Audi A1 e-tron

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[Source: Audi]


Ingolstadt/Geneva, 2010-03-01 AUDI AG: driveline strategy for the future – electric mobility as an integrated concept

  • World premiere for A1 e-tron study at Geneva Motor Show
  • "e-tron" to be Audi's brand name for electric mobility

Audi A1 e-tron Audi will be expanding its "e-tron" model family step by step: the A1 e-tron design study that the company is exhibiting at the Geneva Motor Show is an innovative Mega City Vehicle (MCV). Like the sports cars in the same family, it is electrically propelled and has a range of more than 50 kilometers (31 miles) in city traffic. With a peak power output of 75 kW (102 hp), the A1 e-tron is also fun to drive.

When the battery's energy supply is exhausted, it is recharged by an exceptionally compact "range extender" consisting of a single-rotor Wankel engine and an electrical generator with a charge rating of up to 15 kW.

This device gives the A1 e-tron an additional range of 200 kilometers (124 miles). According to the draft standard for determining the fuel consumption of range-extender vehicles, the mean fuel consumption is 1.9 liters per 100 kilometers (123.8 US mpg), equivalent to CO2 emissions of only 45 g/km (72.42 g/mile).

SOURCE: 4/22/10

Audi is looking at the rotary engine, fitting a Wankel powerplant to the A1 e-tron concept shown in Geneva in March. The one-disc rotary engine was co-developed with Austrian engineering house AVL. Car&Driver experienced its operation, and it’s smooth and quiet and avoids the shuddering on restart of a piston engine. Who wants to be disturbed as they’re humming and singing and smiling while depleting their electric-vehicle’s batteries? Not the Car&Driver folks. It’s certainly nice, but C&D next question was whether we could see a powerful rotary-engined Audi without all the electric-motor wizardry. Not a chance, says Ingolstadt. Pity.

Here, a tiny, 0.25-liter Wankel rotary gas engine—mounted in the rear of the car will hum at a constant 5000 rpm to generate electricity and recharge the batteries, extending the car’s range by another 124 miles per tank. A regenerative braking system can also feed energy back into the system, while the range extender can be switched on and off at will by the driver.

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