Frankfurt 2009: Volkswagen E-Up! Concept

Volkswagen has introduced the E-Up! Concept electric vehicle at the 2009 Frankfurt Motor Show.

The pure electric E-Up! concept car designed under the leadership of Dr. Ulrich Hackenberg, Member of the Board of Management, Volkswagen Brand, and Head of the Development business area, is based on modules of the New Small Family anticipated in the year 2011, but at a length of 3.19 meters it is even more compact.

A production version of the electric E-Up! Is set to hit the streets in 2013.

The 135 km/h fast 3+1 seater is driven by an electric motor with a peak power output of 60 kW (continuous power: 40 kW).

The motor of the front-wheel drive car, which is mounted in front, develops a maximum torque of 210 Newton-meters right from rest. The driver activates forward or reverse gear via a rotary knob in the centre console. The fact that the E-Up! will also quite clearly offer driving enjoyment is demonstrated by a look at the car’s classic 0 to 100-km/h sprint time: 11.3 seconds.

The E-Up! develops even greater responsiveness in the intermediate sprint from 0 to 50 km/h in city driving: 3.5 seconds. This dynamic performance is based first on the electric motor’s excellent torque characteristic and second on the low kerb weight of the E-Up!, which is just 1,085 kilograms.

The car’s low weight is quite astounding, given the fact that 240 kilograms are taken up by the lithium-ion battery. The implemented battery’s energy capacity of 18 kilowatt-hours (kWh) enables driving distances of up to 130 kilometers, depending on driving style – enough for the city and the drives of most commuters. The E-Up! will be "refueled" in the garage at home, in a parking structure or on the road at one of the future municipal recharging stations that will be enabled by chip card. Depending on the available charging infrastructure and the battery’s momentary charge state, the storage battery could be charged to up to 80 percent of its total capacity within an hour.

If the batteries are recharged in a home garage, for example, by plugging it into a 230-Volt household outlet, this would take a maximum of five hours. Generally, off-peak night-time electric rates are very inexpensive. So refueled at night the E-Up! could be driven 100 kilometers for just two Euros in electricity costs (about 14 Euro cents / kWh).

The batteries themselves are housed in the underbody of the E-Up! To optimally distribute the weight of the battery system, it is housed in a special, crash-protected tray in the underbody frame. Air cooling ensures a constant heat balance within the batteries. The fans and heat exchangers needed for this are housed in the front section of the underbody.

The teams of Concept Development (headed by Ralf-Gerhard Willner) and Engine Development (headed by Dr. Jens Hadler) integrated all important drive assemblies and auxiliary assemblies in the engine compartment at the front end. The design of an integrated form of the electric drive made a key contribution toward reducing weight and space requirements for the drive unit. Background: All components important to the powertrain are unified in compact form in the so-called integral drive. In this unit, the electric motor, together with the transmission and differential, form the centrepiece of this drive. Energy is supplied via a high-power pulse-control inverter, which is combined with the 12-Volt electrical system DC/DC converter and the charger to form the compact integral drive. At 140 kilograms, the integral drive is also very lightweight. To summarize its advantages: low space requirement, ideal acoustic comfort, high torque and power development and strong driving performance in the city. So the system fulfils the requirements of an innovative electric drive in a nearly ideal way.

The concept car has a touch-screen based HMI (Human Machine Interface) with intelligent E-Up! specific indicators and assistance functions. During navigation, the system continually monitors the momentary load state of the batteries, for example, as well as activated energy consumers such as lights and air conditioner, momentary traffic data, elevation profiles of potential routes and the locations of available charging stations. The driver can display these "filling stations" at any time; available charging stations may be reserved within a defined reservation time period.

The charging process can also be precisely planned to the minute via the HMI. This lets users charge the E-Up! during a specific time period in which electricity is available at special low rates. The charging process can be activated at any time via an intuitively operated application installed on an iPhone or similar mobile device, even from outside of the vehicle. Even more: From the application users can query the momentary charge status and vehicle location (the latter via map display) or simply check whether the car is locked. Moreover, to preserve vehicle battery power the program lets users pre-condition the E-Up! interior. This involves cooling or heating the car’s interior as long as the car is still connected to the charging station and is drawing its electrical power from the electrical grid.

E-Up! - Technical Data