A hybrid with European flair

A hybrid with European flair

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Photos by -Autonet.ca
Staff
Published: 27 09 2005
The Audi Q7 hybrid concept study debuted at the 2005 Frankfurt Motor Show and is sure to disappoint many people ... only because it isn't yet going into production.

The Q7 hybrid features both an electric motor and a 4.2-litre V8 diesel engine along with Audi's four-wheel drive Quattro system. The company says the vehicle can go from 0-100 km/h in 6.8 seconds - this despite weighing over 5,300 lbs. This is only about 300 lbs heavier than the production version. One reason the hybrid concept was able to keep its weight down was because the electric motor and nickel-metal hydride (NiMH) battery are so light compared to other those in other hybrid systems.

It has an average fuel consumption rating of 12 litres/100 km., despite the fact that the hybrid version of the Q7 is heavier, has better acceleration and has the same top speed as a production Q7. The V8 engine produces 350-horsepower at 6,800 rpm.

When opening the hood, one wouldn't know just by looking that this Q7 is a hybrid. Only the gasoline engine can be seen. The electric motor sits between the V8 engine and the automatic transmission's torque converter. It is linked up to the FSI engine via a separating clutch that allows the vehicle to be propelled by either one of the drive units alone or by both acting in unison. Having the electric motor in this position means that it won't impede on the passenger compartment at all. Just like the production version of the Q7, the hybrid concept can offer up to three rows of seating.

Inside, the Q7 hybrid concept features Audi's Multi Media Interface (MMI), and a menu within the MMI allows the driver to see what system is powering the vehicle at any given time.

The electric motor can power the SUV at speeds of up to 30 km/h and can run for up to 2 km. in pure electric electric mode. Like most hybrid systems, the battery's power can be regenerated during normal braking. If the vehicle is coasting without the driver depressing the gas pedal, the diesel engine automatically shuts off and uses only electric power. In addition, the diesel engine will automatically shut off if the vehicle doesn't move for more than three seconds. Though different components of the vehicle are constantly switching on and off, it's all nearly imperceptible to the drive, according to Audi.

One more way in which the Q7 hybrid concept can help reduce the use of fossil fuels: it has solar cells integrated into its large glass sunroof, allowing the ventilation and air conditioning systems to be operated when the vehicle is parked. Part of the battery's power is used to help achieve this.

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