Monday, March 14, 2011

Smart fortwo electric drive, 2010

Smart fortwo electric drive, 2010



Electric drive taken into account in the very first concept
Electric drives have been part of the smart concept right from the start. The later integration of the components needed for electric drive was planned at a very early stage. For example, there is space for the battery in the underfloor between the axles where the tank is located in other smart models . The electric drive module does not limit the space available in the smart fortwo electric drive in any way; there is just as much interior and luggage compartment space as in a smart fortwo with a combustion engine.

Powerful drive
A 30 kW magneto-electric motor is installed at the rear of the new smart fortwo electric drive and reacts immediately and without delay. Powerful torque of 120 Newtonmetres is immediately available. This results in a surprising amount of power when pulling away. The smart fortwo electric drive accelerates from 0 - 60 km/h in 6.5 seconds - just as quickly as a petrol model which it initially leaves behind it. Its maximum speed has been deliberately limited to 100 km/h, a suitable speed for the city. Thanks to the power characteristic of the electric motor, the smart fortwo electric drive needs just one single fixed gear ratio. There is no need for any gear changing - a major advantage in dense city traffic. To reverse, the engine's direction of rotation changes.

The second generation smart fortwo electric drive is powered by a lithium-ion battery from Tesla Motors Inc. with capacity of 14 kWh. It is simple to charge at any fused 220 Volt socket.

A fully charged battery is sufficient for up to 115 kilometres of driving fun (NEDC). This range is more than enough for city traffic as studies have shown that cars drive an average of 30 - 40 kilometres per day in towns and cities. For this, the vehicle only needs to be charged for three hours. Plugging the car in overnight will fully recharge the battery.

Electronics optimise the battery charge status and power consumption
Special electronics ensure that all is well with the battery. The electronics also monitor the charging process and control the capacity display.The vehicle's power electronics supply the electrical system with electric current from the battery via a DC/DC converter. In addition, they also control the heating and air conditioning, for example, to minimise the strain on the battery. Clever drivers can air condition their smart fortwo electric drive in advance as long as their vehicle is being charged at home - the long-standing dream of stationary cooling becomes a reality! No other car offers this comfortable option.

The new second generation smart fortwo electric drive is based on the smart fortwo coupé/cabrio passion. As well as air conditioning with automatic temperature control all the equipment features of the popular passion equipment line are included. In addition to the battery indicator, an ammeter shows the consumption and the recuperated energy.

Very low costs
Based on German electricity prices it costs approximately two euros to drive the smart fortwo electric drive for 100 kilometres (even cheaper with off-peak electricity). This is less than the price of two litres of petrol. Electric power is much cheaper in lots of countries. The maintenance costs are considerably lower than those of a smart with a combustion engine as the battery, motor and other components of the electric drive are maintenance-free.

In addition to the low running costs, there are further cost advantages in lots of countries and cities. For example, drivers of a smart for two electric drive are entitled to national subsidies, tax advantages or exemption from local toll charges such as the city centre congestion charge in London.

The smart for two electric drive in major cities in Europe and the USA
From the end of 2009 the smart fortwo electric drive will be delivered to selected leasing customers. Leases will be offered for a period of four years and 60,000 kilometres. The first vehicles are destined for the "e-mobility Berlin" project . Here, in cooperation with the energy provider RWE and with the support of the German government and the city of Berlin Daimleris creating the conditions for running battery-driven vehicles with no local emissions.This includes setting up a network of electricity charging stations that enable intelligent communication between electric vehicles and the power network so that the battery can be charged when electricity is cheapest.

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