Audi.com Audi A8 hybrid is scheduled to begin in 2012.
2.0 TFSI engine and electric motor with an output of 180 kW and 480 Nm of torque a short period of time. This luxury sedan consumes 6.4 liters of gasoline for a distance of 100 km with CO2 emissions of less than 148 grams / km. In addition, this luxury sedan capable of traveling up to speeds of 100 km / h on electric power alone and the local emission 0 with a speed of 60 km / h at a distance of 3 km.
This sedan can reach 100 km / h in 7.7 seconds and has a max speed of 235 km / hour. The 2.0 TFSI has a displacement of 1984 cc and output of 155 kW (211 hp), with maximum torque of 350 Nm (258.15 pounds-ft) at 1,500 to 4,200 rpm. In a typical Audi, four-cylinder engine combines three powerful technological efficiency: FSI gasoline direct injection, turbocharging and Audi valvelift system. The latter is further increased the power of torque, and efficiency by switching the exhaust stroke of the valve between the two stages depending on load and engine speed
The 2.0 TFSI been modified in some areas. Alternator as an additional unit has been dropped, while the crankshaft bearings and fine tuning of the turbocharger is adjusted to the new requirements. A system of secondary air in the cylinder head ensures that the treatment of exhaust gas cuts very fast.
Integrated in the engine control units, hybrid managers efficient change control and smooth transition between operating modes. Eight-speed tiptronic extensively modified to serve the transmission of electricity, without the aid of a torque converter. The place was taken by the disc-shaped electric motor. Permanent magnet synchronous motor (PSM), which also serves as a starter and - during deceleration - as a generator, has a peak output of up to 40 kW and 210 Nm of torque for short periods of time. The electric motor is integrated in the TFSI engine cooling circuits.
Hybrid transmission is very comfortable and quick-shifting, which guides the engine torque to the front wheels, greatly contributes to the efficiency of the Audi A8 hybrid - a gear which is widely spread. When the 2.0 TFSI is disabled, an electric pump to maintain oil pressure in the hydraulic system to maintain comfortable start-stop feature.
Motor operation combined with multi-plate clutch in oil bath and the joining or separating and TFSI it. Controlled by intelligent management, ultra-precise clutch operation, gently and quickly in all situations.
Power electronics, in the form of pulse-controlled inverter, the battery serves as a controller, which outputs a direct current, and electric motors, which operate on alternating current. The water is cooled by a separate low-temperature circuit, components are distinguished by low volume and weight. Electronic power converters including DC / DC a couple of consumers in the 12V electrical system with high voltage network.
Informative: the displays
The Audi A8 hybrid comes with a display concept for making the driving states of the hybrid drive tangible to the driver. The tachometer on the instrument cluster has been replaced by a power meter, with a needle that indicates the total system output on a scale of 0 to 100 percent. A second scale is divided into colored segments – the gray and orange sections clearly indicate the drive mode currently used by the sedan. An additional instrument displays the charge level of the lithium-ion battery.
At the same time, the energy flow display clearly depicts the mode of operation and active components of the hybrid drive. It can be called up via the driver information system and the central MMI display. The MMI monitor shows a bar graph of the average consumption and recuperation quantity in five-minute increments.
Although room has to be made for all of the hybrid technology, the A8 hybrid is not a Spartan model. It comes standard with particularly efficient LED headlights, the Bose sound system, three-zone automatic air conditioning and a metallic paint finish.
Design
The 18-inch cast wheels of the Audi A8 hybrid feature a ten-arm turbine design – their ten spokes resemble turbine blades. The tires have the size 235/55 R18. As an option, there are 19-inch wheels with a two-color paint finish and in the same design, which is typical for hybrid vehicles from Audi, with 245/45-series R19 tires.
Beyond that, the Audi A8 hybrid is further distinguished by the subtle differentiation on the outside. The rear hatch and the fenders bear hybrid badges; these are illuminated in door sill trims. Arctic Silver is available as an exclusive paint finish.
The A8 hybrid will be one of the lightest vehicles in its competitive segment, drawing on Audi’s comprehensive ultra-lightweight competence. Except for the B-pillars of hot-shaped, ultra-high-strength steel, its ASF (Audi Space Frame) body is made entirely of aluminum. Weighing just 231 kilograms (509.27 lb), it is roughly 40 percent lighter than a comparable steel construction.
The ASF body is structured according to bionic principles. Its frame comprises extruded sections and pressure diecast parts of aluminum; the aluminum panels – such as the roof panels and the side panels – are joined by friction connections. Like the bones of a human skeleton, all components combine optimal function with low weight. The material is used only where necessary and always in a tailored configuration.
The equipment, data and prices specified in this document refer to the model range offered in Germany. Subject to change without notice; errors and omissions excepted.
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