Electric Vito van hits Europe
BY TERRY MARTIN | 29th Jul 2010
Now known as the Vito E-Cell, the electric van was shown as a prototype in February at an EU Competitiveness Council meeting in San Sebastian, Spain.
There is currently no timetable for its release in Australia, but the first examples from an initial run of 100 vehicles have hit the streets in Berlin and Stuttgart as part of a four-year real-world trial with customers, and in the coming months will roll out into the Basque region of Spain, where the Vito is built in conventional and now zero-emissions form.
A spokesperson for Mercedes-Benz Australia/Pacific told GoAuto: “Currently there is no timeframe for an Australian trial of the electric Vito van, but we have requested its use when units become available.”Joining the fledgling Sprinter EV program, which has around 50 vans placed with fleet operators and public bodies in Stuttgart, the Vito E-Cell is being produced in both left- and right-hand drive configurations.
The motor has a peak power output of 70kW – down from the 90kW originally quoted – but develops a continuous output of 60kW, and has a maximum torque of 280Nm.
There are no cargo volume or payload penalties, the latter remaining around 900kg, although the desire to save space with battery installation has seen the E-Cell – which is based on the long-wheelbase standard-roof model – become the only Vito with front-wheel drive.
The E-Cell carries a few suspension components adopted from the 4x4 Vito, but otherwise the front-drive system was specifically developed for the EV. The single-speed transmission which drives the front wheels is also unique to this model.
The batteries are housed under the load compartment floor and have a total capacity of 36kWh, with around 90 per cent of this (32kWh) available to power the vehicle – a percentage Mercedes claims is “outstandingly high” compared to other EVs.
The battery pack comprises 16 modules with a total of 192 cells, all monitored by a “battery management system” that automatically deactivates the high-voltage network when the vehicle is parked to avoid unnecessary power losses and to prevent unauthorised people tampering with it.
Battery recharging takes around 12 hours from a conventional 230-volt mains power outlet, depending on the charge status, although Mercedes has set up rapid-charge stations in Berlin and Stuttgart which up the ante to 380 to 400 volts and reduce the charging time to six hours.
The onboard chargers have an output of 6.1kW, while the charging technology is advanced enough to interact with the power grid to manage charge times and so on.
The batteries are also charged using brake energy recuperation when on the move.
According to Mercedes, the Vito’s body is completely unmodified and is only distinguished from the regular model via decor.
The charging socket is located behind the fuel filler cap, while the ground clearance and approach/departure angles are “practically unchanged” which is important when driving up ramps and other applications specific to commercial vehicles.
The engine bay houses the electric motor and other components such as power electronics, transformer and mains charging unit. The 12-volt onboard network is also newly developed for the EV, while the electrical components of the drive system are all water-cooled.
A reversing camera and audible warning device are fitted standard to the E-Cell to compensate for the lack of noise from the EV.
Mercedes also claims the E-Cell is as safe and reliable as regular Vito models, with testing conducted over a range of extreme conditions. Standard safety features include dual front airbags and electronic stability control.
With the E-Cell rolling down the same line as other Vito models at its plant in Vitoria, Spain, Mercedes-Benz says “this further demonstrates that the Vito E-Cell is by no means an experimental vehicle or a prototype, but rather a van on its way to series production”.
The company has also developed specialist workshops in Germany and an emergency call centre, all with a view to series production.
The current customer trials are scheduled to run for four years or around 80,000km per vehicle, each of which is being leased in a similar way that Mitsubishi is handling the initial rollout of its i-MiEV EV hatch in Australia.
