Thursday, February 17, 2011

BMW ActiveE: from Monaco with batteries

The Geneva Motor Show at the gates will be full of electric cars. To the already long list of models with zero emissions in Switzerland plus the BMW ActiveE, experimental electric car based on House of Monaco 1 Series Coupe will join the 600 already MINI E for some time on the roads. The engine has an output of 125 kW/170 hp with torque of 250 Nm, available immediately (as on all electric motors) and allows the car to accelerate from 0 to 100 km / h in 9 seconds and reach speeds maximum speed (electronically limited) of 145 km.

For food, we think special rechargeable lithium ion high-voltage, developed by BMW together with SB LiMotive and are characterized by high levels of accumulation. BMW's engineers studied the best locations where to put them, so as to ensure the distribution of weights (split 50:50) and luggage capacity, which is however reduced to 200 liters.

Here is that different spaces have been exploited, such as the tail left free by the absence of the tank. Other lithium-ion cells have been integrated into the forward bulkhead of the front module. To protect the batteries, they were placed in special "cradle" of steel sheet with a separate liquid cooling system that keeps energy storage always on the optimum operating temperature.

The duration of a charge is 240 miles and a recharge takes between 5 and 8 hours, depending on the power line. The interior is different than the 1 Series Coupe combustion engine for a mere stylistic choice, or because the electric propulsion requires several tools that take more control the flow of energy and bring the whole of the driver.

For example, thanks to pressure from the PRO ECO button can be modified engine configurations and functions of the comfort of the car (air conditioning etc ...), so relying on a more efficient driving. The BMW ActiveE then have some sort of KERS system that is activated when the accelerator is released.

At that moment the electric motor takes over the role of a generator that powers the vehicle's battery with the current obtained from the kinetic energy and at the same time is to create a braking torque by which the car decelerates faster. All data collected during the test will be analyzed closely by BMW and the best solutions will be adopted by future BMW Megacity, the first power of the House of Monaco series scheduled for 2013.

No comments:

Post a Comment