Renault Altica: 44MPG Diesel Concept with Active Airflow Management
3 February 2006
Renault has unveiled its Altica diesel concept car, a sporty sedan with an interesting subsystem that dynamically manages the airflow over the vehicle to maximize efficiency.
The Altica uses a new 2.0-liter dCi diesel that generates 130 kW (177 hp) of power and 380 Nm of torque with fuel consumption of 5.3 l/100km (44 mpg US) and CO2 emissions of 140 g/km. The car accelerates from 0 to 100 km/h in 7.5 seconds.
The engine is coupled to a six-speed manual transmission. Euro-4 compliant, the Altica comes with a particulate filter.
One of the more unique features of the car is the “Synthetic Jet” subsystem designed to optimize the vehicle’s aerodynamic performance—which, in turn assists in lowering fuel consumption.
Located at the rear edge of the roof at the point where the vehicle and the passing air flow separate, a discreet mechanical system generates jets of air which are alternately blown and sucked through a 2mm wide slit.
The Synthetic Jet system actively controls the separation of the air flow according to the vehicle’s speed, reducing drag and controlling the structure of the air flow. The Synthetic Jet, patented by Renault, can reduce the car’s Cd at 130 km/h by 15% at an energy consumption of just 10 watts.
|The Synthetic Jet in action.|
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