2015 Mercedes-Benz Intelligent Aerodynamic Automobile concept.
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At the IAA Cars 2015, Mercedes-Benz is showing the Intelligent Aerodynamic Automobile, the “Concept IAA”. The study combines world-beating aerodynamics with irresistible design.
Two cars in one.
The Mercedes-Benz “Concept IAA” (Intelligent Aerodynamic Automobile) is two cars in one: an aerodynamics world champion with a Cd value of 0.19 and a four-door coupé embodying irresistible design. The study, which is celebrating its world premiere at the IAA Cars 2015, switches automatically from design mode to aerodynamic mode when the vehicle reaches a speed of 80 km/h, whereby numerous aerodynamics measures alter the shape of the vehicle. Inside, the “Concept IAA” continues the design line of the S-Class and S-Class Coupé and offers new touch-based functions.
At the touch of a button, or automatically on reaching a speed of 80 km/h, the Mercedes-Benz “Concept IAA” performs a fascinating transformation in which the captivatingly beautiful four-door coupé turns into an aerodynamics world champion: eight segments extend at the rear, increasing its length by up to 390 millimetres; front flaps in the front bumper extend by 25 millimetres to the front and 20 millimetres to the rear, improving the air flow around the front end and the front wheel arches; the Active Rims alter their cupping from 55 millimetres to zero; and the louvre in the front bumper moves 60 millimetres to the rear, improving the underbody air flow. “The “Concept IAA” applies intelligent innovations to resolve the conflicting aims of functionality and aesthetics and shows that we still have plenty of ideas on how to achieve further improvements in efficiency,” says Prof. Dr Thomas Weber, Member of the Daimler Board of Management responsible for Group Research and Head of Mercedes-Benz Cars Development.
Systematic digital networking.
Equally, the “Concept IAA” exemplifies the fundamental technological changes which are taking place in the automotive industry. The primary driving force behind this process of change is digitisation – buzzword: Industry 4.0. For Mercedes-Benz, a continuous digital process chain from research and development through production to marketing and sales, logistics and the service area is already becoming reality. The design and aerodynamic shaping of the “Concept IAA” would not have been possible without the systematic digital networking of different specialist departments. The designers have employed the latest algorithmic design methods to handle the complex geometric design. The individually adapted software enables dynamic design in three-dimensional space. This dynamic modelling makes it possible to display and model different states simultaneously. The resultant highly complex geometries were turned into reality with the aid of innovative production technologies (rapid prototyping). The world-beating aerodynamics were developed in parallel with the aid of so-called numeric flow simulation. The aerodynamics experts from Mercedes-Benz have calculated some 300 variants.
A foretaste of the near future.
The “Concept IAA” also offers a look into the future in areas which are not apparent at first glance. The study features Car-to-X technology, for example, which enables the study to communicate with other vehicles or other sources of information. This represents a major advance in helping to avoid accidents, as obstacles or events which are not visible to the vehicle itself can be detected – the “Concept IAA” is able to look around the corner, as it were. With this and its interior and operating concept, the “Concept IAA” also offers a foretaste of the business saloon of the near future.
Dynamic basic shape.
With its dynamic basic shape (“drop shape”), elegantly purist overall design and aerodynamic innovations, the four-door “Concept IAA” Coupé Saloon is a symbiosis of design and aerodynamics. The vehicle interprets classic sports car proportions in a modern vein: the long bonnet flows aerodynamically into the compact, set-back greenhouse, whose roof slopes down elegantly towards the rear, ending in an airflow break-away edge.
The vehicle's elegant side view combines a purist, long basic volume with highly pronounced wheel arches. The sporty, minimalist front of the show car boasts a striking “shark nose” profile. Like the front, the show car's rear end also presents a clear-cut and purist appearance. As on the front grille, horizontal louvres lend structure to the shape of the rear end. An illuminated ring running around the rear end adds the finishing touch to the high-tech appearance.
Modern luxury in the interior.
The interior of the “Concept IAA” combines stylish sportiness with modern luxury and continues the design line of the S-Class and S-Class Coupé. The choice of colours and materials conjures up extrovert contrasts between anthracite and white as well as between aluminium and cut glass. Elegantly curved forms, flowing lines, high-quality materials and the touch-based operating philosophy provide for a high level of functionality. The two-spoke steering wheel is a progressive further development of the Mercedes-Benz steering wheel philosophy.
The open structure of its horizontal spokes is highly intricate in design, as a manifestation of intelligent and elegant lightweight construction. The steering wheel also incorporates touch-based operating functions, offering great functionality in the most compact dimensions as a study in perfect ergonomics: OFN (Optical Finger Navigation) buttons, embedded in the clusters in a similar hovering manner as the touchpad in the centre console, enable the driver to scroll through the instrument cluster menus. The OFN button on the left controls the left-hand display, while the button on the right controls the right-hand display. In this way, the “hands on the wheel, eyes on the road” operating philosophy which has been applied by Mercedes-Benz for many years now is implemented in a manner which is at once brilliantly simple and uncompromising.
Real Life Efficiency.
The “Concept IAA” is powered by a petrol/electric plug-in hybrid drive with a total output of 205 kW (279 hp). This provides it with a top speed of 250 km/h (electronically limited). CO₂ emissions and electric range depend on the mode in which the vehicle is tested: in aerodynamic mode the “Concept IAA” manages an all-electric range of 66 kilometres and emits 28 g of CO₂ per km. In design mode the range stands at 62 km and CO₂ emissions at 31 g per km. As urban driving is accorded a two-thirds weighting in the current New European Driving Cycle (NEDC), the advantage of aerodynamic mode is not revealed as clearly in this test as in real-life driving. Real-life fuel savings are all the greater, however – in keeping with Mercedes-Benz’s customer-oriented “Real Life Efficiency” philosophy.
Part of a long line.
The “Concept IAA” show car forms part of a long line of aerodynamically perfected vehicles from Mercedes-Benz. With a dimensional concept that makes it suitable for everyday use, this four-seater attains a Cd value of 0.19, assuring it of a place in the gallery of record-breaking and racing vehicles such as the Mercedes-Benz W 25 record-breaker of the 1936 season.
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