weeks, there'll be loads of new cars and new versions of existing ones. And as far as the latter category goes at least, this will undoubtedly be what show-goers will look forward to most.
What we have here is the Ferrari 458 Speciale - the successor to the 360 Challenge Stradale and 430 Scuderia, and the hard-core version of the 458 Italia. It was expected to carry the name Monte Carlo, but then Ferrari has never been fond of letting the press dictate what it would call its cars. But forget the nameplate: what really matters is what it's got to offer.
For starters, the award-winning, high-revving 4.5-liter V8 has been retuned to deliver 605 cv (596 hp by our standards), up from 562 hp in the standard 458, while torque remains the same at 398 lb-ft. But the other side of the power-to-weight ratio (quoted at 2.13 kg/cv) is the extra mass Ferrari has cut out of the equation: the 458 Speciale's dry weight is quoted at 1,290 kg (2,844 lbs), representing a significant drop from the 458 Italia's 1,485 kg (3,274 lb) curb weight.

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.

Despite early struggles, Ferrari F1 still has Mercedes in its sights

It would be an understatement to say that Ferrari has not had the opening to the 2016 Formula 1 season that it had hoped for. Having come in to the new campaign brazen about wanting a winning start, that Mercedes has taken all the poles and all race victories so far has come as a disappointment. There have been other headaches too – including reliability problems for both Kimi Raikkonen and Sebastian Vettel, and of course the points lost with the China/Russia incidents with Daniil Kvyat. But perhaps of more concern is that the trend of performance has not pointed towards a narrowing of the gap between Mercedes and Ferrari – as the Silver Arrows advantage seemed greater than it had been any point this season in Russia. So with the results against it, and it seemingly having no response in pace terms, the cynics are already suggesting that it is game over for Ferrari's 2016 title ambitions. But that is not how Maranello itself sees the situation: and it still has reason to believe not only that there is plenty to play for this season: but that it can take the fight to Mercedes. Pressure game Ferrari is well aware that it needs to quickly make up lost ground in both championship standings (Mercedes has more than double its point haul) and pace terms. But rather than be downbeat about what has happened, team principal Maurizio Arrivabene still senses opportunities: especially with Mercedes appearing to be on the edge in reliability terms. And it this area that he thinks needs to be exploited to give Ferrari the opening it needs. "If you have before you a team that has won four races out of four, you cannot but take note that they are very strong," he said after the Russian Grand Prix. "But if we look at what happened to [Lewis] Hamilton [with engine problems in qualifying], we see that they also have had reliability problems. "We must put pressure on them. That is our first goal. "All their problems have happened on a single car, while ours have happened on both. But there are still 17 races to go, that is something worth emphasising, so there time to make up the difference." Power battle Ferrari introduced an upgraded engine at the Russian Grand Prix that it hoped would lift it closer to Mercedes in the power stakes. But the weekend appeared to show that wasn't the case, with Mercedes' advantage on the Sochi circuit – the fourth most power-sensitive venue on the calendar – appearing bigger than ever.