Mercedes-Benz At The 2009 IAA: The Mercedes BlueZERO E-CELL PLUS

The near-series Mercedes-Benz Concept BlueZERO E-CELL PLUS electric gives environment-friendly electric mobility in the city

The near-series Mercedes-Benz Concept BlueZERO E-CELL PLUS electric car combines environment-friendly electric mobility in the city with unrestricted suitability for long-distance driving. This is made possible by the combination of the battery-electric drive with a combustion engine. The range extender gives the BlueZERO E-CELL PLUS a total range of up to 600 kilometres, with 100 kilometres thereof solely under electric power and thus free of local emissions.

The BlueZERO E-CELL PLUS is part of a family of modularly constructed electric cars, which will enable Mercedes-Benz to meet all customer requirements for sustainable mobility in the future. In this variant of the concept vehicle, the electric motor of the purely battery-powered BlueZERO E-CELL is combined with an additional three-cylinder, turbocharged petrol engine. Putting out 50 kW, the compact combustion engine is installed in the area of the rear axle and can charge the battery while the car is being driven. The CO2 bonus for the battery-electric driving mode reduces the vehicle’s emissions to only 32 grams of CO2 per kilometre. The range extender enables the BlueZERO E-CELL PLUS to drive for up to 600 km, of which up to 100 km can be driven in electric mode with zero local emissions. The long combined range makes the BlueZERO E-CELL PLUS fully suitable for everyday use and assures that the customer will reach his or her destination even with a depleted battery. After all, the car can be refuelled quickly and easily at any normal filling station.

Battery with superior lithium-ion technology

During rapid charging with a charging capacity of 20 kW, the high-performance, 18 kWh lithium-ion battery of the BlueZERO E-CELL PLUS can store enough power within around 30 minutes for a 50 kilometre cruising range. The complete electric range of 100 kilometres requires a charging time of somewhat more than an hour. Charging time with a standard charge cycle at a conventional household outlet with 3,3 kW is approximately 6 hours. Special on-board electronics support the intelligent charging stations and billing systems used by electric fuelling stations. Advantages of lithium-ion batteries compared to other battery technologies include their compact dimensions, high output and energy density, high charge efficiency and long service life.

Concept BlueZERO – the triad of electric mobility

Mercedes-Benz is showing the way to environmentally compatible electric mobility with the near-series Concept BlueZERO. The vehicle’s intelligent modular concept enables a single vehicle architecture to be used to create three models with different drive system configurations.

  • The BlueZERO E-CELL PLUS is equipped with an electric drive and a supplemental combustion engine with an electrical generator (range extender). The car has a total range of up to 600 kilometres, of which up to 100 kilometres can be covered solely on electricity.
  • Originally presented in Detroit at the beginning of the year, the BlueZERO E‑CELL is propelled exclusively by a battery-powered electric drive that allows the car to travel up to 200 kilometres on a single battery charge and completely free of local emissions.
  • The third drive version is the fuel cell powered BlueZERO F-CELL, with a range of about 400 km on electric power and therefore also without any local emissions.

All three BlueZERO models feature front-wheel drive, which is typical for this class of car. The drive components have been modularly organised by the Mercedes engineers and can be combined as needed. These include state-of-the-art liquid-cooled lithium-ion batteries with up to 35 kWh capacity, and a compact electric motor with a maximum output of 100 kW (sustained output: 70 kW). The maximum torque of 320 Nm is available from the electric motor’s first revolution, and it surpasses the value attained by today’s V6 petrol engines at 2,500 rpm. Like its two sister models, the BlueZERO E-CELL and the BlueZERO F-CELL, the BlueZERO E-CELL PLUS can accelerate from 0 to 100 km/h in less than eleven seconds. To ensure optimum range and energy efficiency, the top speed is electronically limited to 150 km/h.

“The Concept BlueZERO offers a triple demonstration of the technical maturity of alternative drive systems from Mercedes-Benz. Electric vehicles with battery electric or fuel cell drive systems will not truly be on an equal footing with today’s combustion engine drive systems until the customers are confident that there is a sufficient infrastructure of electricity and hydrogen refuelling stations,” says Prof. Herbert Kohler, Head of E-Drive and Future Mobility and also Chief Environmental Officer at Daimler.

Concept BlueZERO: Modular architecture for flexibility and efficiency

The three BlueZERO variants were developed on the basis of the unique sandwich-floor architecture known from the A-Class and B-Class. The advantage of the enhanced design is that the key drive components are installed in the vehicle’s underbody in such a way that they take up little space, ensure a good centre of gravity, and are maximally protected. The BlueZERO models therefore differ considerably from conventionally designed electric cars, which have heavy and voluminous storage batteries installed in the boot, for example, or in the area of the backseat. All three BlueZERO variants share key technological components and have identical designs and vehicle dimensions. Even though they have compact exterior dimensions, the 4.22-meter-long BlueZERO models have a spacious and versatile interior and cargo space. The vehicles’ five full-size seats, approximately 450 kilograms of payload, and more than 500 litres of cargo capacity make them suitable family cars.

“Our modular system permits different drive configurations for each customer requirement,” says Dr. Thomas Weber, the Daimler Board of Management Member responsible for Group Research and Mercedes-Benz Cars Development. “The improved sandwich floor platform serves as the perfect basis for a diverse range of vehicles with electric drives. We are currently developing an additional platform for future compact models that have drive systems using optimized internal combustion engines. The smart linking of both architectures will allow us to expand our product range in an extremely flexible and efficient manner. Beginning in 2009, we will manufacture the first small batch of Mercedes fuel cell cars. In 2010, they will be followed by a small batch of Mercedes-Benz vehicles that run solely on electric power supplied by a battery. Thanks to these measures, we are excellently positioned for the future.”

Electric powered vehicles are fun to drive

Mercedes-Benz vehicles will continue to combine environmental awareness and driving fun in future. One way in which the Mercedes-Benz designers have emphasised this aspiration is by introducing paint finishes in three new ALU-BEAM colours. Each of the three variants makes its individual mark: Confident ALU-BEAM Copper was chosen for the BlueZERO E-CELL PLUS. The BlueZERO E-CELL is painted a fresh ALU-BEAM yellow; the BlueZERO F-CELL appears in ALU-BEAM green.

Mercedes-Benz feels it won’t be just one technology that paves the way to sustainable mobility in the future, however. Instead the company is responding with solutions that are every bit as varied as the demands. The individual technologies are being used in specific applications where they can provide the greatest advantage with respect to optimal consumption and emission values. Mercedes-Benz views the development of electric cars with battery and fuel cell drives for local zero-emission driving as a means of supplementing the extremely clean and economical BlueEFFICIENCY and hybrid vehicles already available today. However, the unrestricted and convenient operation of electric cars still faces a series of challenges, including high system costs, insufficient infrastructure and short cruising ranges. Advanced diesel and petrol engines will remain the driving force for automobiles for a long time to come – not only for individual mobility in passenger cars (especially over long distances), but, more importantly, for freight transport in trucks. Despite all the progress that Mercedes-Benz has once again so emphatically documented with the Concept BlueZERO, electric cars will not be replacing vehicles with combustion engines any time soon. The electrification of modern, high-tech engines will, however, play an increasingly important role in the drive system mix of the future.

  • Concept BlueZERO E-CELL PLUS
  • Electric powered concept car with a battery-electric range of up to 100 kilometres
  • A combustion engine that serves as an electrical generator (range extender) extends the range to up to 600 kilometres (total)
  • The concept vehicle can be recharged simply and conveniently at a common household outlet
  • With a charging capacity of 20 kW, the Concept BlueZERO E-CELL PLUS can be recharged within around half an hour for a 50 kilometre range
  • The liquid-cooled lithium-ion batteries used as an energy source have an energy content of up to 17.50 kWh
  • Front-wheel drive
  • Electric drive
  • CO2 emissions: 0 g/km
  • Range: up to 100/600 km
  • Battery: Lithium-ion
  • Rated output: 100 kW/136 hp
  • Max. torque: 320 Nm
  • Top speed: 150 km/h
  • Acceleration 0-100 km/h: < 11.0 seconds
  • Range extender
  • Cylinders: 3
  • Displacement: 1.0l turbo
  • Output: 50 kW at 3500 rpm

Mercedes-Benz BlueZERO E-CELL PLUS Second Look

The long combined range makes the BlueZERO E-CELL PLUS fully suitable for everyday use

Mercedes-Benz today has again detailed one member of their modularly constructed electric car family– the Mercedes BlueZERO E-CELL PLUS. Based on the BlueZERO E-CELL (one of the models unveiled late last year that’s driven only by a battery-powered electric drive), the BlueZERO E-CELL PLUS features the same battery powered electric motor but adds a compact 50kW three-cylinder turbocharged petrol engine. As a result, the BlueZERO E-CELL PLUS boasts an operating range of up to 600 km, whereas the BlueZERO E-CELL notes an operating range of 200 km.

In terms of operation, the BlueZERO E-CELL PLUS features a rapid charging option with a capacity of 20 kW, enough power to allow for a 50 km cruising range in about 30 minutes. To achieve full electric charge, a little over an hour is needed, which will then allow the BlueZERO E-CELL PLUS to achieve its maximum range of 100 km (using the electric drive only). Charging time with a standard charge cycle at a conventional household outlet with 3,3 kW is approximately 6 hours.

Speaking briefly about the new concept, Prof. Herbert Kohler, Head of E-Drive and Future Mobility and also Chief Environmental Officer at Daimler, notes: "The Concept BlueZERO offers a triple demonstration of the technical maturity of alternative drive systems from Mercedes-Benz. Electric vehicles with battery electric or fuel cell drive systems will not truly be on an equal footing with today’s combustion engine drive systems until the customers are confident that there is a sufficient infrastructure of electricity and hydrogen refueling stations."

Mercedes-Benz At The Detroit Auto Show: Mercedes-Benz Concept BlueZERO Vehicles

Mercedes-Benz is showing the way ahead in environmentally responsible electromobility by presenting its Concept BlueZERO

Mercedes-Benz is showing the way ahead in environmentally responsible electromobility by presenting its near-series Concept BlueZERO at the North American International Auto Show in Detroit. Based on a single vehicle architecture, this intelligent, modular concept allows three models with different drive configurations, all of which are able to meet customer requirements in terms of sustainable mobility:

  • the BlueZERO E-CELL with battery-electric drive and a range of up to 200 kilometers using electric drive alone
  • the BlueZERO F-CELL (fuel cell) with a range of well over 400 kilometers using electric drive
  • the BlueZERO E-CELL PLUS with electric drive and additional internal combustion engine as power generator (range extender). This version has an overall range of up to 600 kilometers and can cover a distance of up to 100 kilometers using electric drive alone.

The three BlueZERO variants are based on the unique sandwich-floor architecture which Mercedes-Benz introduced some ten years ago, initially for the A-Class and then for the B-Class, one of the aims being to integrate alternative drive systems. Advantages of the modified construction include the positive effect of the major drive components on the centre of gravity, their space-saving design, and the fact that they are extremely well protected within the vehicle underbody. The five-seater BlueZERO concept cars also set standards in terms of lightweight design, interior layout, and body form.

“The flexible BlueZERO concept allows electromobility for every requirement and highlights the fact that Mercedes-Benz is the world’s only car manufacturer to already have in place all the key technologies for electric cars offering full everyday practicality”, says Dr. Dieter Zetsche, Chairman of the Board of Management of Daimler AG and Head of Mercedes-Benz Cars.

The BlueZERO principle: flexible design, compact exterior, and generously sized interior

All three BlueZERO variants share the same key technical components, while the design and vehicle dimensions are identical. Measuring just 4.22 meters in length, the BlueZERO models combine compact exterior dimensions with a generously proportioned and variable interior and luggage compartment. Five fully-fledged seats, a payload of around 450 kilograms, and a luggage compartment capacity of over 500 liters make for outstanding everyday practicality. Thanks to their sandwich construction with a raised sitting position, the cars also offer an exceptionally high level of crash safety for the passengers and the technology, not to mention excellent all-round visibility.

Compared to electric cars based on conventional vehicle platforms and originally only designed for use in combination with internal combustion engines, Concept BlueZERO offers the following conclusive advantages:

Interior space is retained in full. As the energy accumulators/generators are integrated into the spacious sandwich floor, no compromises are necessary with respect to passenger space, luggage capacity, or variability.

The powertrain technology built into the sandwich floor ensures a low centre of gravity and, consequently, extremely reliable and agile handling.

Crash safety is of the extremely high standard associated with Mercedes thanks to the sandwich concept and the housing of major powertrain components between the axles.

As a result, the BlueZERO models are very different to conventionally constructed electric cars, which have the heavy and voluminous storage battery housed in the boot or in the rear-seat area, for example.

Modular design assures flexibility and efficiency

“Our modular system allows different drive configurations for every customer requirement”, says Dr Thomas Weber, the member of the Daimler AG Board of Management responsible for corporate research and development at Mercedes-Benz Cars. “The modified sandwich-floor platform provides the perfect basis for a wide model range with electric drive systems. We are also developing a new, additional platform for future compact models with power units based on optimized internal combustion engines. The intelligent networking of both architectures enables us to develop our product portfolio extremely flexibly and efficiently. From 2009, we will be producing the first Mercedes fuel-cell cars on a small scale. Small-scale production of Mercedes-Benz cars with battery-electric drive alone will then commence in 2010. This means we are extremely well equipped for the future.”

All three BlueZERO models feature front-wheel drive, which is typical for this class of car. The Mercedes engineers have put together a modular system comprising several flexibly combinable drive components. These include state-of-the-art liquid-cooled lithium-ion batteries with a storage capacity of up to 35 kWh and the compact electric motor with a maximum output of 100 kW (continuous output 70 kW), which develops a peak torque of 320 Nm. All three variants accelerate from 0 to 100 km/h in less than 11 seconds. Their top speed is electronically limited to 150 km/h in the interests of optimal range and energy efficiency.

Electric drive systems with a range of 100, 200, and well over 400 kilometers

With a charging capacity of 15 kW, the powerful lithium-ion batteries in the BlueZERO E-CELL and the BlueZERO E-CELL PLUS can store enough energy for a range of 50 kilometers within 30 minutes. In terms of purely electrical drive, one or two hours of charging time is needed for a range of 100 and 200 kilometers respectively. The charging times are doubled if the charging capacity is 7 kW, as would be the case in a normal household. Both of these BlueZERO vehicles incorporate an electronic control unit that supports intelligent charging stations and billing systems.

At the rear, the BlueZERO E-CELL PLUShas the same 1.0-litre turbocharged gasoline engine as the smart fortwo as an additional range extender. This compact three-cylinder powerplant has an output of 50 kW at a constant 3500 rpm. If required, it can recharge the 17.5-kWh lithium-ion battery by means of a similarly rated alternator. A range of up to 600 kilometers is possible on a single tank. The purely electrical, locally emission-free range is up to 100 kilometers. The BlueZERO F-CELLwith fuel-cell drive achieves a range of well over 400 kilometers with zero emissions (as per NEDC).

BlueZERO design: both elegant and functional

Leading-edge technology is uniformly and attractively packaged in all three BlueZERO variants. The unique and distinctive Mercedes design idiom displayed by the body highlights the progressive nature of Concept BlueZERO at first glance.

The powerfully elegant front end is dominated by the radiator grille with its centrally located star. The excellent aerodynamics of the BlueZERO are partly due to the closed front apron, whose design means that cooling air intakes are not required. The 20-inch wheels have also been aerodynamically optimized, while low-friction tires are fitted to reduce rolling resistance.

The striking character lines along the flanks lend the BlueZERO an extremely dynamic side line and accentuate its bionic structure inspired by nature. This characteristic feature of the Mercedes-Benz bionic car was adapted and modified for the BlueZERO models. These elements lend the body its dramatic power.

New-quality light production

The compact rear end of the Concept BlueZERO is characterized by tail lights in the shape of a curved “L”. In addition, the Mercedes designers have achieved a new-quality light production: transparent lenses produce a red light curtain which tapers smoothly towards the sides, creating a lightly diffused effect. This effect is repeated, albeit in white this time, by the front headlamps. What’s more, the front lights feature new lens technology and a plexiglass edge to produce “C” shaped daytime driving lights with the help of state-of-the-art LED technology.

Intelligent technology made visible

Translucent surfaces make the normally concealed technology visible. The light-gray tailgate is made completely from lightweight but highly robust Lexan, allowing a view of the aluminum structure that makes up the rigidifying frame, for example. At the same time, this transparent tailgate provides a view of the vehicle interior, making the advantages of the sandwich-floor platform obvious at a glance: for maximum customer benefit, the luggage compartment and passenger area remain fully usable, since there are no technical components that need to be accommodated here.

“It was very important for us to ensure that the guiding Mercedes-Benz principle of ‘Fascination and Responsibility’ was clearly reflected in the design of the Concept BlueZERO”, says Mercedes-Benz design chief Gorden Wagener. “This is yet another clear statement that environmental awareness and driving pleasure will continue to go together in our vehicles in the future. We want people to realize at first sight that the Concept BlueZERO is definitively not a lesser option.”

The Mercedes-Benz designers have emphasized this aspiration by introducing paint finishes in three new ALU-BEAM colors. Each of the three variants makes its individual mark: the BlueZERO E-CELL is painted in fresh ALU-BEAM yellow, while the BlueZERO F-CELL has ALU-BEAM green paintwork. Confidence-oozing ALU-BEAM orange was chosen for the BlueZERO E-CELL PLUS.

Extended version

Mercedes-Benz Concept BlueZERO: three-fold proof of the everyday practicality of zero-emission vehicles

Current challenges such as growing worldwide mobility requirements, declining crude oil reserves, and increasingly stringent exhaust emission regulations are making the electric car more and more a focus of public attention. Thanks above all to major advances in battery technology, electric drive is seen as a promising answer to the question of how individual mobility can be made sustainable.

Battery-electric drive systems offer a wealth of advantages in this respect: they provide a high level of torque, are compact and quiet, run extremely efficiently and with zero local emissions, and they operate without the need for fossil fuels. However, it is not currently possible to fulfill all mobility requirements with a single electric vehicle concept. Those who drive predominantly or even exclusively in urban areas do not place as much emphasis on vehicle range but very much like the idea of lower noise levels and emissions. For such customers, a battery-electric vehicle is an attractive solution.

Those who also wish to cover long distances on country roads and motorways combined with low noise levels, no local emissions, and short refueling times have a viable alternative in the shape of the fuel-cell electric vehicle. This technology clearly shows the way ahead in terms of sustainable mobility after the “crude oil age” but requires a hydrogen-fuel-supply infrastructure. The beneficial combination of maximum range, fast energy storage on board from an existing infrastructure, and noiseless and locally emission-free mobility in urban areas is offered by a battery vehicle with range extender.

Concept BlueZERO: modularity assures optimal everyday practicality

The sandwich-floor architecture and the modular design allow three different drive configurations that are able to meet an extremely wide range of different requirements. Measuring 4.22 meters in length, 1.89 meters in width and 1.59 meters in height, the extremely compact BlueZERO concept offers decisive design advantages over electric cars based on conventional vehicle platforms and designed only for use in combination with internal combustion engines.

Interior space is retained in full. As the energy accumulators/generators are integrated into the spacious sandwich floor, no compromises are necessary with respect to passenger space, luggage capacity, or variability.

The powertrain technology located in the sandwich floor and integrated directly at the front axle assures a low centre of gravity and, consequently, extremely reliable and agile handling.

Crash safety is of the extremely high standard associated with Mercedes thanks partly to the housing of the powertrain components between the axles.

Furthermore, all three BlueZERO electric cars are highly suitable for electromobility in urban areas on account of their compact dimensions, easy entry and exit, raised sitting position, and optimal all-round visibility. All of which makes Mercedes-Benz the first and, to date, only car manufacturer in the world to offer three optimal solutions that meet all customer electromobility requirements.

Intelligent sandwich platform assures the highest possible level of safety

Featuring a modified version of the sandwich-floor platform, the BlueZERO concept sets standards for the electric car sector in all areas relevant to day-to-day motoring. The best possible crash safety is assured, since almost all of the drive components are housed within the sandwich floor, that is to say in the protected area between the axles.

Typically for this class of car, all three versions of the Concept BlueZERO are front-wheel drive models with an electric motor at the front axle. The batteries are located in the center of the vehicle floor behind this, in a position which protects against intrusion in the event of a frontal or rear impact, since the energy accumulators are located outside of the body’s impact and deformation zones. Furthermore, the extremely robust construction of the sandwich floor can offer a high level of protection for both the battery and the occupants, even in the event of a side collision. This advantage is also of economic benefit, since the battery is the largest cost factor in electric drive systems. Consequently, if the battery remains undamaged in an accident, the follow-up costs are reduced considerably. By virtue of its proven nutshell effect, the sandwich floor is the safest place for housing the still relatively expensive energy accumulators.

Room for five occupants and luggage thanks to highly efficient use of space

This clever sandwich construction also has obvious advantages where packaging is concerned: locating the drive modules in an underfloor position makes it possible to retain all of the passenger and luggage space in this 4.22-meter long five-seater, with no restrictions whatsoever. In the purely battery-powered BlueZERO E-CELL, for example, up to two of the lithium-ion battery packs developed by Mercedes-Benz can be accommodated in the sandwich floor.

In addition to exemplary safety and unrestricted everyday practicality, the BlueZERO models have further strengths that are by no means the norm for electric cars, namely agility and driving enjoyment. This is in large measure due to the low centre of gravity, another benefit of the low installed position within the sandwich floor, and the front axle suspension. In combination with uncompromising attention to centered masses, this results in outstanding roadholding and handling agility.

Modular drive concept for individually configured electric vehicles

Mercedes-Benz will present two BlueZERO variants at the 2009 NAIAS show in Detroit: the BlueZERO E-CELL as a purely battery-powered vehicle and the fuel-cell version, the BlueZERO F-CELL – both of which are emission-free in local operation. Mercedes-Benz development engineers are also working on a third version with a range extender, the BlueZERO E-CELL PLUS. This is additionally equipped with a compact internal combustion engine as a generator that produces power during a journey.

All these models feature battery packs based on the latest lithium-ion technology. This new battery technology has decisive advantages over conventional battery types, among them very compact dimensions, significantly higher performance, excellent reliability, and a long operating life. The identical components used in the modular system also include the compact, permanent-magnet synchronous electric motor, which operates at a maximum of 13,280 rpm. It develops a peak output of 100 kW and a continuous output of 70 kW. Its peak torque is 320 Nm, while the continuous torque is 180 Nm. The maximum torque is available from the first revolution of the electric motor and exceeds the figure achieved by a current V6 gasoline engine at 2500 rpm.

BlueZERO E-CELL: agile, quiet and locally emission-free

The BlueZERO E-CELL is equipped with a lithium-ion battery with a capacity of 35 kilowatt hours (kWh). The liquid-cooled high-voltage cells have an operating voltage of 240 to 426 V. With this battery, the BlueZERO E-CELL has an operating range of up to 200 kilometers. Recharging the empty battery takes three to four hours. The BlueZERO E-CELL accelerates from zero to 100 km/h in less than eleven seconds and, in the interests of optimal range and energy efficiency, has an electronically limited top speed of 150 km/h.

BlueZERO F-CELL: emission-free driving on long journeys with the fuel cell

The new-generation fuel cell used in the BlueZERO F-CELL is more compact and – with a maximum output of 90 kW (continuous output 80 kW) – also more powerful than its predecessor. It can be cold-started at temperatures down to minus 25 degrees Celsius and also has the benefit of short refueling times.

On the road, the BlueZERO F-CELL assures a high standard of dynamic handling, yet this family-friendly compact car consumes just 2.9 liters of fuel (diesel equivalent) per 100 kilometers. According to the NEDC, the BlueZERO F-CELL is able to cover well over 400 kilometers on one tank of hydrogen.

In the fuel cell version of the BlueZERO, the electric motor, high-voltage battery, and hydrogen tank are likewise positioned beneath the passenger cell to save space. The system uses the most efficient energy source for the current driving situation. When parking or maneuvering at slow speed, for example, the electric motor uses only battery power. When accelerating, energy is provided by both the fuel cell and the battery. When braking, the electric motor acts as a generator and charges the battery. This efficient system therefore makes use of the energy that would be converted into heat during conventional braking and stores it in the powerful lithium-ion battery.

For longer journeys too, Mercedes-Benz sees the fuel cell as one of the key technologies for zero-emission driving. Providing a suitable network of hydrogen filling stations is in place, this technology offers ideal possibilities for sustainable mobility well into the future. The hydrogen-powered fuel cell combines zero emissions with a long operating range, since electrical power is generated on board during the journey. There are no exhaust emissions whatever, and no CO2 is emitted either. The BlueZERO F-CELL emits nothing more than steam. Moreover, a fuel cell drive system is almost twice as efficient as an internal combustion engine.

BlueZERO with range extender: flexible solution with a long range

In the third version, the BlueZERO E-CELL PLUS, the Mercedes engineers combine the electric drive system from the purely battery driven BlueZERO E‑CELL with an additional internal combustion engine that serves as a range extender. The compact 50-kW three-cylinder turbocharged gasoline engine from the smart fortwo charges the battery whilst the car is being driven.

Advantage of the range extender: as with conventionally powered cars equipped with a gasoline or diesel engine, the customer benefits from a significantly longer range (up to 600 km), especially as the BlueZERO E-CELL PLUS can also be quickly and easily refueled at any normal filling station. The customer can therefore be sure that the car is available for use anywhere and at any time. And when an urban area is reached after an overland journey, the driver can continue on their way under electric power alone.

The BlueZERO E-CELL PLUS therefore allows electric mobility at the touch of a button, a particular benefit in densely populated urban areas with environmental zones, toll charges, and other access restrictions affecting cars with internal combustion engines.

The BlueZERO E-CELL PLUS with the range extender clearly highlights the advantages of the sandwich-floor platform: here too, the key drive components are integrated in the underfloor area to save space. The internal combustion engine is installed near the rear axle, in the spare wheel well. Thanks to the range extender, the BlueZERO E-CELL PLUS has a range of up to 600 kilometers, of which 100 kilometers are in locally emission-free electric mode, with no drop in performance. The NEDC fuel consumption is 4.5 liters per 100 kilometers. In conjunction with a plug-in battery and the resulting CO2 bonus, the car emits just 32 grams of CO2 per kilometer.

In addition, the highly efficient modular concept allows further variants to be individually configured. If the system is designed appropriately, the internal combustion engine used as a range extender can also be employed temporarily as a direct drive unit – when driving on country roads, for example. This setup leaves the full battery capacity available for driving in town. Other conceivable variants might be to use the fuel cell as a range extender, or a combination of the fuel cell and plug-in batteries. Thanks to this versatility, the Mercedes-Benz modular electric drive concept is able to cover every conceivable option for electric driving.

Instead of a fuel filler cap, the car features plug-in connectors to EU and US standards for rapid recharging with electrical power. One contact is intended for conventional power cables that fit any household power socket. The second is suitable for connection to public recharging stations.

BlueZERO design: both elegant and functional

Cutting-edge technology is very attractively packaged in all the BlueZERO variants. The future-oriented yet unmistakable Mercedes-style body contours accentuate the progressive nature of the Concept BlueZERO at first glance.

The Mercedes-Benz designers have emphasized this aspiration by introducing paint finishes in three new ALU-BEAM colors. Each of the three variants makes its individual mark: the BlueZERO E-CELL is painted in fresh ALU-BEAM yellow, while the BlueZERO F-CELL has ALU-BEAM green paintwork. Confidence-oozing ALU-BEAM orange was chosen for the BlueZERO E-CELL PLUS.

Striking design idiom with bionic structures

The striking character lines along the flanks give this compact concept car a very dynamic side line and accentuate its bionic structure. This characteristic feature of the Mercedes-Benz bionic car was adapted and modified for the Concept BlueZERO. These elements lend the body design its dramatic power.

The lower line emerges from the flank in the front doors at the height of the wheel hub, then rises gently to turn steeply upwards and harmoniously continue the body line to the tail lights. This has the effect of stretching the body in visual terms, while suggesting dynamic forward movement despite the comfortable vehicle height. The precisely placed edges break the light to striking effect and lend the BlueZERO a masculine character that is a hallmark of the new Mercedes-Benz design idiom.

Translucent surfaces make the normally concealed technology visible. The light-gray tailgate is made completely from lightweight but highly robust Lexan, allowing a view of the aluminum structure that makes up the rigidifying frame, for example. At the same time, this transparent tailgate provides a view of the vehicle interior, making the advantages of the sandwich-floor platform obvious at a glance: the luggage compartment and passenger area remain fully usable, since there are no technical components that need to be accommodated here.

Key features at the distinctive rear end of the BlueZERO models include tail lights in the form of a curved “L”, whose flame-like shape add a futuristic touch. In addition, the Mercedes designers have achieved a new-quality light production: four transparent lenses produce a red light curtain which tapers smoothly towards the sides, creating a lightly diffused effect.

This effect is repeated, albeit in white this time, by the front headlamps. What’s more, the front lights feature new lens technology and a plexiglass edge to produce “C” shaped daytime driving lights with the help of state-of-the-art LED technology. The extremely energy-efficient LED technology offers the same brightness but requires ninety percent less power than conventional lights.

The lenses are held by supports which also serve as direction indicators.

Aerodynamic design with eye-catching effects

The radiator grille with its centrally located star and even more pronounced V‑shape is a striking reinterpretation of the world-famous Mercedes-Benz radiator grille. The excellent aerodynamics of the BlueZERO are partly due to the closed front apron, whose design dispenses with any cooling air intakes. The 20-inch wheels are also aerodynamically optimized. Low-friction tires are fitted to reduce rolling resistance.

Like many other design features, the wheel covers are transparent and allow a view of wheel spokes, which are visually enhanced with three-dimensional light effects. All BlueZERO variants are also equipped with a semi-transparent, lightweight panoramic roof into which solar panels have been integrated. The thin-layer cells used here allow 20 percent of the light into the interior. Given enough sunlight, they generate sufficient electric power to charge cell phones or mobile MP3-players, for example.

Progressive interior design

The interior features an all-new, progressive design idiom: the lines are curved and blend in subtly with the organic surfaces. The Concept BlueZERO is a logical continuation of the bionic design line and is similar to the Mercedes-Benz bionic car. A wealth of structures inspired by nature and modeled based on organic growth can be found in several of the paneling components: in the door stowage areas, the cockpit, the centre console, the load compartment, and the load sill guard.

The array of colored transparent surfaces lends the interior a feeling of lightness. This is enhanced by semi-transparent surfaces whose edges form striking light breaks. This interplay between transparency and edge emphasis contrasts extremely well with the soft design idiom. The suggested fluorescent conductor paths in the center console represent the advent of a future drive technology.

The sporty front seats feature seemingly inserted upholstery and dynamically shaped backrests. The overall impression is one of lightness and litheness, all

of which makes the vehicle interior feel much more open. As a five-seater, the Concept BlueZERO offers the flexibility and functionality of a modern-day compact car.

The material concept is largely based on a tone-in-tone composition enriched by touches of color. By way of example, the belt color and the seam thread in the paneling components establish a link with the car’s exterior, while the leather strip in the seats creates a visual link with the high-quality steering wheel.

Thanks to their surface quality, the materials are highly resistant. The material mix of textiles and plastics combines a high level of value with high-tech appeal.

Concept BlueZERO: a blueprint for efficient electromobility

With the BlueZERO concept studies, Mercedes-Benz provides a very specific outlook on the immediate future of electric motoring. Major components of this modular drive concept will shortly be used in standard-production cars made by Mercedes-Benz. These include the fuel cell drive system, which will enter small-scale production in 2009. In 2010, the first Mercedes-Benz electric car will also be introduced into small-scale production.

Modular design as a strategic guideline

With this intelligently conceived modular system, Mercedes-Benz will also be able to realize tailor-made drive configurations for individual requirements in the electric car sector. For the brand’s clients, this means a wide choice of purpose-made, efficient, and affordable solutions.

The product implementation presented by Mercedes-Benz on its “Road to the Future” is uncompromisingly wedded to the modular design principle: modular drive technologies that can be used individually or in combination depending on vehicle class, operating profile, and customer requirements are a key factor in this.

Modular drive concept also for hybrid vehicles

This particularly applies to hybrid models such as the S 400 BlueHYBRID, which is due to be launched in 2009 as the most economical gasoline-powered luxury saloon and CO2 champion in its class. For its hybrid models with gasoline and diesel engines, Mercedes-Benz has developed a modular system which can be expanded with respect to performance and range of applications.

In the S 400 BlueHYBRID, the hybrid module with its start-stop function, recuperation and boost effect already makes considerable savings possible.

With a suitable configuration, it is also possible to drive under electric power alone with this hybrid module, while the operating range in electric mode depends on the battery capacity.

The plug-in hybrid represents a further step, where the battery can also be charged from the mains in order to increase the electric operating range.

Intelligent drive mix for sustainable mobility

In the view of Mercedes-Benz, there will be no single technology as the ideal solution for sustainable mobility in the future. Instead the company is responding to the varied requirements with equally versatile solutions. The respective advantages of the individual technologies in terms of optimal fuel consumption and emission values are applied in specific application areas. Mercedes-Benz is basing its strategic planning for the future of individual mobility on the following mix of drive systems:

For long-distance operations, sophisticated internal combustion engines with or without a hybrid module will be used, as well as fuel cell powered vehicles.

For rural operations, plug-in hybrids will increasingly be added to the mix.

For urban operations, locally emission-free vehicle concepts with battery and fuel-cell drive systems are considered to be the most suitable.

The electric drive configuration presented in the Concept BlueZERO does full justice to this requirement profile. Mercedes-Benz has conducted intensive research in the field of fuel cell technology since as early as 1991 and, therefore, has enormous experience with electro- mobility. The brand has the world’s largest fleet of fuel cell powered vehicles undergoing client trials, for example.

And in the field of battery-powered vehicles, the company has also gained unrivalled experience from fleet trials involving 100 smart electric drive cars in London. The Concept BlueZERO impressively reflects this in-depth know-how.

Mercedes-Benz BlueZERO Concepts Confirmed for the North American International Auto Show in Detroit

Mercedes-Benz is showing the way in environmentally responsible electromobility by presenting its near-series Concept BlueZERO

Last week we told you that Mercedes was preparing a trio of BlueZERO concept models for the North American International Auto Show in Detroit, each of which featured a distinct alternative power source. In the BlueZERO E-Cell, power came by way of a lithium-ion electric drive; in the BlueZERO E-Cell Plus, a lithium-ion electric drive plus an internal combustion was present; and in the BlueZERO F-Cell, a fuel cell system was the primary means of thrust (their operating ranges varied from 75 miles to just under 450 miles).

This week, Mercedes has confirmed that the three BlueZERO concept vehicles are indeed set to premier at Detroit’s North American International Auto Show, with the three models the latest demonstration of the company’s focus on developing “modular powertrain technologies.” Each are based on the same lightweight sandwich-floor architecture (first introduced on the A-Class and then B-Class some ten years ago), with their goal being to demonstrate how in a single platform, Mercedes already has the ability to offer a varying range of alternative drive technologies based on individual customer requirements.

According to Daimler CEO Dr. Dieter Zetsche: “The flexible BlueZERO concept allows electromobility for every requirement and highlights the fact that Mercedes-Benz is the world’s only car manufacturer to already have in place all the key technologies for electric cars offering full everyday practicality.”

Dr Thomas Weber, the member of the Daimler AG Board of Management responsible for corporate research and development at Mercedes-Benz Cars, adds: “Our modular system allows different drive configurations for every customer requirement. The modified sandwich-floor platform provides the perfect basis for a wide model range with electric drive systems. We are also developing a new, additional platform for future compact models with power units based on optimised internal combustion engines. The intelligent networking of both architectures enables us to develop our product portfolio extremely flexibly and efficiently. From 2009, we will be producing the first Mercedes fuel-cell cars on a small scale. Small-scale production of Mercedes-Benz cars with battery-electric drive alone will then commence in 2010. This means we are extremely well equipped for the future.”

Or, to put it simply, Mercedes would like to formally state that they have succeeded in creating a trio of alternatively-powered A-/B-Class models, but in all probability, you won’t be getting your hands on one anytime soon.

For more information regarding the Mercedes-Benz BlueZERO concept vehicles, keep reading for the official press release and photos (click to enlarge).

Mercedes-Benz BlueZero Concept Vehicles To Debut at the North American International Motor Show in Detroit

The Mercedes-Benz BlueZero E-Cell, the BlueZero E-Plus Cell and the BlueZero F-Cell, the three models set to debut in January

According to the all-seeing eyes and all-knowing minds at Auto Motor und Sport, Mercedes is on the verge of introducing three new alternatively powered “BlueZero” concept vehicles – a feat they’ll perform at next month’s North American International Auto Show in Detroit (January 11th-25th; get your tickets while they’re hot). Titled the Mercedes-Benz BlueZero E-Cell, the BlueZero E-Plus Cell and the BlueZero F-Cell, the three models make use of a lithium-ion electric drive, a lithium-ion electric drive plus an internal combustion engine and a fuel cell system, respectively.

In the Mercedes BlueZero E-Cell (powered only by a lithium-ion electric drive system, remember), range is expected to be about 75 miles. In the fuel cell powered Mercedes BlueZero F-Cell, range is expected to double, thanks to the electric motor’s ability to act as a generator, thus charging the battery during various stages of operation (much like the S400 BlueHYBRID). And in the BlueZero E-Plus Cell, a rear-mounted three-cylinder turbo petrol engine borrowed from the smart fortwo is rumored to give the part gas, part electric model an operating range of some 372 miles, with another 75 miles on tap operating in purely electric mode.

How this information was derived isn’t clear, but judging by the commonality of Mercedes’ various “leaks,” I’d expect when the North American International Auto Show opens its doors next month the majority of Auto Motor und Sport’s assessments will be spot on.

Time will tell, but in the meantime, keep scrolling to see a number of photos depicting one of the Mercedes BlueZero concept vehicles (click to enlarge), then head over to Auto Motor und Sport where you can check out their full article translated from German for your reading entertainment.