Power Wheels 12v Battery

Audi A6 Hybrid offers V6 performance with 4 cylinder efficiency

Audi is touting its new A6 Hybrid as a vehicle that brings the best of two worlds to the new car showroom. The A6 is being promoted as having V6 like performance while delivering four cylinder engine type efficiency stretching out a gallon of gas for 36 miles while traveling over 60 mph on electric only power.

Under the hood of the Hybrid A6 is the 2.0 four cylinder TFSI and the electric motor that form a parallel hybrid system. Together the two units have a brief system output of 245 hp and a system torque of 354.03 lb-ft. The 2.0 TFSI in the Audi A6 hybrid has a displacement of 1,984 cc. and the engine has an output of 211 hp, with a maximum torque of 258.15 lb-ft at 1,500 to 4,200 rpm. In the typical Audi manner, the four-cylinder engine combines three potent efficiency technologies: FSI gasoline direct injection, turbo charging and the Audi valvelift system (AVS). The AVS further increases power, torque and efficiency by switching the stroke of the exhaust valves between two stages depending on the load and engine speed.

For use in the Audi A6 hybrid the 2.0 TFSI underwent modifications in several areas. The alternator as an ancillary unit has been dropped, while the crankshaft bearing and the fine tuning of the turbocharger were adapted to the new requirements. A secondary air system at the cylinder head makes sure that the exhaust gas treatment cuts in particularly fast. Integrated in the engine control unit, the hybrid manager controls the efficient change and smooth transitions between the operating modes, and was fully developed by Audi alone.

The power electronics, in the form of a pulse-controlled inverter, serve as a controller between the battery, which outputs direct current, and the electric motor, which operates on alternating current. Water-cooled by a separate low-temperature circuit, the component is distinguished by its low volume and weight. The power electronics include a DC/DC converter that couples the consumers in the 12V electrical system with the high-voltage network. A permanent magnet synchronous machine serves as an electric motor, as a starter and – during deceleration – as a generator. It briefly outputs up to 54 hp of power and 154.89 lb-ft of torque. The electric motor is integrated in the cooling circuit of the TFSI engine.

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