Unfortunately for us, the world does not have that many multiple turbo setups in production so that we will review the existing ones in this story. The plan was to make a top five, or only to select the most compelling solutions. With those power plants in mind, we decided to do a roundup of all production cars available today with more than three turbochargers under their hoods. After the Veyron’s launch, BMW surprised the world with a triple turbo setup, which they employed on a diesel engine. The solution was first implemented on the EB110, but another company has further refined the idea and has replicated it in a new mass produced car, which will be featured below. Things reached a status quo for a while, and then Bugatti launched a new quad turbo engine on the Veyron. Eventually, twin-turbo cars became something mundane, and single turbo engines can be found under the hoods of modest vehicles these days.Įven the most affordable models in an automaker’s range can be ordered with a turbocharged power plant, but it is now used as a downsizing solution instead of a way to bring massive amounts of power. Some customers had the opportunity to buy a twincharged vehicle, which blended turbocharging with supercharging for optimal throttle response and performance. Those vehicles were seen as outstanding achievements when people first heard of them. Every once in a while, an automaker launched a twin-turbo or a bi-turbo setup. But, Mercedes also seems to imply that future models beyond this upcoming C-Class will use this four-cylinder hybrid powertrain as well, perhaps approaching that 643-hp figure.As the years passed, turbocharged vehicles started providing more and more power, but their delivery has become more linear than ever. All Mercedes will say is that the next AMG C-Class equipped with this E Performance powertrain will offer better power and torque figures than the V-8 it replaces. That doesn't mean that the C63 successor will have 643 horsepower, though because AMG might further limit the power of the electric motor. (You can read more about this system here) The electric motor spinning the turbocharger shaft gets power from that rear-mounted battery.ĪMG says that this 442-hp four-cylinder can be combined with an EDU offering up to 201 hp for short bursts, and 94 hp of continuous power. AMG's upcoming E-Performance models have an Electric Drive Unit (EDU) on the rear axle, which consists of a 6.1-kWh battery and an electric motor that drives the wheels via a two-speed gearbox. In order to make this electric turbo work, however, you need a high-voltage electrical system. Plus, the packaging is simpler here because you're using one device (the MGU-H) instead of two (the electric auxiliary compressor, and a traditional exhaust-gas turbocharger). The MGU-H installed in the M139 provides similar benefits in transient response and at low engine speeds, but it also provides good power when you get higher up the rev range. An electric auxiliary compressor is great at providing quick hits of boost to improve transient behavior, but it doesn't do much at high engine speeds. Think of it as a turbocharger that uses an electric motor instead of a turbine and a shaft. The difference between the electric auxiliary compressor and this electric turbocharger is that the compressor doesn't take in any exhaust air to spin the compressor. AMG engineers say this new system allows for much more precise control of boost levels, too, because the electric motor provides exact information on turbo shaft speed.ĪMG's 53-series cars use what's called an electric auxiliary compressor, where an electric motor spins up a compressor wheel to feed air into either the turbocharger or the engine directly. Transient response is also improved because when the throttle is closed, the electric motor keeps the turbo spinning even though there's less air flowing out the exhaust. This effectively eliminates turbo lag, as the electric motor can get the compressor forcing more air into the combustion chamber far more quickly than the exhaust-gas-driven turbine on its own. In this instance, AMG installed a 6kW electric motor that spins the shaft that connects the turbine and the compressor up to 156,000 RPM.
TURBO SUPER POWER BOOSTER ELEKTRISCHER TURBOLADER GENERATOR
In operating principle, this is the same thing as the Motor Generator Unit-Heat (MGU-H) used in Formula 1. Four-hundred forty-two horsepower is scarcely believable from a four-cylinder, but AMG managed it with the adoption of an electric turbocharger.
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