Audi’s DTM program—think the German equal of NASCAR—ended at the finish of 2020, and 2021 is the German automaker’s remaining calendar year in System E. But the expense that Audi Activity produced in equally all those applications will not go to waste, as aspects of each and every are combining to ability an outrageous-wanting equipment intended to compete in the Dakar Rally. Unveiled online now, the car or truck is termed the Audi RS Q e-tron, and Audi claims that campaigning it in just one of the world’s hardest off-street races will allow the corporation test and develop its electric powertrains “underneath excessive conditions.”
Even though Audi’s racing exploits have typically taken location on the confines of race tracks for the final several a long time, the manufacturer has a potent connection with rallying it employed the Environment Rally Championship in the 1980s to exhibit its quattro all-wheel-travel technological know-how. They might both of those involve rallying, but Dakar is a more durable problem than the WRC, as it is contested around two months in distant sites, with distances of 500 miles (800 km) a day.
“That’s a incredibly extensive length,” claims Andreas Roos, who is dependable for the Dakar challenge at Audi Sport. “What we are attempting to do has by no means been carried out just before. This is the ultimate problem for an electric drivetrain.”
The nature of the Dakar ruled out a purely battery-electric powered method, while these a point has been tried in the previous. Rather, Audi Sport has long gone for a sequence hybrid approach—and certainly, collection hybrid supporters, we feel this a person passes the purity exam.
Three System E MGUs and a DTM motor stroll into a bar…
The tube-framed RS Q e-tron makes use of a pair of 250 kW (335 hp) electrical motor/generator models (MGUs) from Audi Sport’s current Method E program, 1 mounted at each individual axle. These are fed by a 52 kWh (useable) lithium-ion battery pack that could have been borrowed from an Audi e-tron FE07 Method E automobile. Total energy output is 500 kW (670 hp).
Then you can find a 3rd System E MGU, which sorts aspect of the strength converter that fees the battery while the RS Q e-tron is on the transfer. (The two propulsive MGUs will also regenerate energy beneath braking.) The other ingredient of the electricity converter is a 2. L TSFI motor from Audi Sport’s DTM automobile, which is connected to that 3rd MGU by a shaft. You could possibly not be expecting a hugely strung racing engine to perform properly as a generator, but Audi Activity states the motor is really very successful when in the ideal rev range.
“We reduced the output from 450 to about 200 kW. It operates in just the narrow optimized rpm selection of amongst 4,500 and 6,000, instead of 9,000 rpm,” claimed Stefan Dreyer, head of enhancement of motorsport jobs at Audi Activity. “The engine has to operate as proficiently as doable in the warmth, cold, and at altitude. We optimized the pistons, injectors, and turbocharger for this and invested a large amount of time on the test bench. We are very pleased of the specific intake that is properly below 200 grams for each kWh.”
“The drivetrain is extremely efficient. There is hardly any electrical power decline. You do not have to count on temperature difficulties though you’re driving little by little in the sand. But above all, the electrical drivetrain is much easier to handle in all of the given predicaments,” Dreyer stated. “The highest torque is offered from zero revolutions. You can regulate the drivetrain extremely exactly, regardless of whether the vehicle is going around jumps or driving in the desert. The electric powered drivetrain does not respond to external influences this kind of as air force, temperature, and humidity. And you can use it at full ability throughout the rally. It is all much much more consistent than with a combustion motor.”
The RS Q e-tron will also be recharged each evening. Whilst Audi Sport has not demonstrated off the charging option just but, it says it plans to use as considerably clear electricity as attainable. And the vehicle has been developed to be highly serviceable by a small assistance workforce.
The prototype RS Q e-tron very first acquired its ft muddy at the starting of July, and it’s now undergoing an in depth take a look at application for the remainder of the calendar year, ahead of the 2022 Dakar Rally, which requires area in Saudi Arabia next January.
Audi Activity will enter 3 RS Q e-trons run by Q Motorsport. One particular car will be shared by Mattias Ekström (who received DTM and Rallycross championships for Audi) and Emil Bergkvist, a person by 14-time Dakar winner Stéphane Peterhansel and Edouard Boulanger, and the 3rd by Carlos Sainz (double WRC winner as nicely as 3-time Dakar winner) and Lucas Cruz.
Listing picture by Audi Activity