Test laboratory in the desert
Highlights of the Audi RS Q e-tron
Audi RS Q e-tron
The distinguishing aspects of the Audi RS Q e-tron:
- Futuristic prototype with innovative drivetrain concept
- High-voltage battery is charged while driving via an energy converter
- Three motor-generator unit (MGU), one on each axle and one part of the energy converter
- The battery weighs about 370 kilograms and has a capacity of around 50 kWh
- The efficient combustion engine has a specific consumption of below 200 grams per kWh
Because there are no charging opportunities in the desert, Audi has chosen an innovative charging concept: On board of the Audi RS Q e-tron, there is the highly efficient TFSI engine from the DTM. It is part of an energy converter that charges the high-voltage battery while driving. Since the combustion engine is operated in the particularly efficient range of between 4,500 and 6,000 rpm, the specific consumption is well below 200 grams per kWh.
The drivetrain of the Audi RS Q e-tron is electric. The front and rear axles are both fitted with a motor-generator unit (MGU) from the current Audi e-tron FE07 Formula E car. Only minor modifications had to be made to use the MGU in the Dakar Rally.
A third MGU, of identical design, is part of the energy converter and serves to recharge the high-voltage battery while driving. In addition, energy is recuperated during braking. The battery weighs about 370 kilograms and has a capacity of around 50 kWh.
|Audi RS Q e-tron|
|Vehicle type||Cross-Country Rally Car (Category T1E – alternative drivetrains)|
|Chassis||Steel tube frame in combination with structural components in carbon/cylon fiber composite|
|Drivetrain||All-wheel drive with electrically driven axles|
|E-drivetrains on the axles||One Audi MGU05 from Formula E per axle|
|Output||Total system power under 300 kW*|
|Transmission||One single-speed racing gearbox per axle, including limited-slip differential (software-based), virtual center differential with freely selectable torque distribution on front and rear axle|
|Battery||High Voltage Battery System (HVBS), approx. 370 kg (wet), lithium-ion cells, usable battery capacity approx. 52 kWh, charging with max. 220 kW while driven through energy converter|
|Energy converter||2.0 liter four-cylinder turbo engine from the DTM coupled via a shaft with a generator (Audi MGU05 from Formula E) Speed- and torque-controlled generator operation at the energy converter’s maximum efficiency with intelligent battery charging and energy management|
|Tyres||BF Goodrich front/rear 37x12,5 R17|
4,500 / 2,300 / 1,950
Length / Width / Height (mm)
|Minimum weight||2,000 kg without drivers*|
|Fuel tank capacity||Max. 295 liters|
|0–100 km/h||Less than 4.5 seconds (on loose surface)|
|Top speed||Limited to max. 170 km/h by regulations*|
|*Regulations not finalized|
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