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 Q4 e-tron Concept
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| Audi Q4 e-tron Concept |
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<< Prev Page 2 of 2  The Q4 e-tron concept is identifiable as an Audi at first glance by the Singleframe with the brand logo, the four rings. And it will take no more than two glances to see that this is an electric Audi e-tron: Like the first production Audi with electric drive, the new concept vehicle also features a structured closed surface within a broad, almost upright octagonal frame in place of a traditional radiator grille. Air is supplied via large inlets that extend from below the two matrix LED headlights all the way down to the front apron.The prominently modelled fenders of all four wheels are a further classic Audi design feature that distinguishes the brand. The widened features of the Q4 e-tron concept are designed to be highly organic and flowing, and they add a characteristic touch to the side view. The accentuation of the rocker panel area between the axles, where the battery and thus the powerhouse of this SUV is located, is a typical feature of the e-tron. Large 22 inch wheels leave no doubt about the potential of the Audi e-tron concept. Its roof line slants down slightly toward the back, giving the silhouette a particularly dynamic look. The striking broad light band that connects the two lamp units on the rear end of the Audi Q4 e-tron concept was incorporated to reflect an element of the Audi e-tron. The relation within the e-tron family becomes visible even here. This also applies to the inside of the lights, where the significant sweep of the LED segments is also reminiscent of an element of the older brother. Finally, the body paint in "Solar Sky," a shade of blue that changes depending on the angle of the light, is a sustainable innovation in two senses: The paint, which was developed specifically for the Audi Q4 e-tron concept and produced under environmentally friendly conditions, effectively reflects a short-wave fraction of sunlight, near the infrared spectrum. This reduces the build-up of heat on the surface of the body and the interior significantly. This benefits the subjective well-being of the occupants while at the same time reducing the energy input required for the air conditioning, which is then not needed as much to cool the vehicle interior on warm days. This, in turn, improves the range and the global carbon footprint of the Q4 e-tron concept. The modular electrification platform (MEB) offers a broad range of drive variants and power levels. The performance version of the electric drive is installed in the Audi Q4 e-tron concept. The front and rear axles are each powered by an electric motor - the Q4 is a quattro. There is no mechanical connection between the axles. Instead, an electronic control ensures that the torque distribution is coordinated optimally, and it does so in fractions of a second. That enables the electric SUV to achieve optimum traction in all weather conditions and on any type of surface. In most cases, the Audi Q4 e-tron concept mainly uses its rear electric motor, a permanently excited synchronous motor, in order to achieve the highest efficiency. For reasons of efficiency, the drive torque is generally distributed with a rear-axle bias. If the driver demands more power than the rear electric motor can supply, the electric all-wheel drive uses the front asynchronous motor to redistribute the torque as required to the front axle. This also happens predictively even before slip occurs in icy conditions or when cornering fast, or if the car understeers or oversteers. The electric motor in the rear end has an output of 150 kW and mobilizes a torque of 310 newton meters; the front engine supplies the front wheels with up to 75 kW and 150 newton meters. The system power is 225 kW. The battery in the vehicle floor stores 82 kilowatt hours, which allows for a range of more than 450 kilometers according to the WLTP standard. The battery is charged with a maximum of 125 kilowatts. As a result, it takes hardly more than 30 minutes to return to 80 percent of the total capacity. However, the recipe for this excellent range involves far more than just a battery with a large capacity. Like the first member of the family, the Audi e-tron, the Audi Q4 e-tron concept is also a versatile artist when it comes to efficiency. From the low aerodynamic drag of the body, whose Cd value is 0.28, to the sophisticated recuperation strategy, the compact SUV uses every opportunity to optimize its range. The complex thermal management of the drive and battery, which involves a CO2 heat pump, also contributes to this. A key factor for the sporty character and outstanding transverse dynamics is the low and central position at which the drive components are installed. The high-voltage battery system is optimally matched to the dimensions of the Audi Q4 e-tron and is located between the axles in the form of a flat, broad block beneath the passenger compartment. The battery system weighs 510 kilograms. The center of gravity of the Audi Q4 e-tron concept is therefore at a similar level to that of a sedan with a conventional drive system. Axle load distribution is perfectly balanced at almost 50:50. The front wheels of the Q4 e-tron concept are guided on a MacPherson axle with adaptive dampers. In the rear, there is a multi-link axle with separate springs and adaptive dampers. MLB, MQB - modular longitudinal platform and modular lateral platform: These component systems for vehicle development represent a great success story in all segments of Audi and the Volkswagen Group. Previous platforms were designed primarily for the use of combustion engines. What is new and different about the modular electrification platform: It was designed specifically and exclusively for automobiles with electric drive systems. Axles, drives, wheelbases and the interaction between all components are selected and adapted specifically for e-mobility. The placement of the large-volume battery units and their geometry can be optimized without having to make concessions to other drive concepts that must always be taken into account in the MLB and MQB. At the same time, huge synergy potential can be opened up with the MEB. This platform serves as the basis primarily for electric cars in the high-volume A segment. It allows the best technology available to be developed jointly across brands and used in many different electric cars. In particular, the MEB also helps electric mobility to break through even in the particularly price-sensitive compact segment. The brand with the four rings launched its electric offensive with the world premiere of the all-electric SUV Audi e-tron in September 2018. By 2025, Audi will offer twelve automobiles with all-electric drive in the most important markets worldwide and achieve roughly one-third of its sales with electrified models. The SUVs within this portfolio include the e-tron and the e-tron Sportback due to make its debut in 2019. In addition, there will be a range of models with classic body layout such as Avant and Sportback. The range will cover every relevant market segment from the compact class to the luxury class. The Audi e-tron GT concept show car, a highly dynamic coupé with a low floor, made its debut at the Los Angeles Auto Show 2018. The technology in this automobile was developed in collaboration with Porsche; the design and character of the e-tron GT concept are packed full of unmistakable Audi DNA. The project will be developed into volume-production models by the end of 2020. The Premium Platform Electric (PPE) is a special joint project of the development departments at Audi and Porsche. It will be the foundation for multiple Audi model families with all-electric drive covering the high-volume B through D segments. << Prev Page 2 of 2 |
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