The new smart fortwo electric drive has taken on a pioneering role among battery-powered electric vehicles. With a range of up to 135 kilometres the two-seater car is the ideal solution [...]]]> As the first European car manufacturers smart and Mercedes-Benz are entering the age of electric mobility with vehicles that are fully suitable for everyday use.

The new smart fortwo electric drive has taken on a pioneering role among battery-powered electric vehicles. With a range of up to 135 kilometres the two-seater car is the ideal solution for zero-emission motoring in towns and cities. The Mercedes-Benz B-Class F-CELL is the perfect complement. As an electric vehicle with a fuel cell it combines driving without any local emissions with the advantage of a large range of up to 400 kilometres which makes it suitable for longer trips as well. Both vehicles are now being handed over to customers.

Dr. Dieter Zetsche, Daimler CEO and Head of Mercedes-Benz cars says

“As a global supplier of premium cars we want to meet the mobility requirements of our customers all over the world. This is why we are broadly positioned and have developed a modular drive mix to suit different requirements. The smart fortwo electric drive and the Mercedes-Benz B-Class F-CELL are already demonstrating the contribution that electric cars can make to sustainable mobility.”

Experts are unanimous in their belief that the “coexistence” of different drive technologies will shape the face of road traffic for years to come. This is why Daimler’s approach is to develop vehicle concepts with modular drive technologies which ensure that the focus is always on both customer benefits and environmental compatibility. In addition to the optimisation of vehicles with state-of-the-art combustion engines and further efficiency increases with hybridisation tailored to customer needs, the third central focus of development is on fuel cell and battery-powered vehicles that do not produce any local emissions.

Dr. Thomas Weber, Daimler AG board member responsible for Group Research and Development at Mercedes-Benz Cars says

 ”Each of these technologies demonstrates its advantages with regard to optimum consumption and emission figures in specific fields of application. We are the only manufacturer worldwide to offer our customers appropriate solutions for all fields of application – from personal mobility to local public transport and goods transport on the roads.”

Electric cars are now being delivered to customers With the electric cars from smart and Mercedes-Benz that are fully suitable for everyday use, zero-emission driving is already a reality. The new smart fortwo electric drive is a pioneer among battery electric vehicles which are primarily suited to use in urban areas. The second generation is already being built and now boasts a highly efficient lithium-ion battery which enables a range of 135 kilometres and impressive performance. Following the start of series production in Hambach, France in mid November 2009, the first small series of 1000 vehicles will be handed over to customers in Berlin on 17 December. The two-seater car will initially be delivered to selected customers in six European countries plus the USA and Canada within the framework of a leasing or rental model. Volume production will start in 2012 and the smart fortwo electric drive will then be available to anyone interested. Thanks to its range of around 400 kilometres, the Mercedes-Benz B-Class F-CELL is suitable for both zero-emission driving in city traffic and also for travelling longer distances. Small series production of this electric car has also started. Next year the first of approximately 200 vehicles will be delivered to customers in Europe and the USA. Both electric cars are fully suitable for everyday use. All the main components are housed in a space-saving position between the axles where they are optimally protected, and this means that the interior space is not compromised in the electric versions of the standard cars. Furthermore, the smart – the ultimate city car – has an extremely comfortable range for city driving and it can be charged at any household socket. The B-Class F-CELL offers a large range and is suitable for travelling longer distances as well. As its hydrogen tanks can be fully refuelled in around three minutes it is also the electric car with the shortest charging time.

Infrastructure is essentialAn appropriate refuelling and electricity charging infrastructure is essential for wide customer acceptance and quick widespread use of electric vehicles. This is why Daimler is committed to setting up a comprehensive network of electricity charging stations and hydrogen filling stations. In September 2009 together with the Federal Ministry of Transport and partners from the energy sector the company presented a plan for establishing a hydrogen infrastructure in Germany. At the same time Daimler reached an agreement with other leading car manufacturers to bring several hundred thousand fuel cell cars to the roads from 2015. Parallel to this, together with various partners in Europe the Stuttgart car manufacturer is advancing the expansion of a public electricity charging infrastructure. This is because although electric vehicles like the smart fortwo electric drive can easily be charged at a domestic garage socket, around 40 percent of European vehicle owners do not have a parking space of their own. Publicly accessible charging stations are therefore needed. To enable this to be realised Europe-wide as far as possible with standardised framework conditions, Daimler is developing corresponding standards together with other car manufacturers and utility companies. Electric mobility – an affordable alternative? New technologies generally entail high investments and costs. This means that at the current stage of development electric cars are still more expensive than comparable models with combustion engines. Daimler is applying all available levers to reduce the costs to a level that is economically acceptable and attractive to customers. For example, by industrialising lithium-ion technology with the company Deutsche Accumotive GmbH and the economies of scale resulting from this. Furthermore, in product development Daimler is systematically using a modular E-drive system. This enables synergies to be ideally used between the different vehicle segments. There are also numerous other factors that make electric mobility attractive for customers. Tax relief and other government subsidies are an important aspect. For example, the state of Monaco offers tax relief of up to €9,000 to electric car owners. Other countries have also set up funding programmes for sustainable mobility. France offers a “super environment incentive” of €5000 for vehicles that emit less than 60 grams of CO2 per kilometre. China and Japan have announced subsidies of €6,500 and €11,000 respectively.

Customers benefit from lower running costs

In addition, owners of electric cars can benefit from lower running costs. For example, in Germany the electricity costs for a distance of 100 kilometres currently stand at between two and three euros. And many experts believe that in the long-term the costs for hydrogen will level out at a price that makes it an inexpensive alternative to fossil fuels.

However, the question of the future taxation of new fuels has not yet been clarified. Dr. Thomas Weber says

“It would make sense to find a solution that supports the introduction of new drives during the transitional period – for example with temporary tax exemption for electricity and hydrogen, just as various countries offer tax relief today for natural gas used to power vehicles.”

For example, electric cars like the smart fortwo electric drive are exempted from the city congestion charge in London, enabling their owners to save considerable sums of money.

Dr. Joachim Schmidt, Head of Sales and Marketing at Mercedes-Benz Cars says

“All things considered we see good prospects for electric mobility with fuel cells and batteries. Whilst other companies are still presenting electric show cars, we at smart and Mercedes-Benz are already bringing two vehicles that are fully suitable for everyday use to the roads.”

Peter Lake, executive vice president, Sales and Business [...]]]> TRW Automotive Holdings Corp. recently anounced that it will supply Daimler AG with a newly enhanced Motor Pump Unit as part of the Electrically Powered Hydraulic Steering system (EPHS) on selected new Mercedes-Benz models. The MPU delivers enhanced performance and environmental attributes when compared with conventional hydraulic solutions.

Peter Lake, executive vice president, Sales and Business Development for TRW Automotive said:

 ”TRW supplies its EPHS technology to a number of Mercedes-Benz models including these recent launches. We’re satisfied to be in a position to support Mercedes with its focus on delivering improved fuel efficiency.”

With TRW’s motor pump unit, hydraulic assist is determined by the pump speed and controlled by a patented, brushless motor which provides assist only when it is needed. The system used on the various Mercedes models uses TRW’s newest high power motor pump assembly providing a hydraulic output power of up to 1000 watts. Compared with traditional hydraulic power steering, the system also offers fuel savings of up to 0.29L/100km and a reduction of carbon dioxide emissions of approximately 6g/km.

TRW’s motor pump unit provides flexible tuning capability allowing the system to adapt to different driving conditions, providing a comfortable setting for parking and city driving, while delivering a safe and robust feel at higher speeds. There is also the option for EPHS to vary assist levels depending on the vehicle loading information provided by other vehicle subsystems.

“TRW’s EPHS technology is a proven, off-the-shelf solution which can be used for most HEV steering load requirements. With flexible packaging and mounting options, the technology offers much of the functionality, fuel efficiency and emissions reductions of a full electric system. EPHS is ideal for HEVs as a technology that can be used across both the conventional and hybrid powertrain platforms, reducing application engineering costs,” continued Lake.

Dieter Fehlings, engineering director for TRW steering systems, concludes: “TRW is well positioned to support vehicle manufacturers in their quest for improved fuel efficiency. We have a proven technology that can be adapted easily for conventional and hybrid applications. This makes it easy for our customers to fit a system that further improves fuel economy, beyond the benefit of the powertrain itself.

“The technology can also be applied to existing Hydraulic Power Steering systems in order to meet short term CO2 requirements. In this case, the mechanical pump is substituted by TRW’s EPHS motor pump unit technology.

“For TRW, it is about maintaining the quality of the steering feel, offering a range of functions and delivering environmental benefits,” concluded Fehlings.

About TRW

With 2008 sales of $15.0 billion, TRW Automotive ranks among the world’s leading automotive suppliers. Headquartered in Livonia, Michigan, USA, the Company, through its subsidiaries, operates in 26 countries and employs approximately 60,000 people worldwide. TRW Automotive products include integrated vehicle control and driver assist systems, braking systems, steering systems, suspension systems, occupant safety systems (seat belts and airbags), electronics, engine components, fastening systems and aftermarket replacement parts and services. All references to “TRW Automotive”, “TRW” or the “Company” in this press release refer to TRW Automotive Holdings Corp. and its subsidiaries, unless otherwise indicated. TRW Automotive news is available on the internet at www.trw.com.

At this months 63rd IAA Auto Show in Frankfurt Germany, Mercedes will reportedly unveil the Vision S 500 Plug-in HYBRID. The technology vehicle will display the future of Mercedes-Benz’ modular set of hybrid systems. The Vision S 500 Plug-in HYBRID can drive for up to 30 kilometres solely on electricity and therefore without producing any [...]]]>

Mercedes

At this months 63rd IAA Auto Show in Frankfurt Germany, Mercedes will reportedly unveil the Vision S 500 Plug-in HYBRID. The technology vehicle will display the future of Mercedes-Benz’ modular set of hybrid systems. The Vision S 500 Plug-in HYBRID can drive for up to 30 kilometres solely on electricity and therefore without producing any local emissions. The efficient drive system combined with the CO2 bonus for the battery-electric driving mode enables the vehicle to achieve a certified consumption of only 3.2 litres of petrol per 100 kilometers.

With CO2 emissions of only 74 grams per kilometre in the NEDC (New European Driving Cycle), the experimental vehicle developed in Sindelfingen demonstrates the long-term viability of future S Class generations. The outstanding values are made possible by the combination of a plug-in hybrid with the efficiency-boosting BlueEFFICIENCY measures. At the same time, the Vision S 500 Plug-in HYBRID has all of the strengths that are typical of the S Class: top comfort, outstanding safety and masterful performance.

 The drive system in the concept car consists of three main components: a powerful V6 petrol engine with a next-generation direct injection system, a 44 kW/60 hp hybrid module and a lithium-ion battery with more than 10 kWh of storage capacity that can be recharged at charging stations.

The Vision S 500 Plug-in HYBRID accelerates from 0 to 100 km/h in 5.5 seconds.

“The Vision 500 Plug-in HYBRID is a new milestone on our path toward zero-emission mobility,” says Dr. Dieter Zetsche, Chairman of Daimler AG and Head of Mercedes-Benz Cars. “It is a luxurious and safe S Class that offers superior driving performance while at the same time consuming less fuel than current compacts. All of this shows that our top models will also be able to combine automotive fascination with responsibility for the environment.”

“Although it will take some time before this model can go into series production, our engineers will be working full steam to carry out the necessary integration measures and ensure that all components can meet the tough everyday demands required of a luxury long-distance saloon,” says Dr. Thomas Weber, member of the Board of Management of Daimler AG with responsibility for Group Research and Mercedes-Benz Cars Development. “We’ve already got all the key technology we need for such a dream car, which is why I see it being included in the next generation of the S Class. The important thing now is that our development work be accompanied by the establishment of a full-coverage infrastructure that will allow the potential of this innovative drive system to be fully exploited.”

The electrical drive components of the Vision S 500 Plug-in HYBRID demonstrate the versatility of Mercedes-Benz’ intelligently organised set of hybrid systems, which has a widely scalable range of performance. The hybrid module’s design does not differ much from the compact, disc-shaped 15-kW electric motor of the S 400 HYBRID, even though it is three times as powerful. As a result, the hybrid module can be elegantly incorporated into the housing of the 7G-TRONIC seven-speed automatic transmission, allowing this model variant as well as the S 400 HYBRID to retain the S Class’ spacious interior. Future model generations will orient themselves on this system architecture.

Vision S 500 Plug-in HYBRID: Compact full hybrid system architecture

Whereas the extremely compact lithium-ion battery in the S 400 HYBRID (0.9 kWh) can be housed in the vehicle’s engine compartment, the significantly higher-performing lithium-ion unit in the Vision S 500 Plug-in HYBRID (over 10 kWh) requires more installation space. The battery is located behind the rear seats in the boot. The lithium-ion battery’s location above the rear axle provides crucial benefits, since it ensures that the vehicle has a balanced weight distribution and that the petrol tank remains adequate for long-distance cruising. In addition, the protected position of the tank ensures it is as safe as possible during crashes.

Additional clutch decouples the hybrid module and combustion engine

In accordance with the modular concept, the powertrain design for the Vision S 500 Plug-in HYBRID is basically the same as that for the S 400 HYBRID. One system-specific attribute is the presence of an additional clutch integrated between the combustion engine and the electric motor. This device decouples the two components in the pure electric drive mode, thereby ensuring the highest level of efficiency in the latter. Moreover, because it is fully integrated into the vehicle’s converter housing, the clutch does not take up any additional space.

Electrical outlet as a filling station: Powerful plug-in battery

Another key difference between the S 500 Plug-in HYBRID and conventional hy-brids involves the plug-in battery, which can be charged at charging stations, thereby enabling the S 500 Plug-in HYBRID to travel up to 30 kilometres on electric power. The rapid charge cycle takes less than 60 minutes with a charging capactiy of 20 kW. A standard charge cycle at a conventional household socket with 3,3 kW takes about four-and-a-half hours to recharge a completely discharged battery.

The model is also equipped with a compact onboard charger: Housed behind the side boot wall, this unit controls the recharging process and is protected against short circuits, voltage reversal, and voltage surges. The charging system also protects the battery by monitoring voltage, the charging level and charging time. The total weight of the electrical components in the current experimental vehicle is 215 kilograms, whereby the lithium-ion battery weighs approximately 130 kg. That’s much less than a conventional NiMH battery with the same capacity, as the weight of such batteries ranges from 180 – 200 kg.

The vehicle’s hybrid module also provides additional energy when the car is in motion through regenerative braking — the recovery of energy when braking. Here, the clutch enhances efficiency as well, as it enables complete energy regenera-tion without engine drag losses.

Range of up to 30 kilometres with all-electric driving

The high-performance battery and the 44 kW/60 hp hybrid module enable the vehicle to drive up to 30 kilometres purely on electricity. That is completely sufficient for many trips within cities, where the Vision S 500 Plug-in HYBRID is quick and very comfortable without producing any local emissions. The petrol engine automatically adds its power to that of the electric motor when travelling at high speeds or driving up steep inclines. Before closing the clutch in such cases, the vehicle electronics synchronises the engine speed with the hybrid module’s rotational speed so that the engine is activated extremely smoothly without the driver noticing.

What’s more, the hybrid module’s sophisticated interplay with the combustion engine enables numerous additional functions that positively impact fuel consumption, emissions and vehicle agility. Like the system employed in the S 400 HYBRID, the hybrid module in the Vision S 500 Plug-in HYBRID also comes with the ECO start/stop function. This feature also enhances safety and driving pleasure because of its boost effect, which has the electric motor providing powerful support to the combustion engine during the high-consumption acceleration phase. This system has already proved its practical viability in a slightly different configuration in the Mercedes-Benz Sprinter.

Extensive electronic safety and control components

The lithium-ion battery not only serves as an energy storage device for the electric motor in the S 500 Plug-in HYBRID; it is also linked via a DC-DC converter to the 12-volt on-board network, which provides power to standard consumers such as the headlamps and various comfort devices. To ensure a consistently high level of electrical efficiency, the voltage transformers are water-cooled via an additional low-temperature circuit.

Special power electronics are required for operating the three-phase AC electric motor in the high-voltage direct current grid, and the inverter for this task is housed in the engine compartment. Because the power electronics system itself is heated by the electric current thus created, it too is integrated into the low-temperature cooling circuit. Mercedes-Benz employs standardised components for the power electronics system as well, enabling them to be efficiently combined with different electric motors and battery types across all model series.

On the road to plug-in hybrids: Diesel-hybrid concepts

An important milestone on the road to plug-in hybrids is the recently unveiled Vision E 300 BlueTEC HYBRID diesel hybrid. Like the S 400 HYBRID and the Vision S 500 Plug-in HYBRID, it is based on the Mercedes-Benz modular hybrid concept. This near-series vehicle study combines a new 2.2-litre, four-cylinder diesel engine with the 15 kW/20 hp hybrid module that is also used in the S 400 HYBRID, but which here also enables pure electric driving. This drive system configuration enables the Vision E 300 BlueTEC HYBRID to travel 100 km on only 4.5 litres of fuel (preliminary value). This corresponds to CO2 emissions of 119 grams per kilometre with an output of 165 kW/224 hp and superior torque of 580 – 600 newtonmetres (combined in both cases), more or less the same performance as today’s six-cylinder diesel engines. Exhaust gas treatment is handled by the combination of an oxidizing catalytic converter, a diesel particulate filter and BlueTEC mit AdBlue® injection. The Vision E 300 BlueTEC HYBRID thus also has the potential to meet the world’s most stringent emission standards.

Vision S 500 Plug-in HYBRID – Technical data

Combustion engine (petrol)

No. of cylinders/arrangement: V6, 4 valves per cylinder

Displacement: 3.5 l

Hybrid module

Type: Permanently excited synchronous machine

Rated output: approx. 44 kW/60 PS

Rated torque: 250 Nm

Performance and fuel consumption

Acceleration 0 – 100 km/h: 5.5 s*

Top speed: 250 km/h

Fuel consumption: 3.2 l/100 km (combined)*

CO2 emissions: 74 g/km (combined

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 [...]]]>

Daimler

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.”

The environmentally friendly electric car has a performance similar to 2,0-litre petrol car and is fully suited for everyday driving. The zero-emission drive system consumes the equivalent of 3.3 litres of diesel per 100 kilometres in the NEDC (New European [...]]]> Mercedes-Benz is launching its first series-produced fuel cell car on the road: the B Class F-CELL.

The environmentally friendly electric car has a performance similar to 2,0-litre petrol car and is fully suited for everyday driving. The zero-emission drive system consumes the equivalent of 3.3 litres of diesel per 100 kilometres in the NEDC (New European Driving Cycle). Production of the B Class F-CELL will commence in late 2009 with a small lot.

The first of around 200 vehicles will be delivered to customers in Europe and the USA at the beginning of next year.

The new fuel cell vehicle offers everything that people expect from a Mercedes-Benz: High comfort and safety as well as no reduction in interior space and boot capacity. Customers will not have to sacrifice any driving pleasure either, because the electric motor has a peak performance of 100 kW/136 hp and a maximum torque of 290 Nm, which is available from the first rotation. It ensures that the B Class F-CELL, whose impressive dynamic handling properties are in some cases far better than those of a two-litre petrol car, gets off to an excellent start. Despite these qualities, the zero-emission fuel cell drive consumes the equivalent of only 3.3 litres of diesel fuel per 100 kilometres (NEDC). Thanks to its great range of about 400 kilometres and short refuelling times of around three minutes, the B Class F-CELL ensures local zero-emission mobility even for long stretches.

“2009 is the year in which we are establishing further milestones where sustainable mobility is concerned. The B-Class F-CELL is taking on a pioneering role as the world’s first fuel cell powered automobile to be produced under series production conditions”, says Dr. Thomas Weber, Member of the Board of Management of Daimler AG, responsible for Group Research and Development for Mercedes-Benz Cars.

The vehicle’s technological heart is the new generation of the compact, high-performance fuel cell system, in which gaseous hydrogen reacts with atmospheric oxygen at 700 bar to generate a current for the electric motor. The fuel cell system of the B Class F-CELL has a very good cold-start capability even at temperatures as low as minus 25 degrees Celsius. The drive system was completely newly developed versus the F-CELL A-Class presented in 2004, with Mercedes-Benz engineers achieving considerable improvements in output, torque, operating range, reliability, starting characteristics and comfort. The B-Class F-CELL now offers driving pleasure and day-to-day suitability at Mercedes level – without local emissions.

As in hybrids with combustion engines, the fuel-cell car uses a lithium-ion battery with an output of 35 kW and a capacity of 1.4 kWh to boost power and recover braking energy. Lithium-ion technology offers several advantages over conventional batteries, including compact dimensions, high performance, great recharge efficiency and a long service life.

The B Class F-CELL employs the unique sandwich floor architecture that is well-known from the A- and B-Class. The advantage of this design is that the drive components are located in the sandwich floor, where they are protected and don’t take up much space so that the vehicle’s interior remains fully usable and a boot capacity of 416 litres is available.

The B-Class F-CELL does not need to fear comparison where equipment is concerned either. Eye-catching features include a bonamite silver paint finish and exclusive light-alloy wheels in a 10-spoke design. In the interior, leather upholstery, seat heating, automatic climate control and the COMAND-system, as well as other features, continue to ensure a high level of comfort.

Same level of safety as in other Mercedes cars

No matter what the conditions, the operational reliability of the B Class F-CELL is of the same high level as in Mercedes vehicles with conventional combustion engines. The B Class F-CELL’s integrated safety concept takes the specific characteristics of the innovative drive system into account. The concept incorporates the expertise from the many years of experience Mercedes-Benz has had with fuel cell drives and high-voltage applications. Mercedes engineers have tested and optimised the drive-specific components’ safety in more than 30 additional crash tests.

Network of filling stations required

With more than 100 test vehicles and a combined total of over 4.5 million kilometres of trial testing, Daimler and Mercedes-Benz have the most extensive experience with fuel cell vehicles of any manufacturer worldwide. The B-Class F-CELL is further testimony of this technology’s high level of development for automotive use. However, a comprehensive network of hydrogen filling stations still has to be set up before locally zero-emission driving can become a widespread reality. To make this possible, Daimler is cooperating with government authorities, energy utilities and oil companies in joint projects in places such as Hamburg, Stuttgart and California.

Mercedes-Benz views the development of electric cars with battery and fuel cell drives for local zero-emission driving as a means of supplementing vehicles with high-tech internal combustion engines. Advanced diesel and petrol engines will remain important for automotive applications 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. Electric vehicles, on the other hand, will increasingly be used in urban transport.