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[Due to the increasing size of the archives, each topic page now contains only the prior 365 days of content. Access to older stories is now solely through the Monthly Archive pages or the site search function.]

MAHLE to present highly efficient 48V electric vehicle concept at IAA: MEET

August 07, 2017

MAHLE has developed a highly efficient 48-volt electric vehicle concept for urban mobility. “MEET” (MAHLE Efficient Electric Transport) will make its world debut at IAA Cars 2017 in Frankfurt/Germany in September. The modular design could be transferred to a wide range of platforms, MAHLE said.

The technical focus of MEET is on maximum energy efficiency. The meshing of different energy-saving technologies in the areas of the powertrain and thermal management increases efficiency and significantly enhances the cruising range of the vehicle—even and especially at low external temperatures.

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Mercedes-Benz 48V system debuts in new S-Class

July 19, 2017

Mercedes-Benz’ new S-Class will enter the market this month with an all-new engine range (diesel and gasoline variants of 6-cylinder in-line engines and a new V8 biturbo gasoline engine) with a series of new technologies for electrification of the powertrain (earlier post), including a 48V system (S 450 and S 500 models) and Integrated Starter Generator (ISG) for mild hybrid functionality, an electric booster compressor, and an upgraded plug-in hybrid model.

The 48 volt system establishes a third on-board power network. It fills the gap between the 12 volt network already established for decades and the high-voltage network required by electric vehicles. The latter makes special safety precautions necessary, can therefore only be used to good effect for a small number of components and is limited to driving functions. As the power requirement increases, the limited voltage of the conventional 12 volt network leads to a constant increase in current levels, and therefore to supply lines with large cross-sections. It is however not being replaced, but rather supplemented by the 48 volt network.

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New Audi A8 comes with 48V mHEV standard; plug-in e-tron model with wireless charging

July 11, 2017

In a brand event in Barcelona, Audi unveiled its fourth-generation A8 luxury sedan. The new A8 features a new design language, an innovative touchscreen operating concept and a systematically electrified drive. The Audi A8 has also been developed for highly automated driving. From 2018, Audi will gradually be taking piloted driving functions such as parking pilot, garage pilot and traffic jam pilot into production.

All five engines options—3.0 TDI and TFSI; 4.0 TDI and TFSI; and 6.0L W12— operate in conjunction with a 48V mild hybrid (mHEV) belt alternator starter (BAS) system. (Earlier post.) This mHEV technology enables the car to coast with the engine switched off, and to restart smoothly. It also has an extended start/stop function and an energy recovery output of up to 12 kW. The combined effect of these measures is to bring down the fuel consumption by as much as 0.7 liters (0.2 gallons US) per 100 kilometers (62.1 mi) in real driving conditions.

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Every Volvo car launched from 2019 to have an electrified powertrain; “the end of the solely combustion engine-powered car”

July 05, 2017

Volvo Cars announced that every Volvo it launches from 2019 on will have an electric motor, marking the historic end of cars that only have an internal combustion engine (ICE) and placing electrification at the core of its future business.

Volvo Cars will introduce a portfolio of electrified cars across its model range, embracing fully electric cars, plug in hybrid cars and mild hybrid cars. The announcement represents one of the most wide-reaching moves by any car maker to embrace electrification. The company said that its decision highlights how—more than a century after the invention of the internal combustion engine—electrification is paving the way for a new chapter in automotive history.

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Audi A8 fully active electromechanical suspension powered by 48V electrical system; predictive adjustment using front camera

June 22, 2017

The new Audi A8 will feature a fully active, electromechanical suspension system which drives each wheel individually and adapts to the prevailing road conditions. Each wheel has an electric motor which is powered by the A8’s 48-volt electrical system—used for the first time as the main electrical system. (The Audi SQ7 TDI introduced in 2016 offered a 48V subsystem as well as a 12V system for the alternator. Earlier post. The new A8 also features a 48V mild hybrid capability (mHEV).)

Additional components include gears, a rotary tube together with internal titanium torsion bar and a lever which exerts up to 1,100 Nm (811.3 lb-ft) on the suspension via a coupling rod. The new Audi A8 makes its world debut at the Audi Summit in Barcelona on 11 July.

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Audi’s new 3.0L diesel; ready for 48V mild hybrid system

June 05, 2017

Audi engineers have intensively further developed the new 3.0 TDI diesel engine for the European market. In the new Audi A5 and Q5 models, the V6 diesel outputs 210 kW (286 hp) as well as 620 N·m (457lb-ft) of torque (this engine version is not yet for sale. Since it still lacks an overall type approval, it is not subject to Directive 1999/94/EC), the latter from 1,500 to 3,000 revolutions per minute.

The six-cylinder engine has a displacement of 2,967 cm3 (bore x stroke 83.0 x 91.4 millimeters (3.3 x 3.6 in)). As with all V engines from Audi, its two banks lie at a 90-degree angle from one another. Inside the cylinder crankcase, made of high-strength cast iron with vermicular graphite, a balancer shaft rotates in order to reduce engine vibrations and to improve acoustics. The ignition pressure reaches the 200 bar mark over wide areas of the characteristic map.

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Audi’s mild-hybrid systems: 12V for 4-cylinders, 48V for 6- and 8-cylinders

June 02, 2017

Audi will begin introducing new mild-hybrid drive vehicles (MHEVs) this year. The next generation of luxury sedans, the Audi A8, will have 48V MHEV systems regardless of engine type.

Audi offers the MHEV drives in two variants. For the four-cylinder engines they are based on the familiar 12-volt electrical system. The six-cylinder and eight-cylinder engines, as well as the W12 cylinder units, will receive a new 48-volt system generally serving as the main vehicle electric system. In particular, this technology offers many ways for making driving more efficient, sportier and more comfortable in the future.

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CPT, TU Wien study finds 48V mild diesel hybrid cuts engine-out NOx 9%, 4.5% fuel economy improvement

May 31, 2017

A joint study by Controlled Power Technologies (CPT) and Austria’s Technische Universität Wien (TU Wien) into 48V diesel mild hybrid technology verified a 9% reduction of NOxin raw engine-out emissions, while retaining the fuel economy and CO2 benefits of diesel engine technology.

The cost effectiveness of this approach is further underscored by its impact on lean NOx trap (LNT) and selective catalytic reduction (SCR) aftertreatment systems, which have less raw NOx emissions to process, potentially allowing for a reduction in exhaust system cost and complexity, and a longer service life.

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Volkswagen apprentices unveil 48V hybrid Golf GTI, enhanced Golf GTE PHEV at at Wörthersee meeting

May 25, 2017

At Volkswagen’s Wörthersee meeting this week, 13 apprentices from Volkswagen Wolfsburg and Sitech are presenting the first GTI that also features electric propulsion: the Golf GTI First Decade. A different team of 14 apprentices from Volkswagen Sachsen are also unveiling a Wörthersee show car, the Golf GTE Variant impulsE—a show version of the production plug-in hybrid featuring enhanced all-electric range.

The Golf GTI First Decade combines a 410 PS (300 kW) gasoline engine driving the front wheels with a 48-volt electric motor that drives the rear wheels with a maximum output of 12 kW. The two drive systems can be used separately but also work hand-in-hand when required.

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Daimler lays foundation for its second battery factory; €500M investment for premium eBattery plant

May 22, 2017

Daimler has laid the foundation for its second battery factory. At its wholly-owned subsidiary ACCUMOTIVE in Kamenz, the second factory for lithium-ion batteries is being built with an investment of around €500 million (US$562 million).

Daimler is investing an overall amount of around €1 billion () in a global production for batteries. “With the second battery plant in Kamenz, we are giving the initial start for the development of the first premium eBattery factory. The local production of batteries is an important success factor in our electric offensive and a crucial element in order to flexibly and efficiently serve the global demand for electric vehicles. This makes our production network very well positioned for future mobility,” said Markus Schäfer, Member of the Divisional Board of Mercedes-Benz Cars, Production and Supply Chain.

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Hyundai Mobis develops compact, integrated 48V mild hybrid system

April 27, 2017

Automotive supplier Hyundai Mobis has developed the core technologies of a compact, integrated 48V mild hybrid system. Hyundai Mobis developed the “converter integrated 48V battery system” on its own and it is making the final preparations for mass-production scheduled for next year.

Hyundai Mobis integrated the converter and the battery system—formerly applied separately—into one system. The company not only reduced the weight, volume and cost of the system but also improved cooling efficiency.

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Continental showcases “Super Clean Electrified” connected, optimized 48V mild hybrid diesel; post-Eu6d

April 25, 2017

At the 38th International Vienna Motor Symposium this week, Continental is showcasing a 48-volt hybrid diesel vehicle which meets very stringent RDE (real driving emissions) limits on CO2 and NOx. The Continental Super-Clean Electrified Diesel combines electrification-based engine optimization and an electrically heated catalyst integrated in the exhaust aftertreatment system to achieve a 60% reduction in real-world NONOxx emissions and a simultaneous 2% reduction in CO2 emissions measured against the baseline Euro 6b vehicle.

The first 48-volt diesel hybrid has already gone into production in Europe, and a second production launch is already in the pipeline for 2017.

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New Mercedes-Benz S-Class to offer upgraded PHEV, new 48V mild hybrid models; advances in autonomy

April 19, 2017

Mercedes-Benz chose Auto Shanghai 2017 as the venue for the world première of the new S-Class. Among the highlights is new efficient engine range and a series of new technologies for electrification of the powertrain. Several new engines are planned for the new S-Class: in-line six cylinder diesel and gasoline engines as well as a new V-8 biturbo gasoline engine.

In addition, Mercedes-Benz plans a plug-in hybrid with an electric range of about 50 kilometers (31 miles). Technologies such as the 48-volt Integrated Starter Alternator and the electric booster compressor celebrate their world première in the lineup as well. The market launch of the new S-Class starts in the European markets in July.

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A123: Increasing 48V battery power up to ~25 kW enables advanced mild hybrid capabilities with greater fuel savings

April 06, 2017

In a paper presented at SAE WCX 2017 this week in Detroit, engineers at Li-ion battery maker A123 Systems conclude that 48V battery packs with strong power (up to ~25 kW) and HEV-level energy capabilities (<200Wh for most scenarios) are needed to enable advanced mild hybird (MHEV) capabilities, with optimal power-to-energy ratios between 30 and 160.

Improving battery power to such as level would further enable hybridization to near-HEV levels as well as engine downsizing, thereby enabling fuel economy improvements beyond the current 10-15% MHEV limit. Additionally, new electrified features could be added, such as electric turbo/supercharging, electric traction, electric power steering, electric suspension and electric air conditioning. To address these needs, the A123 team presented a high-power, lithium-iron-phosphate chemistry with excellent rate capabilities.

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ICCT: incremental technology can cut vehicle CO2 by half and increase fuel economy >60% through 2030 with ~5% increase in price

March 22, 2017

With the EPA re-opening its Mid-Term Review of GHG standards for 2022-2025 for light-duty vehicles (earlier post), and with NHTSA yet to weigh in on its Mid-Term evaluation of fuel economy standards for the same period, a team from the International Council on Clean Transportation (ICCT) has published a report analyzing emerging vehicle efficiency technologies; their ability to achieve lower emission levels; and their costs in the 2025–2030 timeframe.

Starting from a baseline 26 mpg (9.04 l/100 km) in 2016, the The ICCT team assessed increased consumer label fuel economy (as opposed to the regulatory test fuel economy) to 35 mpg (6.71 l/100 km) in 2025 and to 42–46 mpg (5.6-5.11 l/100 km) (under three scenarios) by 2030. These fuel economy levels are achieved based on a sustained 4%–6% annual reduction of fuel use per mile with incremental technology additions that do not compromise vehicle size or utility at an incremental cost of $800–$1,300 from 2025 to 2030. The resulting trajectory would reduce CO2 emissions by half and increase fuel economy by more than 60% from 2016 through 2030. Based on a detailed analysis of the efficiency technologies used to achieve these lower CO2 emission levels, the ICCT study concludes that vehicle prices would increase by about 5% by 2030.

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Audi unveils Q8 sport concept with 48V mild hybrid system (mHEV); drive system coming to “many” Audi models

March 07, 2017

At the 2017 Geneva International Motor Show, Audi is presenting the Audi Q8 sport concept, a new performance-oriented take on the Q8 concept study introduced at the 2017 Detroit Motor Show. Equipped with a 3.0 TFSI six-cylinder engine featuring a 48V mild hybrid system (mHEV) and an electric compressor, the SUV delivers a total 350 kW (476 hp) output and 700 N·m (516.3 lb-ft) of torque, and sprints from 0 - 100 km/h (0 ‑ 62.1 mph) in 4.7 seconds. Top speed is 275 km/h (170.9 mph). Its range of more than 1,200 kilometers (745.6 miles) ensures it is also suitable for long journeys.

Compared with a model equipped with a regular TFSI six-cylinder engine without the mHEV system, the Q8 sport concept with its 20 kW greater performance consumes around one liter less fuel per 100 km —corresponding to a reduction in CO2 emissions of 25 g/km (40.2 g/mi).

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Volvo Cars to introduce 3-cylinder FWD PHEV in 2018, BEVs & 48V mild hybrid in 2019; Modular Electrification Platform

February 09, 2017

Volvo Cars will introduce a front-wheel drive (FWD), 3-cylinder engine variant of its Twin Engine plug-in hybrid electric vehicle system in 2018, followed by its first production battery-electric vehicles and a new 48V mild hybrid system in 2019, according to Mats Anderson, Senior Director of Electric Propulsion Systems. Anderson was speaking at the SAE 2017 Hybrid and Electric Vehicle Technologies Symposium in San Diego.

Currently in its line-up, Volvo offers the T8 Twin Engine all-wheel drive (AWD) system, currently on the XC 90 T8 Drive-E Twin Engine (earlier post). The 4-cylinder engine T8 AWD is intended to match the performance of 6- and 8-cylinder engined competitors, said Anderson. The new Twin Engine FWD platform will use a 3-cylinder engine, with the system matching the performance of 4- and 6-cylinder engined competitors.

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Torotrak shifting strategic focus in response to electrification trend; focus on KERS, away from V-Charge

January 31, 2017

UK-based Torotrak, a developer and supplier of emissions reduction and fuel efficiency technology for vehicles, is refocusing its strategy based on its understanding of how the priorities for many players in the European passenger car market—Torotrak’s customers—have profoundly changed in recent months.

The Torotrak Group has three main product lines: Flybrid flywheel-based kinetic energy recovery (KERS); Torotrak variable drive transmissions for use in powertrains and auxiliary devices; and V-Charge, a supercharging product containing Torotrak variable drive technology. Torotrak has been in commercial discussions with passenger car Tier 1s and OEMs as they seek to understand the full capability of V-Charge—Torotrak’s variable-drive mechanical supercharger that can enable ambitious engine downsizing (earlier post).

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Continental producing 48V hybrid drives at Nuremberg plant; in use in Renault diesels by end of year

December 16, 2016

Continental’s new 48V hybrid drives are making their first appearance in series production vehicles. (Earlier post.) Manufactured at Continental’s Nuremberg plant, these first series-production 48V hybrid drives will be applied in “Hybrid Assist” diesel variants of both the new Renault Scénic and Grand Scénic models from the end of this year.

Just three years after the start of the project, the Nuremberg location developed a modular manufacturing concept that it uses to manufacture efficiently and in line with the cost structures of the volume market. To do so, the supplier invested around €15 million (US$15.7 million) in new production equipment. Using the currently installed equipment, up to 200,000 vehicles can be furnished with 48-volt drives.

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Honeywell Transportation Systems Forecast: turbocharged vehicles to account for 48% of annual global sales by 2021; electric boosting emerges

December 09, 2016

Honeywell’s Transportation Systems Forecast projects that turbocharged vehicles will acount for 48% of annual global sales by 2021, up 9 percentage points from 2016. This annual sales estimate, combining both passenger and commercial vehicles, would add more than 232 million turbocharged vehicles globally between 2017 and 2021—an increase of 35% from today.

This year’s forecast recognizes an industry trend for slightly bigger engine sizes in Europe and China as automakers adapt powertrain strategies to tackle updated emissions regulations developed for real-world driving conditions. In these regions, a typical powertrain is a three- or four-cylinder engine with a displacement size between 1.2 liters and 1.7 liters. By rightsizing engines with available technologies, automakers are able to continue applying the benefits of smaller turbocharged engines while fine-tuning powertrain systems to further optimize fuel economy, emissions and performance.

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Some Volkswagen strategists see battery-electric, diesel cost lines crossing by 2023-2025; TRANSFORM 2025+

November 22, 2016

The increasing stringency of global emissions standards, both current and projected, is driving up the cost for internal combustion engines to meet those standards, although numerous technology pathways exist. (Earlier post.)

In a conversation with Green Car Congress at AutoMobility LA last week, Dr. Matthias Erb, Executive Vice President of the NA Engineering and Planning Center, Volkswagen Group of America, said that, as a result of those pressures, some strategists in the Volkswagen Group project that the cost lines between battery-electric vehicles and diesel will cross within the coming decade.

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ICCT: 2025 target average of 70 g/km CO2 for new cars in EU feasible and economical; more so with electric drive

A 2025 CO2 target of an average 70 g/km for new cars in the EU could be met with very little electrification and with an average payback period of less than 4 years, according to a new study by the International Council on Clean Transportation (ICCT). However, transitioning soon to electric drive could lower manufacturers’ compliance costs by as much as €500 (US$532) per vehicle in 2025.

Under current European Union regulations, average new car CO2 emissions must decrease from the present 120 grams per kilometer (g/km) to 95 g/km by 2021. Although no further reductions are presently mandated, new targets for 2025 and 2030 are under discussion in Brussels. In 2013 the European Parliament recommended an “indicative range” of 68–78 g/km for 2025, while holding out the possibility that even lower targets should be considered if justified.

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ICCT-led analysis of turbocharged, downsized engine tech finds lower costs and greater benefits than 2012 EPA/NHTSA analysis; 48V, e-boost, Miller

October 31, 2016

A new white paper published by the International Council on Clean Transportation (ICCT), in collaboration with Eaton, Ricardo, JCI, BorgWarner, Honeywell, and the ITB Group, analyzes current turbocharged, downsized gasoline engine technology developments and trends.

The assessment, which relies on data from publicly available sources and data and information from the participating automotive suppliers, provides an update to the technology assessments performed by US Environmental Protection Agency (EPA) and National Highway Traffic Safety Administration (NHTSA) to inform the 2017–2025 fuel economy and GHG rule.

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Mercedes-Benz powering ahead with €3B strategic engine initiative; increasing electrification, 48V; diesel and gasoline; cylinder deactivation

October 30, 2016

Following the launch of the new Mercedes-Benz four-cylinder OM 654 diesel engine in spring 2016 in the E 220d (earlier post), 2017 will see the addition of four more members to the all-new family of engines: six-cylinder in-line engines in both diesel (OM 656) and gasoline (M 256) versions; a new four-cylinder gasoline engine (M 264); and a new biturbo V8 (M 176) with cylinder deactivation. Mercedes-Benz is investing a total of around €3 billion (US$3.3 billion) in its strategic engine initiative.

The scaling of state-of-the-art technologies and electrification options from 12 V to 48 V to high-voltage plug-in applications makes it possible to configure the appropriate powertrain for every vehicle. There will be world premieres for new advanced technologies, such as the Integrated Starter-Alternator (ISG); the 48 V electrical system; and the electric auxiliary compressor (eZV).

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Daimler subsidiary ACCUMOTIVE begins construction of second Li-ion factory; batteries for 1st EQ model, 48V systems

October 24, 2016

Daimler subsidiary ACCUMOTIVE has begun construction of a second Li-ion battery factory at its site in Kamenz. With an investment of about €500 million (US$545 million), the site in Kamenz will be one of the biggest and most modern battery factories in Europe.

The new production facility is planned to start operations in the middle of 2018. The area of about 20 hectares is located in immediate proximity of the existing battery factory in Kamenz, about 50 kilometers from Dresden. With the construction of the second facility, the production and logistics area will be quadrupled to about 80,000 square meters. The workforce will double by the end of this decade.

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Continental puts first 48V hybrid assist system into production with Renault diesels

October 21, 2016

From the end of 2016, diesel variants of the Renault Scénic and Grand Scénic models will be equipped with Continental’s 48-volt hybrid drive—the first application of the 48V “Hybrid Assist” in production vehicles.

The first production solution combines an efficient, water-cooled induction motor with an integrated inverter. The electric motor transmits power via a belt drive directly to the crankshaft of the combustion engine—an arrangement referred to as “P0 topology.” Further production ramp-ups are soon to be set in motion on the basis of a modular system for 48-volt drives.

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BMW plans hydrogen fuel cell offering “early in next decade”

October 13, 2016

Speaking on the future of powertrains at the Aachen Colloquium, Klaus Fröhlich, Member of the Board of Management at BMW AG, Development, said that BMW will enter the fuel cell market early in the next decade, starting with very small production runs.

Fröhlich noted that at least until 2025 costs will remain too high and the hydrogen infrastructure too sparse to allow broad-based market penetration. However, he added, “by the time the fundamentals are in place, the BMW Group will also have marketable products ready that are attractive to customers.

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Testing confirms Torotrak V-Charge variable drive mechanical supercharger enables more ambitious downsizing; 1.0L demo at Aachen

October 10, 2016

Independent on-engine test results have verified the simulation predictions that a Torotrak V-Charge variable drive mechanical supercharger enables more ambitious levels of engine downsizing. Compared to a current 1.5L GTDI engine producing 240 N·m torque, a 1.0L GTDI engine of the same Ford EcoBoost family outperformed the 1.5L version when fitted with a V-Charge unit.

The tests were carried out by the University of Bath Powertrain and Vehicle Research Centre (PVRC), using a Ford 1.0L EcoBoost engine, in a part-government funded program. The 1.0L engine with V-Charge delivered 250 N·m (184 lb-ft) torque, corresponding to a BMEP (Brake Mean Effective Pressure) of 31 bar.

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CPT showcases full range of 48V systems at Aachen

Controlled Power Technologies (CPT) is showcasing its range of 48V systems at the Aachen Colloquium this week: its Cobra electric compressor, SpeedStart belt-integrated starter-generator, SpeedTorq drivetrain motor-generator, and TIGERS exhaust energy recovery system.

Two of the technologies feature in the ADEPT (advanced diesel-electric powertrain) demonstrator vehicle (in which program CPT was a consortium partner), which makes its first appearance in Germany following its debut at the recent Cenex Low Carbon Vehicle event in the UK. (Earlier post.)

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Schaeffler presents high-performance 48V concept mild hybrid vehicle at Aachen

As part of the 25th Aachen Colloquium this week in Germany, Schaeffler is unveiling the “Schaeffler High Performance 48 Volt” concept vehicle. The 48V mild hybrid, based on an Audi TT, features an electric rear axle equipped with a 20 kW motor complementing the internal combustion engine which drives the front axle (P4 architecture). In the demonstrator vehicle, the engine is connected to a 48V belt-driven starter generator.

The Schaeffler electric axle produces a starting torque of up to 2,000 N·m. This provides purely electric driving up to 35 km/h (21.75 mph) as well as active sailing at speeds of more than 70 km/h (43.5 mph).

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Valeo introduces new 48V e4Sport hybrid system; all-wheel drive

October 04, 2016

At the Paris Motor Show, Valeo introduced another 48V hybrid system, the 48V e4Sport. The new system, which can be applied across all vehicle segments, to both gasoline and diesel engine models, recovers a maximum amount of braking energy and stores it in a 48V battery for various uses, such as increasing engine torque, via the starter-generator, or maximizing engine power during acceleration and boost phases, using the electric supercharger.

The system also supports driving in all-electric mode and, when on low-grip surfaces, improving performance by connecting the rear axle to the 48V eRAD electric rear axle drive, effectively transforming the vehicle into a four-wheel drive.

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Final testing confirms ADEPT 48V diesel hybrid reduces fuel consumption 10-12% at low incremental cost

September 13, 2016

The three-year ADEPT (advanced diesel-electric powertrain) project (earlier post) in the UK set the target of developing and validating a range of advanced mild hybrid technologies with 48V “intelligent electrification” utilizing an advanced lead carbon battery. These have been applied to a Ford Focus project demonstrator which, for the first time, will be made available for public ride and drive evaluation by delegates at the Low Carbon Vehicle event (LCV2016), at Millbrook, UK.

Final testing has confirmed ADEPT’s key achievement of 10-12% reduction in fuel consumption (NEDC)—equivalent to sub-80g/km of CO2 emissions. According to the latest updated analysis of the potential cost of production implementation of ADEPT—conducted independently by Ricardo—the system would represent an incremental cost of in the region of €60 per gram/km of CO2 reduction. This is a result that makes the ADEPT powertrain architecture very competitive with other fuel economy solutions such as full hybridization, where costs of implementation can be significantly higher.

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Audi developing electromechanical rotary dampers; potential for energy recuperation from suspension; 48V

August 10, 2016

Audi is developing a prototype electromechanical rotary dampening system called “eROT,” in which electromechanical rotary dampers replace the hydraulic dampers used today for an even more comfortable ride. The eROT system also offers the potential for energy recuperation from the suspension.

Every pothole, bump, and curve in the road induces kinetic energy during compression and rebound of the car’s suspension, observes Dr.-Ing. Stefan Knirsch, Board Member for Technical Development at AUDI AG. “Today’s dampers absorb this energy, which is lost in the form of heat. With the new electromechanical damper system in the 48-volt electrical system, we put this energy to use. It also presents us and our customers with entirely new possibilities for adjusting the suspension.

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