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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.]

Audi highlights its range of electrification efforts; Q7 diesel PHEV, A7 fuel cell PHEV, BEV, 48V and more; 750 Wh/l by 2025

November 17, 2015

Audi presented a range of its ongoing work on electromobility and efficiency—from fuels and systems to full vehicles—under the “Future Performance Days 2015” banner.

On the full vehicle side, Audi put forward the Audi Q7 e-tron 3.0 TDI quattro plug-in hybrid (earlier post); the Audi A7 h-tron quattro fuel cell vehicle (earlier post); the Audi e-tron quattro concept battery-electric SUV (earlier post); the Audi TT clubsport turbo concept (earlier post); the Audi RS 5 TDI competition concept (earlier post); and the Audi R18 e-tron quattro (earlier post). On the systems and fuels side, Audi discussed battery technology; wireless charging; 48 V electrification (earlier post); Audi fuel cell technology; and Audi e-fuels (earlier post).

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Volkswagen: reorienting diesel strategy, new Modular Electric Toolkit, MQB push on PHEVs, electric Phaeton

October 13, 2015

The newly-formed Volkswagen Brand Board of Management has made a number of major strategic product decisions, including a reorientation of the diesel strategy to use the most advanced emission aftertreatment technologies; the development of a standardized electric architecture (Modular Electric Toolkit, MEB) for passenger cars and light commercial vehicles; and an electric next-generation Phaeton.

Further, Volkswagen will accelerate its efficiency program and cut spending by some €1 billion per year.

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Schaeffler preparing 48V mild hybrid Audi TT for road testing

September 30, 2015

Schaeffler has been testing and demonstrating the performance capabilities of 48 volt hybridization in a range of concept vehicles including the“Gasoline Technology Car” (GTC), co-developed with Ford and Continental and the “Schaeffler Efficient Future Mobility North America” vehicle, as launched at the 2015 Detroit Motor Show (NAIAS) (earlier post). Schaeffler is now applying 48V hybridization to an Audi TT.

The drive for the “Schaeffler System 48 V” is based around an electrified rear axle which complements the front-wheel drive internal combustion engine. An additional belt-driven starter generator is connected to the engine which also operates at 48 V. The 48 V on-board electric subsystem uses a lithium-ion battery as its energy store. It is connected via a voltage transformer to the 12 V on-board electric system which powers all the different electrical components in the vehicle, from headlights to seat adjusters.

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JAC and Ricardo develop production version of HyBoost concept; seeking 30% boost in fuel economy with same performance

Anhui Jianghuai Automobile Group Co Ltd (JAC) and Ricardo are collaborating on a project to develop the Ricardo HyBoost concept (earlier post)—a combination of low-cost technologies to deliver improved performance and fuel economy which featured recently in the Ricardo Centenary celebrations —into volume production on a JAC vehicle.

The Ricardo HyBoost concept is based on a downsized, highly boosted turbocharged direct injection gasoline (TDGI) engine giving improved fuel economy at low cost, linked to a 48V electrical architecture including a belt starter generator (BSG), DC-DC converter and a lithium-ion battery for energy storage.

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Jaguar Land Rover showcases MHEV, PHEV and BEV Concept_e demonstrators; electric Drive Module

September 09, 2015

At the CENEX Low Carbon Vehicle event in the UK, Jaguar Land Rover (JLR) is showcasing three Concept_e research demonstrators—a mild hybrid, plug-in hybrid, and battery-electric vehicle—including a new novel high performance, modular electric drive module (eDM) developed in-house by Jaguar Land Rover.

These are capable of producing twice the power and torque of any electric motor-generator currently in production, JLR said, and can be inserted between any engine and transmission to create MHEV or PHEV, or used alone for a BEV.

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Bosch 48V mild hybrid system to be production-ready by 2017; Gen 2 prototype integrated in transmission for all-electric driving

September 04, 2015

Bosch is developing a 48V entry-level hybrid system that will be production-ready by 2017. “The boost recuperation system is the hybrid for everyone,” says Dr. Rolf Bulander, member of the board of management of Robert Bosch GmbH and chairman of the Mobility Solutions business sector.

Bosch says that the low-cost system, which enables start-stop functionality and braking energy recuperation, will deliver about a 15% improvement in fuel consumption, not only in controlled tests, but also in everyday driving situations. An electric boost feature also enables more dynamic acceleration; the motor generator provides the combustion engine with an additional 150 N·m of support during acceleration.

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Aeristech launches new 48V electric supercharger

July 31, 2015

UK-based Aeristech has introduced a new 48V electric supercharger capable of continuous operation at high boost levels. Independently validated by Ricardo and MAHLE Powertrain UK, the technology provides greater efficiency and easier packaging than a mechanical supercharger or a two-stage turbocharger.

Aeristech said it overcame the thermal management issues that can restrict other electric boosting devices currently available on the market to only transient operation by using permanent magnet motor technology in place of the more usual switched reluctance type. This has been made cost-effective by developing a patented control and switching technology that enables the use of many cost-competitive components.

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Frost & Sullivan projects Volkswagen Group to be the leader in 48V systems over next 10 years

June 15, 2015

In a new report on the prospects for 48V automotive systems (earlier post), consultancy Frost & Sullivan forecasts that the Volkswagen Group will lead in this area primarily because of Audi’s 48V offering (earlier post). The consultancy projects that by 2025, Volkswagen Group will have 48V volumes in excess of 1 million systems in North America and Europe combined, far exceeding its competition.

The report, “The 48V Power-net Market in Europe and North America”, projects that by 2017, Audi and PSA will be the front-runners in Europe, while in North America, the major push is expected by the German OEMs.

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Audi power-dense 2.5L TFSI engine with electric biturbo delivers 591 hp from 2,480 cc; 48V subsystem for the turbo

May 09, 2015

At the Wörthersee festival, Audi is showcasing the Audi TT clubsport turbo technology concept equipped with a new 2.5 TFSI gasoline engine with an electric biturbo (earlier post) that delivers 441 kW (591 hp) and 650 N·m (479.4 lb-ft), with acceleration from 0 to 100 km/h (62.1 mph) in 3.6 seconds. Peak torque is available from 3,000 to 7,000 rpm. Power is transferred via a manual six-speed transmission.

While production car engines with this level of output are available from a number of mainstream OEMs, the displacement of the Audi engine is about half or less that of the others, resulting in a very power- and torque-dense unit. The five-cylinder, 2,480 cc engine produces 178 kW (239 hp) and 262 N·m (193 lb-ft) per liter of displacement. By comparison:

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Hyundai showcasing new Tucson 48V Hybrid Concept and diesel Plug-in-Hybrid Concept at Geneva

March 08, 2015

Hyundai Motor is showcasing a range of innovative fuel efficiency and connectivity technologies at the 2015 Geneva Motor Show, among them a 48V Hybrid concept and a plug-in hybrid vehicle concept, both based on the all new Tucson platform.

The 48V Hybrid combines a 2.0-liter diesel model with 134 hp (100 kW) and a six-speed manual transmission along with a 14 hp (10 kW) electric motor; combined system performance is 148 hp (110 kW) and 413 N·m (305 lb-ft) of torque. This boosts system power by 10% while emitting only 109 g/km CO2. Compared to a full hybrid system, the 48V system delivers similar efficiency, for only a quarter of the cost.

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ALABC showcased three 48V hybrid demonstrators at AABC featuring advanced lead-carbon batteries

February 10, 2015

The Advanced Lead Acid Battery Consortium (ALABC) last month showcased three hybrid electric concept vehicles resulting from its R&D program that demonstrate the real-world potential of lead-carbon batteries in 48V architectures. The cars, two of which were produced in association with major OEMs (Ford and Hyundai/Kia), exhibit substantial environmental and fuel-efficient benefits through low-cost hybridization. The vehicles were part of the ALABC display at the Advanced Automotive Battery Conference (AABC Europe 2015) held at the Rheingoldhalle in Mainz, Germany.

All three vehicles feature advanced lead-carbon batteries, also known as carbon-enhanced lead-acid batteries. The batteries, Exide’s spiral-wound Orbital AGM and East Penn Manufacturing’s UltraBattery (the latest model of which was also on display at the ALABC stand), are some of the most effective lead-carbon designs for 48V hybrid electrification, ALABC said.

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Calls for an international 48V electrical standard for vehicles; looming WLTP implementation

December 01, 2014

At the 2nd International Conference Automotive 48 V Power Supply Systems, held last week in Düsseldorf, Germany, Controlled Power Technologies (CPT), a major sponsor of the event, together with leading car makers and Tier 1 suppliers, argued the need for an internationally agreed 48V electrical standard. Such a standard will be necessary for the global automotive industry to achieve the economies of scale demanded by original equipment manufacturers.

CPT, together with other sponsors of the event, including AVL and Ricardo, is in the vanguard of 48V mild hybrid developments intended to address the ever-tightening European CO2 regulations and potentially a new and more aggressive test cycle—i.e., the Worldwide harmonized Light vehicles Test Procedures (WLTP).

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EALABC paper outlines approach to 48V hybrid systems with advanced lead-carbon batteries

November 19, 2014

The European Advanced Lead-Acid Battery Consortium (EALABC) is delivering a paper this week outlining the consortium’s approach to 48V hybridization at the 2nd International Conference on Advanced Automotive 48V Power Supply Systems in Düsseldorf. The EALABC focus is on the environmental and cost benefits of current and future advanced lead-carbon batteries for 48V hybrid vehicles.

The state-of-charge (SoC) of current lead-carbon batteries is typically maintained at between 30 and 50%, with the voltage and amperage meeting VDA requirements by not exceeding 54V at 150A when recovering joules of energy from vehicle deceleration (kinetic energy recovery) and exhaust gas energy recuperation (thermal energy recovery), also dropping not less than 38V at 180A when discharging energy for engine starting and torque assist. Advanced lead-carbon batteries for vehicles currently under development will be capable of operating in the 30 to 70% SoC range at 12.5kW.

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