"The basic concept of the design of this vehicle is to achieve a cruising range of over 300km while maintaining a constant 100km/h speed. By operating the vehicle with a high efficiency, 65kW, 700 newton meter motor, battery load is suppressed. A drag coefficient of 0.19 has been achieved by minimizing air resistance."
To achieve a drag coefficient of 0.19, the vehicle body was designed with a long rear overhang and a rear cross-section resembling a narrowing fish, which provides the vehicle with adequate luggage room.
"The vehicle has a width of 1600mm, but by designing the door side impact beam on the outside of the vehicle, the thickness of each door has been reduced by 50mm each, so the vehicle width is effectively 1500mm. This was done to reduce the frontal projected area to minimize drag coefficient. Meanwhile the wheel base is 2.95 meters, giving the cabin interior space comparable to a full-size sedan."
The interior has a 19-inch display that provides not only navigation but also a rear view monitor. Because of the narrowing rear body, the rear view mirror reflects mostly the rear tailgate, so the large 19-inch display provides a nice rear view. The side mirrors have also been made just big enough to meet safety standards while reducing drag, so to supplement this side view cameras are displayed in the instrument panel to provide greater visibility.
"The fact that a cruising range of 300km has been achieved is due to the efficient but low load motor, low drag coefficient body, and energy being collected by in-wheel motors on each wheel during braking. The car is fitted with Bridgestone Ecopia tires that have lower rolling resistance than regular tires."
The SIM-LEI, developed jointly with 34 companies and research organizations, will be sold by companies that participated in development and have expressed interest in sales. SIM-Drive is hoping to achieve mass production levels in about two years.
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