Mercedes F125 Concept, 2011
As a marking 125 years of the automobile, Mercedes-Benz is presenting a visionary outlook on future technical developments in the luxury segment. The Mercedes-Benz F125! research vehicle anticipates future trends and prepares the way for implementation of an innovative premium concept for large, luxurious automobiles.
The Mercedes-Benz F125 rigorously follows its vision of emission-free driving with hydrogen power, underlining the potential of H2 as an energy source for the future. While previous Mercedes-Benz research vehicles have "looked ahead" by roughly one vehicle generation - seven to eight years - the F125! as the latest technological visionary goes a whole step further, by more than two generations to the year 2025 and beyond.
The Mercedes-Benz F125! demonstrates how completely emission-free, individual mobility might be realised in the luxury segment in the future. The researchers and developers at Mercedes-Benz have incorporated already well-proven concepts and technologies which are not yet available today, but for which basic research has shown great future promise, and therefore a realistic chance of implementation in future series-production cars.
The innovations:
- A logical further development of the fuel cell drive system in combination with plug-in technology
- Revolutionary tank technology: the structure integrated hydrogen composite storage unit.
- Lighter and more powerful batteries, in this case based on lithium-sulphur technology, which Mercedes-Benz is examining in parallel with further development of the current lithium-ion battery and research into lithium-air technology.
The Mercedes-Benz F125! was created as an innovative four-seater luxury saloon with a powerful, emission-free electric drive system based on the fuel cell technology developed to series production maturity by Mercedes-Benz. This study combines pioneering and highly efficient storage, drive and body shell technologies with unique control and display concepts. The research vehicle also presents itself with an expressive design which transfers the classic Mercedes design idiom into the future.Highlights of the F125!:
- Completely emission-free mobility with a range of up to 1000 kilometres, full day-to-day suitability, superior performance and first-class comfort.
- A bodyshell of innovative, lightweight hybrid construction with a high proportion of fibre-reinforced plastics and an intelligent mix of carbon-fibre, aluminium and high-strength steels, which allows a significant weight reduction while offering a further considerable improvement in safety. A high-strength construction with crash-responsive protective systems within the doors allows the omission of B-pillars, as well as the use of wide gull-wing doors which allow convenient access to the four seats. In this way the Mercedes-Benz safety philosophy and in particular the decisive principle of the rigid passenger cell developed by Béla Barényi in 1952 are being concertedly taken forward for the future of individual mobility.
- A high-voltage lithium-sulphur battery with a specific energy density of 350 Wh per kg at cell level, which allows considerably higher recuperation rates in combination with the e4MATIC all-wheel drive.
- A control and display concept based on touch, speech and hand-gestures makes the Mercedes-Benz F125! a true "companion" with whom the driver is able to interact flexibly and effortlessly. The gull-wing doors of light-weight CRP construction can also be opened and closed by hand-gestures.
- Highly attractive displays using 3D and projector-beam technology to open up new visual possibilities.
- Next-generation, substantially networked telematics allow internet-based voice control, integration into social media and extensive remote control of vehicle settings and entertainment functions.
- Innovative assistance systems for lasting driver stress relief, e.g. Advanced Driving Assist for semi-autonomous driving.
- Trailblazing exterior and interior design based on a completely new saloon architecture.
Revolutionary: structural integrated hydrogen composite storage unit
To store the hydrogen as the fuel of the future, Mercedes engineers adapted a technology which is still the object of basic research. This opens up completely new perspectives with respect to the vehicle architecture and operating range. "The structural integrated hydrogen composite unit of the F125! represents a real technological revolution, as it allows the hydrogen tank to be fully integrated into the bodyshell structure for the first time. In the future, vehicles with emission-free fuel cell drive systems could achieve the operating ranges of current diesel models with no loss of interior space," says Prof. Dr. Thomas Weber. Based on the current level of know-how, Mercedes specialists consider it possible that they may develop this technology to series production level from 2025.
The tank integrated into the floor assembly has a capacity of around 7.5 kg of hydrogen. Compared to the high-pressure tanks in use today, the H2 tank potentially requires less installation space. This is because to withstand a pressure of up to 700 bar, current tanks need to be cylindrical in shape, and owing to this round cross-section there are inevitably "cavities" between tanks installed next to or above each other. In contrast, tanks that can be filled at a pressure of 30 bar or less can be better integrated into the bodyshell. At the same time they are able to act as "structural" components.
The Lithium-sulphur battery: compact and powerful
A highly advanced, very powerful lithium-sulphur battery is envisaged for the Mercedes-Benz F125!. It has a storage capacity of 10 kWh and is installed behind the rear seats. Combining the fuel cell drive system with the innovative lithium-sulphur battery makes a total operating range of up to 1000 km possible, of which up to 50 km can be under battery-electric power alone. It can be inductively charged at "intelligent" charging stations, and the convenient charging process can be monitored by smartphone. When designing the F125!, the developers worked on the assumption that by the time of its introduction into series production, this battery type will be capable of energy densities up to 350 Wh per kg. This would represent roughly a doubling of current performance. The real potentials of this technology are however the subject of basic research, and are still difficult to assess at present.
Further development of the fuel cell as an energy source
At the heart of the drive system lies a particularly powerful further development of the Mercedes-Benz fuel cell stack which has demonstrated its efficiency and day-to-day suitability e.g. in the successful B-Class F-CELL World Drive in 2011.
The stack in the Mercedes-Benz F125!, which is further improved with respect to performance, consumption and practical suitability, provides the power for four powerful electric motors installed near the wheels, which ensure sporty, superior performance figures. All in all the modular e4MATIC system, which also uses improved drive components from the SLS AMG E-CELL, generates a continuous output of 170 kW (231 hp) and a peak output of 230 kW (313 hp).
This accelerates the F125! to 100 km/h in 4.9 seconds, with a top speed of 220 km/h. Nonetheless, NEDC fuel consumption is only 0.79 kilograms of hydrogen per 100 kilometres (= 2.7 litres diesel equivalent).
The Handling, operation is substantially by natural speech supplemented with touch and intuitive hand-gestures. In the interests of maximum driver-fitness and operating safety, the Mercedes-Benz F125! becomes the perfect, always alert companion for its driver and passengers. The possibilities go well beyond those of current systems. The driver can e.g. request news items that are tailored to his personal needs, and make specific, contextual enquiries, without removing his hands from the wheel. The COMAND of tomorrow also becomes proactive.
The driver will be able to start with the traffic report or retrieve personal messages before the selected music programme begins. The weather report will then automatically come on before the journey ends, for example. Thanks to the mood-based configuration function "Moods", such individual adjustments will be completed in a matter of seconds in future. The F125! also opens up completely new dimensions when it comes to external commu-nication and the use of social networks. With the help of the Social Community Assistant, the driver alone can decide who is allowed to "disturb" him, or who receives information.
A high-resolution wide-image display allows the entire traffic situation behind the vehicle to be conveniently monitored, and makes exterior mirrors unnecessary. The image is adapted to human perceptive powers at all times, and once again provides a much clearer overview with more rapid and intuitive registration of the relevant traffic situation.
The vehicle and its multimedia system, as well as all applications and contents, can be completely remote-controlled using the Remote Convenience functions. This e.g. means that via the vehicle's specific homepage, authorised individuals have access at all times to information such as the fuel level, next scheduled service or fuel consumption. Just as easily, a home PC or of course a smartphone can be used for remote configuration of the onboard navigation or entertainment system, and to select individual interior temperature settings for each seat.
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Preparing for an Auto Accident Case
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There are a number of documents that you will need prior to filing your claim, and there are also certain things that you must ensure you do before the case against the other side is commenced.
Know What You Are Insured For
Prior to filing your claim it is vital that you have checked your insurance policy to ensure that you know the extent of your coverage. This will inform you as to whether or not the insurers will pay for a replacement vehicle, if necessary, whether they will pay your medical expenses (dependent on state laws), and the extent of the information you will need to disclose to them in relation to your employment and medical histories.
Proof Of The Accident
Immediately after the accident collect the personal and insurance details of the other person. In the majority of car accidents, the police only arrive on the scene in the aftermath of the collision. However, the police report is still of considerable importance as it provides a contemporaneous record of the weather and road conditions, the position of the vehicles, the visible damage to vehicles as well as any witness accounts. It is therefore vital that you secure a copy of the police report prior to filing your claim.
In addition, you should write a full description of the accident as you remember it as soon as possible afterwords. As memories fade in time, this is the best record you will have of the accident in the event that you need to recall it in detail later on, for example if your case goes to trial. It also helps to draw a diagram of the accident, take pictures of the damage to your vehicle, as well as to photograph the scene.
Medical Evidence
Ensure that you sign the medical release form that your insurance company sends you. However, if you consider that the request for information is too broad in scope you can request that they narrow their requirements to cover for example only the injured part of your body, e.g. your elbow, head, back or neck, rather than disclosing all of your historic medical records. However, it is also important to be open and honest about the accident and the injuries you have suffered. Make sure that you claim from your insurers under medical pay coverage.
Keep All Records of the Accident and Injuries
If you incur any out-of-pocket expenses, need to pay for medical equipment or have to buy any replacements for items damaged or destroyed in the car accident, it is vital that you retain receipts for these. Remember to keep a note of the conversations you have, both with your insurance company and with other people involved in the accident. However, it is important NOT to admit any liability in these conversations and to discuss the facts only.
Compensation for Damage to Your Vehicle
You should obtain at least two estimates for the repair of your vehicle, and conduct your own research into your vehicle’s pre-accident value in the event that it is a total loss.
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