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Monday, January 25, 2021

All-electric 530hp BMW i4 reaches 100 km/h in four seconds

When an ideal balance is called for between dynamics and ride comfort, the BMW 3 Series and 4 Series models consistently set the benchmark within their segments in the premium market. In terms of electrically powered vehicles, the new BMW i4 is set to take on this role very soon. The first purely electrically powered 4-door Gran Coupé enriches locally emission-free mobility with sheer driving pleasure.

“For the first time, we’ve developed a BMW with sporty DNA for purely electric driving entirely from scratch,” explains project manager David Alfredo Ferrufino Camacho. “The BMW i4 offers everything BMW stands for – and it’s fully electric, too.”

A few months prior to its world premiere, the BMW i4 is currently completing the final phase of driving dynamics testing. The focus here is on the integrated application of all drive and suspension components, ensuring that the spontaneous power delivery of the electric motor is combined with precisely controllable handling in every situation, fascinating cornering dynamics, optimised traction in all weather and road conditions and perfectly balanced ride comfort. For the purpose of this fine-tuning process, the BMW Group applies its technological expertise in the areas of drive and suspension drawn from decades of experience. This gives the new BMW i4 a mature premium character and makes for a driving experience that is unique within the competitive environment.

Excitingly calm: sprinting with the BMW i4.

With a maximum output of up to 390 kW/530 hp, the electric powertrain in the BMW i4 enables impressive acceleration manoeuvres: it reaches the 100 km/h mark in just four seconds from standstill. But even more impressive than its pure sprint capacity is the driving response it conveys. A model-specific damper technology reduces the dipping movements of the body at the moment of set-off, while the actuator-related wheel slip limitation (ARB) developed by BMW with its extremely fast and precise control guarantees optimum traction and perfect straight-line stability at all times – even on slippery road surfaces. This makes the catapult-like sprint in the new BMW i4 an experience that is both exciting and carefree, because it is not affected by drive slip or course corrections.

However, fascinating acceleration is only one aspect of the superior performance characteristics that define the BMW i4. Other distinguishing features include its spontaneous reactions to every movement – not just of the accelerator pedal but also of the steering and the brake pedal. The prerequisites for this high level of agility and precision are anchored in the underlying vehicle concept of the BMW i4. This includes the car's long wheelbase, wide track widths, model-specific camber values, large wheels, as well as the high torsional rigidity and the vehicle’s low centre of gravity and weight balance.

Effortless precision: taking the bend on the ideal line.

All these parameters were taken into account in detail in the integrated application of the drive and suspension components so as to ensure hallmark BMW sporty flair in every situation on the road. The design and tuning of the suspension and damping systems consistently ensure optimum road contact. At the same time, the virtually silent drive in combination with the sophisticated suspension technology gives the impression of an effortlessly floating vehicle even at higher speeds, entirely unaffected by bumps in the road or difficult traction conditions.

“The BMW i4 conveys the feeling of being light and agile yet also solid and authoritative,” says project manager David Alfredo Ferrufino Camacho. “With its superior directional reliability and high level of cornering stability, it seems to literally attach itself to the road. All electric vehicles are capable of fast straight-line acceleration. But that’s not enough for us at BMW.”

The BMW i4 is also effortlessly controllable – even in highly dynamic driving situations. In addition to its neutral self-steering behaviour and its powerful, precisely controllable brakes, the steering in the BMW i4 is a major contributing factor here: it responds directly and with a high degree of accuracy, offering the driver precise feedback at all times while remaining entirely independent of drive forces, even during intensive acceleration or deceleration. Lane changes at high speeds are mastered with ease, while relaxed driving over long distances is ensured by the speed-related Servotronic power steering and the fact that the vehicle is largely insusceptible to any disruption caused by road bumps.

Typical BMW: the unique balance between sporty flair and ride comfort.

The distinctive driving dynamics of the BMW i4 derive partly from the fact that its performance characteristics are not achieved at the expense of driving comfort. The purely electrically powered Gran Coupé is characterised by unrestricted suitability for day-to-day use. Fitted with a high-voltage storage system featuring the latest battery cell technology that enables a range of up to 600 kilometres (WLTP), the chassis technology of the BMW i4 is designed for long-distance comfort, too. It is based on the high-quality damper technology, supplemented with model-specific components and separately tuned. This effectively reduces body vibrations due to road unevenness and on bends. The model-specific fine-tuning of the suspension and damping contributes significantly to the harmonious driving characteristics of the BMW i4.

Scania plans to introduce long-distance battery electric trucks.

Scania’s aim is to be the leader in the shift towards a sustainable transport system. Battery electric vehicles will be the main tool to drive this shift and to enable decarbonised transport solutions with better transport economy to customers.

The rapid development of electric solutions for heavy duty vehicles includes the fast advancement of battery technology in respect of energy storage capacity per kg. Charging time, charging cycles and economics per kg are improving rapidly. This means these solutions will become more cost effective, primarily in repetitive and predictable applications. They will gradually overtake Scania’s industry-leading fossil and biofuel powered solutions in most transport applications.

“We see that battery electric solutions are the first zero-tailpipe emission technology to reach market broadly. For the customer, a battery electric vehicle requires less service than a conventional one, meaning higher uptime and improved costs per km or hour of operations. We have learnt from the bus segment where transformation started earlier and battery electric options are in high demand. Scania’s timing in that segment was not optimal, however it provided good experiences and we are presently accelerating with the new Scania bus range. It also gave us good base knowledge as we ramp up the electrified truck business,” says Alexander Vlaskamp, Head of Sales and Marketing at Scania.

The company has already launched a fully electric truck as well as a plug-in hybrid truck. In a few years’ time, Scania plans to introduce long-distance electric trucks that will be able to carry a total weight of 40 tonnes for 4.5 hours, and fast charge during the drivers’ compulsory 45-minute rest.

By 2025, Scania expects that electrified vehicles will account for around 10 percent or our total vehicle sales volumes in Europe and by 2030, 50 percent of our total vehicle sales volumes are expected to be electrified.

Battery electric vs hydrogen Scania has invested in hydrogen technologies and is currently the only heavy-duty vehicle manufacturer with vehicles in operations with customers. The engineers have gained valuable insights from these early tests and efforts will continue. However, going forward the use of hydrogen for such applications will be limited since three times as much renewable electricity is needed to power a hydrogen truck compared to a battery electric truck. A great deal of energy is namely lost in the production, distribution, and conversion back to electricity.

Repair and maintenance also need to be considered. The cost for a hydrogen vehicle will be higher than for a battery electric vehicle as its systems are more complex, such as an extensive air- and cooling system. Furthermore, hydrogen is a volatile gas which requires more maintenance to ensure safety.

However, hydrogen is a promising energy carrier; good way of storing energy over long cycles, and will play an important role in decarbonisation if produced in an environmentally friendly way. Scania looks forward to sourcing fossil free steel for its trucks as hydrogen will play a greater role in several industries.

Stationary fuel cells are an important component of the electric charging system. This solution is especially promising in areas with abundant renewable energy, and in rural areas off the main electricity grid.

“To do what’s best for both our customers total operating economy and our planet, we are not closing the door on any possibilities. It is clear that Scania’s focus in the here-and-now perspective as well as short- term is a combination of renewable fuels and battery electric vehicles. We see that for basically all segments,” Vlaskamp continues.

Committed to more electric products Scania’s science based climate targets will see the company cut CO2 emissions from its own operations by 50 percent by 2025, as well as reduce emissions from the customers’ vehicles by 20 percent during the same period. To fulfil these far reaching targets, Scania’s focus is on well-to-wheel, which is more stringent than many of the legislative regulations coming up which centre on tank-to-wheel.

The company commits to launch at least one new electric product application in the bus and truck segment every year. At the same time, societal investments in a solid infrastructure for battery electric vehicles remains a priority.

“Scania’s focus is our customers’ business. Transport operators must be able to continue performing assignments in a sustainable way at a reasonable cost,” Vlaskamp concludes.

Thursday, January 7, 2021

Volkswagen ID.4 to feature Intelligent Regenerative Braking

Regenerative braking, in other words energy recovery when decelerating, greatly boosts the range of any electric vehicle. However, what should happen when drivers of electric vehicles take their foot off the right-most pedal is a difficult, philosophical question. Should the electric drive motor act as a generator, converting kinetic energy into electrical energy, or should it run without generating electrical energy, so that the vehicle’s momentum is used for coasting?

The answers to these questions vary greatly depending on the manufacturer and model. Some electric vehicles recover energy whenever a driver lifts off the right-most pedal after acceleration. In the case of the new ID.4 electric compact SUV, Volkswagen opted for a different strategy: coasting takes priority because conversion of energy inevitably leads to losses. This applies to the D (Drive) position, the default mode, which is automatically activated upon start-up.

The coasting function, whereby drivers take their foot off the accelerator pedal early on, makes for relaxed and predictable driving. Should drivers want to decelerate more, they step on the brake pedal and activate brake energy recuperation. During the majority of everyday braking maneuvers—up to around 0.25 g of deceleration—the electric drive motor performs the braking alone, while the electric brake servo only activates the friction brakes in situations that demand more stopping power. The transition from generator-based to hydraulic braking goes almost unnoticed, thanks to highly accurate and swift brake and drive system control. These systems also make sure that the rear wheels, where brake energy recuperation takes place, always have a sufficient amount of grip.

Each ID.4 features predictive Eco Assistance as standard. It analyzes data from the navigation system and vehicle sensors to provide drivers with effective support in driving efficiently and in a relaxed way. Once the ID.4 approaches a low-speed area, such as urban environments, junctions and bends, Eco Assistance notifies drivers to take their foot off the accelerator pedal. From this moment on, the system manages optimum coasting and energy recovery without drivers having to intervene. The car responds similarly when it approaches a vehicle ahead that is travelling at a lower speed.

Drivers can use the gear selector rocker switch to change from the D position to B (Brake) at any time. In this mode, the ID.4’s drive almost always recovers energy during lifting off, but not all the way to a standstill. The limit has been set at 0.13 g—enough for clearly noticeable deceleration that won’t confuse drivers of conventional internal combustion engine vehicles: intuitive operation is one of the vehicles’ greatest strengths.

The ID.4 is Volkswagen’s first all-electric SUV and the brand’s first electric world car. It offers sporty yet comfortable driving, a spacious interior and cutting-edge controls, displays, infotainment and assist systems. At launch in the U.S., the vehicle will be offered with an 82kWh (gross) battery and a rear-mounted AC permanent-magnet synchronous motor with 201 horsepower, 228 pound-feet of torque and an EPA-estimated 250 miles of range. A powerful, electric all-wheel-drive variant with 302 hp will follow later in 2021.

Tuesday, September 15, 2020

Scania launches fully electric truck with 250 km range

Scania now launches its first fully electric truck. With a range of up to 250 km, the Scania electric truck can operate during the whole day and still return safely to its home depot for overnight charging. If there is a need for an extended range, the driver can fast charge the truck over a break or during natural stops in operation.

The truck is available with the option of either five, for a total of 165 kWh, or nine batteries totalling 300 kWh installed capacity. With five batteries the range is 130 km. The range is, of course, dependent on the weight, body type and topography.

With the combustion engine removed, space for batteries has been freed. Additional batteries are mounted on the chassis frame. The new electric motor delivers a continuous power of 230 kW or approximately 310 hp. The motor has two gears to provide high power over a wider speed span, thereby improving comfort.

One of the major benefits with an electric motor compared with combustion engine is its high controllability. In practice, the customer will experience this through faster acceleration and response from the powertrain.

Other components needed for fully electric propulsion, such as battery management units, battery cooling components, electrohydraulic steering system, electric air compressor and inverter are also mounted along the chassis frame.

Scania’s battery electric truck comes equipped with a CCS charging connector to charge from the electric grid. With 130 kW DC charging, the five battery packs will be charged in less than 55 minutes and the nine batteries in less than 100 minutes. The truck can also be charged through regenerative braking.

Scania’s new truck is equipped for a fully electric power take off. Instead of connecting auxiliaries to the interface that is usually located on the gearbox or engine, it is instead connected to an electrical connection box, called a DC box mounted on the chassis. This gives a DC link of up to 60 kW PTO for body auxiliaries such as refrigeration systems and hooklifts.The Scania electric truck is available with the L- and P-series cab, both of which are designed for urban operations. The low-floor L-series cab, particularly, is purpose-designed for congested city conditions with unrivalled visibility.

“Sustainable emission-free transport is an increasing requirement for transport companies,” says Anders Lampinen, Director, New Technologies. “Acquiring an electric truck is not just an investment in the customer’s fleet, but also in its brand and market. The electric truck enables the customer to stay ahead of the competition, learn about infrastructural challenges and start adapting for the future.”

Friday, September 4, 2020

New FIA World Rallycross Project E race series has run it's first race in Sweden

The new FIA World Rallycross Project E race series has run it's first support race in Sweden,

Ken Block's Ford Fiesta ERX won this breakthrough event at the famous Holjes rallycross circuit in front of two identical Fords.

Built by Austrian firm STARD, the cars boast three electric motors, producing 600 horsepower and 1,000 Nm of torque combined. It can go from zero to 100km/h in 1.8 seconds, according to the race team, with a top speed of 240km/h. Each axle gets its own 2-speed transmission, although only one gear is used in races. Brake and torque bias is adjustable front to rear but the STARD powertrain does not have AWD torque vectoring.

Thursday, August 13, 2020

Hyundai KONA Electric Sets Range Record of 1,026 Kilometers

Hyundai Motor successfully demonstrated its leadership in electrified mobility as three KONA Electric vehicles set a new range record.

Over the course of a three-day range mission, the pure electric subcompact SUVs each travelled 1,018.7, 1,024.1 and 1,026.0 kilometers (km), exceeding the goal of 1,000 km on a single battery charge. Each distance also represents a record in terms of 64 kWh battery capacity, as the power consumption figures of 6.28, 6.25 and 6.24 kWh per 100 km were well below the standard value of 14.7 kWh per 100 km determined by the Worldwide Harmonized Light Vehicle Test Procedure (WLTP).

“This mission has proven that our KONA Electric offers outstanding electric performance, efficiency and battery range,” said Michael Cole, President and CEO of Hyundai Motor Europe. “This lifestyleoriented vehicle will continue to offer customers a range of sophisticated technology and an attractive design of a compact SUV in addition to all the advantages of an environmentally friendly electric vehicle.”

The nearly 35-hour test took place at Lausitzring, a racetrack in northeast Germany. Dekra, a European vehicle inspection company that has operated at Lausitzring since 2017, monitored the test process and vehicles, recording 36 driver changes.

All vehicles used in the test were factory-spec and unmodified, equipped with standard Nexen N Fera SU1 low rolling resistance tires in the 215/55R17 size. Each vehicle’s air conditioning and entertainment systems remained off, with available power used solely for propulsion. Only the daytime running lights remained on to comply with the legal requirements for road traffic.

The drive teams - one from the renowned German trade magazine Auto Bild and two from Hyundai Motor Deutschland - recorded an average speed between 29 and 31 km/h to reflect typical innercity traffic speeds in Europe. On the third day, the vehicles managed to cover over 20 km with only 3 percent residual capacity. At zero percent charge, the vehicles continued to drive for several hundred meters before running out of power and coming to a stop.

“With this test, the KONAElectric confirmed what many of our customers already know: it is a reliably efficient and eco-friendly lifestyle SUV that is practical for everyday use,” said Jurgen Keller, Managing Director of Hyundai Motor Deutschland GmbH. “Customers driving the KONA Electric or other Hyundai EVs can expect to drive long distances without recharging or feeling range anxiety.”

Hyundai Motor recently revealed its plans to lead the global EV market with the launch of its new IONIQ brand dedicated to battery electric vehicles. The company will introduce three new EV models over the next four years and offer customer-centric EV experiences in line with its vision ‘Progress for Humanity’. Hyundai Motor Group, the company’s parent entity, aims to sell 1 million units of battery electric vehicles and take 10 percent market share to become a global EV leader by 2025.

Thursday, April 30, 2020

Samsung announce 900Wh/L All-Solid-State Battery Technology

Researchers from the Samsung Advanced Institute of Technology (SAIT) and the Samsung R&D Institute Japan (SRJ) presented a study on high-performance, long-lasting all-solid-state batteries to Nature Energy, one of the world’s leading scientific journals.

Compared to widely used lithium-ion batteries, which utilize liquid electrolytes, all-solid-state batteries support greater energy density, which opens the door for larger capacities, and utilize solid electrolytes, which are demonstrably safer. However, the lithium metal anodes that are frequently used in all-solid-state batteries, are prone to trigger the growth of dendrites1 which can produce undesirable side effects that reduce a battery’s lifespan and safety.

To overcome those effects, Samsung’s researchers proposed utilizing, for the first time, a silver-carbon (Ag-C) composite layer as the anode. The team found that incorporating an Ag-C layer into a prototype pouch cell enabled the battery to support a larger capacity, a longer cycle life, and enhanced its overall safety. Measuring just 5µm (micrometers) thick, the ultrathin Ag-C nanocomposite layer allowed the team to reduce anode thickness and increase energy density up to 900Wh/L. It also enabled them to make their prototype approximately 50 percent smaller by volume than a conventional lithium-ion battery.

This promising research is expected to help drive the expansion of electric vehicles (EVs). The prototype pouch cell that the team developed would enable an EV to travel up to 800km on a single charge, and features a cycle life of over 1,000 charges.

As Dongmin Im, Master at SAIT’s Next Generation Battery Lab and the leader of the project explained, “The product of this study could be a seed technology for safer, high-performance batteries of the future. Going forward, we will continue to develop and refine all-solid-state battery materials and manufacturing technologies to help take EV battery innovation to the next level.”

Thursday, April 23, 2020

Ford’s First Factory Fully Electric Dragster - Mustang Cobra Jet 1400


It won’t hurt your ears and doesn’t use a drop of fuel, but it’s projected to crush the quarter-mile in the low-8-second range at more than 170 mph. For the first time ever, Ford Performance introduces a one-off Mustang Cobra Jet factory drag racer with all-electric propulsion.

The battery-powered Mustang Cobra Jet 1400 prototype is purpose-built and projected to deliver over 1,400 horsepower and over 1,100 ft.-lbs. of instant torque to demonstrate the capabilities of an electric powertrain in one of the most demanding race environments.

“Ford has always used motorsport to demonstrate innovation,” said Dave Pericak, Global Director, Ford Icons. “Electric powertrains give us a completely new kind of performance and the all-electric Cobra Jet 1400 is one example of pushing new technology to the absolute limit. We’re excited to showcase what’s possible in an exciting year when we also have the all-electric Mustang Mach-E joining the Mustang family.”

Following the debut of the all-electric Ford Mustang Mach-E SUV – the first-ever, all-electric Mustang, the Mustang Cobra Jet 1400 prototype represents another opportunity to advance Mustang heritage and performance while simultaneously incorporating some of the most advanced technology coming to Ford’s future powertrains.

Mustang Cobra Jet 1400 also honors the original Cobra Jet that first dominated drag strips in the late 1960s and still is a major force in sportsman drag racing today.

"This project was a challenge for all of us at Ford Performance, but a challenge we loved jumping into,” said Mark Rushbrook, Global Director, Ford Performance Motorsports. “We saw the Cobra Jet 1400 project as an opportunity to start developing electric powertrains in a race car package that we already had a lot of experience with, so we had performance benchmarks we wanted to match and beat right now. This has been a fantastic project to work on, and we hope the first of many coming from our team at Ford Performance Motorsports."

Ford have yet to reveal any technical information about the electric Cobra Jet’s motors, batteries etc but we can have a few educated guesses:

  • Motors: 2x AM Racing Dual Stack 250 Motors. Most likely 2x of these motors are stacked vertically for a grand total of 4x HVH Remy 250 cores.
  • Inverters: 4x RMS PM250 DZ - 450Arms continuous, 600Arms peak, 300-800v
  • Transmission: The video sounds like a 2 speed Powerglide.
  • Rear-end: Most likely shortened Ford 9 inch diff - typical drag racing equipment.
*Note: RMS & AM Racing are now owned by Borg Warner under the new name Cascadia Motion. Remy is also owned by Borg Warner.

Ford Performance continues to test Cobra Jet 1400 ahead of its world debut later this year at a drag racing event where fans, media and competitors alike will get to meet the race car, as well as see exactly what it’s capable of up on the asphalt.

Before that, catch a sneak peek starting this Sunday, April 26 by watching MotorTrend On Demand’s “Hard Cell”, a showcase of electric vehicles pushing innovation boundaries.

To maximize the efficiency and effectiveness of the project, Ford Performance has teamed up with several capable and specialized suppliers:
  • MLe Racecars – Vehicle builder, designer, integrator and tuner
  • Watson Engineering – Chassis support and development, roll cage builder
  • AEM EV – Software and motor calibration and controls
  • Cascadia – Inverter and Motor supplier


Wednesday, April 1, 2020

Liebherr Launch First Fully Electric Concrete Mixer Truck

Liebherr and Designwerk have developed the first fully electric truck mixers with 10 and 12 m³ drums on a 5-axle chassis. The first operations are planned for our customers Holcim and KIBAG in Switzerland. This design is perfect for Switzerland, where vehicles with a gross vehicle weight of 40 tonnes are allowed to drive on 5 axles.

Concrete production in the concrete plants is clean and environmentally friendly, as the mixing plants operate electrically. This is not yet the case when transporting the concrete to the construction site: Up to now, powerful diesel engines have been the norm for such applications - combined with emissions in terms of exhaust gases and noise.

The new ETM 1005 and 1205 truck mixers on a chassis from Futuricum will change that: They transport large quantities of concrete to the construction site quietly and reliably without exhaust emissions. Since distances from the concrete plant to the construction site are relatively short compared to freight traffic, this all-electric solution is particularly well suited for this application. Moreover, the vehicles return to the concrete plant again and again, where there is a charging infrastructure for the batteries. Thanks to large accumulator capacities, charging the batteries is normally only necessary overnight. The Futuricum chassis is extremely powerful, with the equivalent of 680 HP, and can easily cope with the weight of the concrete. Energy recovery during braking or downhill driving further increases the range of the truck and reduces operating and maintenance costs.

The drum drive developed by Liebherr and ZF consists of a low-maintenance and efficient unit of electric motor and mixer gearbox. For the first time, both the truck and the truck mixer body are powered jointly by the traction battery, eliminating the need for costly power electronics components. The new Liebherr Generation 05 electrified body offers further advantages: The compact electric drive for the mixing drum is flanged directly to the drum and its high efficiency ensures that power consumption for relieving the traction battery of the Futuricum truck remains low. It also eliminates the need for any hydraulic equipment - no hose connections, no pump, and therefore no risk of leakage. Liebherr's truck mixer body boasts a low net weight combined with the best possible transport volume, a long service life thanks to its special wear-resistant steel and the ergonomic design of the operation system and access points. A platform system on both sides allows flexible positioning and attachment of accessories or attachments to suit customer requirements.

All subassemblies, chassis and mixer bodies are optimally matched to each other by Liebherr and Futuricum. The weight distribution across the axles is ideal for very good driving characteristics. A temperature management system ensures that the components are cooled or heated as required. The ETM 1005 and 1205 on Futuricum chassis are a real breakthrough when it comes to environmentally friendly concrete transport.

Sunday, March 1, 2020

Audi Claim World First with Mass Production Three Motor EV Powertrain

Audi is systematically moving forward with its e-offensive: The Audi e-tron and the Audi e-tron Sportback are becoming more agile, sharper and more dynamic as S models.

The three electric motors, two of which are located on the rear axle, together provide 370 kW of boost power and 973 Nm (717.6 lb-ft) of torque. This allows the two purely electrically driven models to accelerate to 100 km/h (62.1 mph) in 4.5 seconds. The intelligent drive control raises vehicle safety, and dynamic handling in particular, to a new level: In addition to the electric all-wheel drive, there is the electric torque vectoring with active and fully variable torque distribution on the rear axle.

The driving experience of the two prototypes for the Audi e-tron S-models cannot fail to impress with its level of dynamism, agility and traction increased once more. In the S gear, both cars go from a standstill to 100 km/h (62.1 mph) in 4.5 seconds – almost seamlessly and nearly no noise – propulsion does not end until 210 km/h (130.5 mph), limited electronically. Thanks to a powerful cooling system, the drive gives the full boost power of 370 kW and 973 Nm (717.6 lb-ft) of torque in reproducible form for eight seconds in each case. The nominal values in the D gear without boost are 320 kW and 808 Nm (596.0 lb-ft).

In terms of handling, the electric S models cannot fail to impress with their outstanding agility and traction: They can accelerate from a curve as dynamically as a sports car, their drive character is much more focused on the rear wheels and much more sporty in nature. If the ESC stabilization control is set to “Sport” and the Audi drive select dynamic handling system is set to maximum performance with “Dynamic” mode, the drive layout facilitates a high level of transverse dynamics and, on request, controlled drifts as well. The driving behavior is predictable at all times, and is characterized by an ultra-high level of safety and reliability.

The drive layout: three electric motors in the future mass production

The new Audi e-tron S models will be the first electric cars worldwide with three motors in mass production. Their drive layout is based on the concept with two different asynchronous motors (ASM); the e-tron product line was designed in modular form in line with this from the start.

The larger electric motor, which powers the rear axle in the Audi e-tron 55 models, has now been installed on the front axle in an adapted design and configured for 124 kW of power, or 150 kW in the boost.

The smaller electric motor now works in a modified form in the rear, together with a counterpart that is identical in design; together, they offer 196 kW of power, or 264 kW in the boost.

Innovation from the quattro pioneer: twin motor with electrical torque vectoring

The drive has been programmed for efficiency in everyday life; in normal driving mode, only the rear electric motors work. The front drive is unpowered but switches itself on – with the driver barely noticing – if the driver needs more power. It also switches on predictively if the grip declines. It does so when friction values are low and during rapid cornering.

The electric all-wheel drive is complemented by a further technical innovation in the form of electrical torque vectoring, which brings the advantages of the conventional sport differential into the electric era. Each one of the rear electric motors sends the drive forces directly to the wheel via a transmission; there is no longer a mechanical differential.

40 years following the launch of quattro technology, Audi is thus raising the principle of the four powered wheels to a completely new level of technology. The result: more agile driving and self-steering characteristics, and thus a higher cornering speed.

One further advantage is the traction. If, during acceleration, a rear wheel comes into contact with a road surface with a low friction value, i.e. if the road surface is covered in black ice or has a loose subsurface, the moment can be distributed precisely and quickly between the two motors. The full moment is gradually distributed to the wheel with powerful traction, while the wheel with low traction continues moving with almost no moment.

The two prototypes of the e-tron S models drive on 20-inch alloy wheels in the 5-V-spokeS design as standard. Different wheels up to 22 inches in size are available on request. To achieve an S-typical transverse dynamism, the tire widths in the sizes 20 inches, 21 inches and 22 inches have all been enlarged to 285 mm (11.2 in). Black brake calipers with a red S rhombus, with six pistons at the front in each case, grip the large brake discs (front diameter: 400 mm (15.7 in)).

A further standard feature is the sporty progressive steering – its ratio becomes more and more direct, the further the driver turns the steering wheel. The front and rear axles have been created as a five-link design. Harmonization of the elastokinematics and of the dampers has also been optimized for the S models. In order to even further reduce the rolling movements during cornering, the stabilizers on both axles have been enlarged.

Up to 150 kW: peak power, even during charging

When the driver is on the road, the electric S models can be charged with up to 150 kW of direct current power (HPC), such as in the European Ionity network. This means that charging from 5 to 80% only takes around half an hour. An important factor for this is the elaborate thermal management system with a standard heat pump, which cools and heats the battery, the interior and the electric motors with four circuits. In addition, the Audi models will also be able to charge with up to 11 kW of alternating current (AC).

The Audi e-tron Charging Service guarantees convenient access to more than 140,000 public charging points in 24 European countries on request – with nothing more than a charging card. In the first year, Audi covers the basic fee for the transit rate, which also offers access to high power charging columns.