2002 Acura DN-X Concept
The mid-engine, all-wheel-drive DN-X concept is equipped with a unique 400 horsepower hybrid powertrain that combines a high-output, 3.5-liter, DOHC, i-VTEC V-6 engine powering the rear wheels and an advanced electric Integrated Motor Assist (IMA) system that provides additional power to all four wheels. Not only does this system provide outstanding performance, but also achieves an environmentally conscious 42 miles to the gallon.
During acceleration, the IMA system contributes supplemental torque, resulting in both lower fuel consumption and powerful acceleration. The IMA’s ultracapacitor is recharged by regenerative braking that takes energy from forward momentum and captures it during braking. This system makes an external electric power supply unnecessary.
Mated to this high output powerplant is a unique 6-speed transmission allowing the driver to chose either manual or automatic mode at his or her discretion. When placed in manual mode, the DN-X operates as a clutchless, 6-speed manual transmission similar to those found in Formula One race cars. Shifting gears is accomplished using controls located on the steering wheel. Or, if desired, the DN-X can be driven as an automatic by selecting D on the center console.
Also unique to the DN-X are new drive-by-wire systems that control throttle, brake and steering operations and eliminate the need for a mechanical connection between the cockpit and these components. Steer-by-wire utilizes two actuators in the cars front corners that receive input from the control module and turn the front wheels accordingly. Likewise, the electro-mechanical (EMB) brake-by-wire system, replaces the hydraulic system with electronic controls and actuators.
The DN-X has been given a highly rigid, lightweight state-of-the-art chassis tuned to provide better handling and aerodynamic efficiency. A wind tunnel-designed monocoque body and highly effective integrated front spoiler help to improve handling by lowering the coefficient of drag to 0.23, nearly 25 percent less than the Acura NSX.
Active Headlights further aid visibility by adjusting the angle of its beams to match the speed and direction in which the vehicle is traveling. During straight-line driving, the headlights perform like conventional systems by illuminating the road directly in front of the vehicle. When entering a curve, the upper portion of the headlights respond to steering direction and mapping information provided by the GPS navigation system to illuminate the entire road surface throughout the corner, thus minimizing blind spots.
The DN-X concept’s technical advances extend to the passenger cabin as well. The instrument panel of the DN-X, featuring interactive voice-recognition, is divided into three, easy-to-read units. A pop-up display in the center console provides access to e-mail, Internet and cellular telephone service. The LCD screen also shows navigation information from the Acura Satellite-Linked Navigation System.
|submitted by||Richard Owen|
|displacement||3500 cc / 213.6 in³|
|power||298.3 kw / 400.0 bhp|
|specific output||114.29 bhp per litre|
|f brake size||mm / in|
|r brake size||mm / in|
|f suspension||Double Wishbone|
|r suspension||Double Wishbone|