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Daimler 360 GRAD - FAKTEN zur Nachhaltigkeit 2008 Daimler Nachhaltigkeitsbericht 2008 / Environmental protection, innovation, and safety / Innovation, development and safety / Fuels for the future Daimler’s fuel road map Daimler’s fuel road map 1. Conventional fuels such as gasoline and diesel will continue to be used in the years ahead, which is why they must be continually optimized. The goal here is the worldwide use of sulfur-free fuel that contains low levels of aromatic compounds. 2.Daimler believes that CNG (compressed natural gas) is a viable option for certain applications, because it contains less carbon than gasoline or diesel. 3. Beside BTL (biomass-to-liquid) fuels, GTL (gas-to-liquid) fuels are the cleanest and highest-quality fuels for diesel engines. This is because GTL diesel is free of sulfur and aromatic compounds – although not CO 2 -neutral – and can be adapted to meet many of the requirements associated with internal combustion engines. 4. Hydrogen will power the fuel cell vehicles of the future. In the fuel cell, the hydrogen reacts with oxygen to form water. Global hydrogen requirements have until now been largely met through steam reformation from natural gas. However, since this process still gives rise to CO 2 emissions due to the carbon content of the gas, suitable economically viable processes for H2 production from renewable sources must be developed. 5. Bioethanol and biodiesel are intelligent options for the short to medium term when blended with conventional fossil fuels. However, such crop-derived fuels have a lower energy content, so their fuel economy is not as favorable as that of fossil fuels. In addition, the aggressiveness and viscosity of biodiesel, and a more pronounced clogging of the particulate filter, make its use in pure form prohibitive in modern diesel automobiles. 6. BTL fuels made from biomass will soon grow in importance, initially as an admixture blended with gasoline and diesel fuel. The Group is currently working on ways to further the development and use of largely CO 2 -neutral synthetic biofuels. These fuels represent the optimal use of biomass, contain no sulfur or aromatic compounds, and their production does not compete with the cultivation of food crops. In addition, they can be excellently matched to the requirements of internal combustion engines. 7. The fuel of the future is hydrogen from renewable sources, which in combination with the fuel cell will guarantee mobility free of emissions and CO 2 . Suitable production processes involve electrolysis using electricity derived from renewable sources (hydroelectric, wind, solar, and geothermic power) or from the gasification of biomass.
Daimler 360 GRAD - FAKTEN zur Nachhaltigkeit 2008 Daimler Nachhaltigkeitsbericht 2008 / Environmental protection, innovation, and safety / Innovation, development and safety / Design for the environment Environmentally responsible product development The continual improvements made to the environmental compatibility of Daimler vehicles are now part of our development specifications. Serving as a cross-divisional team, the Group’s DfE (Design for Environment) experts are involved in all stages of the vehicle development process. Their job is to evaluate new component and vehicle concepts for future Mercedes-Benz passenger cars and commercial vehicles by developing overall lifecycle assessments. Environmentally responsible product development begins with the selection of suitable raw materials and ends with recycling-friendly design and production processes. These make it possible to reuse or recycle used components at a later stage. Thanks to efficient disassembly and recycling concepts, Daimler is forced to dispose of fewer and fewer parts from end-of-life passenger cars and commercial vehicles. Wherever possible, high-quality secondary (recycled) raw materials are used in place of expensive and precious primary resources. In the plastics sector, preference is given to recycled raw materials or recyclable materials. To date, the Group has successfully tested the use of recycled raw materials for approximately 10 percent of the volume of plastics employed in its vehicles. These materials have subsequently been approved for series production applications. Materials used in the C-Class station wagon according to VDA 231-106 Environmentally responsible car development. In 2005 the Mercedes-Benz S-Class became the world’s first automobile to receive an environmental certificate. The certificate, which is issued by TÜV Management Service GmbH in Munich, was also granted to the new C-Class in 2007, thereby confirming that the model was developed in line with high environmental standards. Compared to the previous version, the new C-Class station wagon model has made advances across the entire product lifecycle with regard to important aspects such as fuel consumption, exhaust emissions, and choice of materials.
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