Car enthusiasts have long been waiting to learn the full details of the prototype electric version of the SLS AMG. Mercedes-Benz has recently revealed that the SLS AMG E-CELL, which is part of the AMG Performance 2015, is powered by four synchronous electric motors that provide an overall output of 392 kW (533 hp) and a torque of 880 Nm.
The use of these motors results to the improvement of fuel consumption and the decrease in CO2 emissions. To reduce unsprung masses and to use one transmission per axle, the 12,000 rpm motors are placed close to the wheels instead of in the wheel hubs.
The supercar can sprint from zero to 62 mph (100 km/h) in 4 seconds flat, faster by 0.2s over the time recorded by the 571hp combustion engine version of the vehicle. Mercedes believes that drivers will especially like the vehicles' instant torque originating from the electric units, as well as by the "intelligent and permanent" four wheel drive system.
The vehicle is equipped with a liquid cooled high voltage lithium-ion battery that utilizes a modular design (for optimal weight distribution), which produces 48 kWh of power and a capacity of 40 Ah. The battery's 324 lithium-ion polymer cells can offer a maximum electric load potential of 480 kW.
The 400-volt system utilizes a parallel circuit and is charged by energy recuperation while the car is in the braking phase. The car has two separate cooling circuits -- one for the battery and another for the electric motors and other hardware.The battery includes an electric heating element that raises the temperature when needed.
The car's AC can be used for more cooling power. The second one handles the four electric motors and the added hardware. For optimum weight distribution, AMG's engineers split the battery into separate modules found in front of the firewall, in the center tunnel and behind the seats. The solution also lowers the center of gravity of the car. Having an electric drivetrain requires that the front axle double wishbone suspension be replaced with an independent multilink with pushrod damper strut one.
The vehicle is also equipped with an electro-hydraulically assisted steering system. Matching the performance of the motors is the braking system, which features big-sized (402x39 mm -front & 360x32mm rear) carbon-ceramic brakes.
On the E-CELL, expect to see several exterior changes that include LED headlights, a wider radiator grille, new bonnet and side air openings. It also has a matte finish for the parts that come in chrome/silver on the standard SLS AMG. Improved aerodynamics is seen on this supercar, due to its use of a redesigned front apron, an extendable front air splitter, an automatic rear spoiler and a rear diffuser that utilizes a steeper angle. The supercar rides on 19 inch 10 spoke alloy rims fitted with 265/35 (front) and 295/30 (rear) tires.