Take charge: Audi e-tron antecedent – recuperation test

Posted on 08. Aug, 2018 by in Audi Canada

The scenario: Each kilometer downhill brings around an additional kilometer in range
At 4,302 meters (14,115 ft), Pikes Peak looms high in a southern Rocky Mountains. Where Walter Röhrl won a world’s many famous mountain stand in a Audi Sport quattro S1 behind in 1987, it is a Audi e-tron antecedent that is now causing a prodigy with a recuperation complement that is non-static and so a many fit among all a competitors. On a 31 kilometer (19 mi) downhill drive, a electric SUV feeds so most appetite behind to a battery that it can cover approximately a same stretch again. The disproportion in altitude of about 1,900 meters (6,233.6 ft) provides a required conditions for this. The Audi e-tron antecedent recuperates appetite with adult to 300 Nm of torque (221.3 lb-ft) and 220 kW of electric appetite – some-more than 70 percent of a handling appetite input. No array prolongation indication has achieved such a value adult to now.

The recuperation concept: from freewheeling to a one-pedal feeling
The recuperation complement contributes to adult to 30 percent of a electric SUV’s range. It involves both a dual electric motors and a electrohydraulically integrated stop control system. For a initial time, 3 opposite recuperation modes are combined: primer coasting recuperation regulating a change paddles, involuntary coasting recuperation around a predictive potency assist, and stop recuperation with well-spoken transition between electric and hydraulic deceleration. Up to 0.3 g, a Audi e-tron antecedent recuperates appetite usually around a electric motors, though regulating a required stop – that covers over 90 percent of all decelerations. As a result, appetite is fed behind to a battery in most all normal braking maneuvers.

The motorist can name a grade of coasting recuperation in 3 stages regulating a steering circle paddles. At a lowest stage, a car coasts with no additional drag torque when a motorist releases a accelerator pedal. At a tip stage, a electric SUV reduces a speed noticeably – a motorist can delayed down and accelerate regulating usually a accelerator pedal. This creates a one-pedal feeling. There is no need to use a stop pedal in this deceleration scenario.

The circle brakes are concerned usually when a motorist decelerates by some-more than 0.3 g regulating a stop pedal. They respond intensely quickly, interjection to a new electrohydraulic actuation concept. Audi is a initial manufacturer worldwide to use this judgment in a array prolongation car with electric drive. A hydraulic piston in a compress stop procedure generates additional vigour and so additional stop force for a recuperation torque. When programmed puncture braking is performed, there are usually 150 milliseconds between a arising of a deceleration and a participation of limit stop vigour between a pads and disks. Thanks to this fast vigour buildup, a braking stretch is condensed by adult to 20 percent compared with a required stop system.

Depending on a pushing situation, a electrohydraulically integrated stop control complement decides – electrically on any particular spindle – either a Audi e-tron antecedent will decelerate regulating a electric motor, a circle brake, or a multiple of a two. The stop pedal is decoupled from a hydraulic system. The transition from a engine stop to a pristine attrition stop is smooth, and a motorist does not notice it. This complement allows a electric SUV to feat a limit recuperation intensity in a targeted demeanour with support from a customary potency assist. The complement uses radar sensors, camera images, navigation information and Car-to-X information to detect a trade sourroundings and a route. The motorist is shown analogous information in a Audi practical cockpit as shortly as it would be essential to take a feet off a accelerator pedal. By interacting with a discretionary adaptive journey assist, a potency support can also decelerate and accelerate a electric SUV predictively.

The asynchronous motors: clever performance
What is fascinating about a SUV with electric expostulate is not only a potency though also a performance. Its dual electric motors have an outlay of 265 kW and rise 561 Nm (413.8 lb-ft) of torque. They can broach this rise opening for adult to 60 seconds. This way, they concede a car to accelerate from a delay to a electronically singular tip speed of 200 km/h (124.3 mph) several times running though outlay losses. The limit expostulate torque is benefaction within fractions of a second and provides huge torque. By changeable from expostulate operation D to S and entirely joyless a right-hand pedal, a motorist can activate boost mode. It is accessible for 8 seconds. Here, a expostulate produces 300 kW of complement outlay and 664 Nm (489.7 lb-ft) of torque. The Audi e-tron antecedent sprints from 0 to 100 km/h (62.1 mph) in less than 6 seconds.

Additional information about a Audi e-tron antecedent is accessible during www.e-tron.audi.

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