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Valeo reveals new development projects for cars

Posted: 19 Nov 2014     Print Version  Bookmark and Share

Keywords:Lidar sensor  tier one  virtual car key 

Electric supercharger: In contrast to today's typical turbochargers which are driven by the exhaust gases, Valeo's supercharger is powered electrically, allowing car designers not only to avoid the infamous turbo lag, but to completely change the engine characteristics, be it for the purpose to add power or for the purpose to enable lower fuel consumption.

At the media day, Valeo illustrated the spectrum of the options by demonstrating two vehicles that could not be more different. One was an Alfa Romeo sports vehicle, the other one the Duster SUV from Dacia, a vendor of extremely low-cost vehicles. In the Alfa Romeo, the electric supercharger provided 70 additional horsepower to the already vivacious standard version with 280hp. In the Duster, the supercharger modified the entire torque characteristic of the gasoline engine, enabling designers to equip it with a "longer" transmission originally developed for a diesel engine, resulting in about seven to 10 per cent lower fuel consumption without compromising the (albeit humble) temperament of the original vehicle.

The supercharger by itself exhibits stunning technical data: When activated, it reaches full speed of 70.000rpm within 250ms. During this period, it however loads the voltage supply with a whopping 2kW.

"Yes, this calls for buffering, perhaps with supercaps. But this is at the discretion of the OEM," said Tarabbia, adding that it is possible to modify the charger according to customer requirements, be it for an 48V supply or for a different power characteristic. In the 48V version, the supercharger is integrated in Audi's V6 Biturbo engine developed for the RS5 TDI Concept.

Electric supercharger

Figure 2: Additional horsepower immediately, no turbo lag: Electric supercharger

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