• Into the DEAP
      The Distributed Electrical Aerospace Propulsion project looks toward a future optimized integrated propulsion system that will allow cleaner, quieter, and more efficient performance incorporated into a radically innovative airframe that will feature enclosed electrically powered fans.
  • Inside the cell walls
    The high cost of lithium-ion batteries is a prison that has largely kept electric vehicles off the street; the keys to their release are more effective—but not more expensive—cell chemistries.
    • Fuel cells for auxiliary power
      OEM and supplier researchers explore the benefits of utilizing solid-oxide fuel-cell APUs to help meet heavy-duty truck anti-idling requirements.
    • Safer EV batteries could enter the crush zone
      ARPA-e targets "robust" batteries that not only bear loads but also absorb crash-impact energy to save weight.
    • BMW i3 was born electric
      The carbon-fiber-bodied city car is the German automaker's first series-production entry into the electric-vehicle space.
    • High temperatures narrow material choices for electrified vehicles
      One of the biggest challenges confronting electric and hybrid-electric vehicle designers today is how to manage the high temperatures stemming from the electrical losses associated with high-power electronics.
    • Lithium-ion refinement
      Even as high-profile fires create concern, battery and car makers accelerate their move toward lithium-ion technology with advances in cost, performance, and safety.
    • NASA's quest for maximum efficiency
      As part of its hybrid body wing aircraft with turboelectric distributed propulsion system, NASA has proposed to use a superconducting and cryogenic electrical system to connect the electrical output of the generators to the motors.
    • Electrifying, fast, quiet-and usually dirty
      IAV developed the e-Crossbike to prove the potential of electric drive in one of the most demanding vehicle environments-motocross racing. Here's how the engineering team did it.
    • Next-gen eAssist aims at cost reduction
      Lower cost, lighter weight, more refinement-Chief Engineer Steve Poulos gives a glimpse of GM's third-generation eAssist mild-hybrid system now under development for 2015.
    • Fuel cells return to focus
      While fuel-cell vehicles haven't been in the spotlight in recent years compared with hybrids and EVs, hydrogen fuel cell technology is regaining momentum as OEMs move to reduce their CO2 footprints. But cost and infrastructure challenges remain.
    • The case for class 8 hybrids
      Hybrid technology may not be the best solution for all heavy-truck applications, but a Caron Engineering expert explains how it can still benefit Class 8 vehicles.
    • In hybrid systems, mild beats wild
      The coming wave of 48-v mild hybrids aim for maximum benefit at minimal cost.
    • No more molecules!
      Companies continue to invest in new chemistries for EV batteries, but at least one company in the battery industry thinks it's time to halt the unending search for new chemical formulations and focus on driving down processing costs.
    • When fuel cells fly
      Emerging hydrogen and fuel-cell-based technologies are being developed for the future replacement of onboard electrical systems in more-electric or all-electric aircraft.
    • Motor controls spin forward
      Improved power handling and software advances make electrified powertrains more competitive.
    • Multiple controllers adds to EV complexity
      Model-based design has revolutionized the way products are developed, with design shifting from parts to the whole.
    • RAV4 EV races to market
      After just a 22-month development program, engineers from Toyota and Tesla produce an all-electric version of the popular SUV.
    • Integrating in-wheel motors
      Four publicly disclosed vehicles are examined for which Protean Electric has taken a leading role in converting into electric or hybrid prototypes.
    • Argonne heats up Li-ion battery research
      The U.S. Department of Energy lab near Chicago is using federal stimulus money to dive deeper into lithium battery research.
    • Lithium-ion battery industry moves forward
      From technology advances to manufacturing capacity expansions, the foundation of the lithium-ion battery industry is becoming stronger and more viable.
    • Putting electrification to work
      For fleets, going green is a high priority-but making green is an even higher one.
    • A move to 'more electric' engines
      Researchers detail a motor control design for the fuel system of a more electric aero engine, focusing on the necessary safety and reliability aspects.
    • 2012-13 Hybrid Vehicles Guide
      A quick reference to the latest production HEVs and their key specifications.
    • Bang for the buck
      The best technology solutions for electrified vehicles are the ones that deliver ∼80% of the performance of 'ideal' systems, at ∼60% of their cost.
    • Rise of the P2 machines
      Newcomers to hybrid-vehicle development are bypassing the Prius-proven powersplit system for lower-cost and moderately less capable single-motor solutions.
    • Rethinking battery and e-motor materials
      Experts reveal efforts to find lower cost, more strategically stable solutions that can match or improve system performance.
    • The buzz about electric aircraft
      Emissions limits force the aviation industry to study hybrid and battery-electric propulsion systems.
    • Car-to-X marks the secure beamforming spot
      Intelligent networking of cars and infrastructure promises a future of enhanced active safety and traffic efficiency, though as an open and decentralized system, car-to-X is exposed to various attacks against security and driver's privacy.
    • Talking big
      A look at factors that should be considered by OEMs when implementing a telematics solution in the heavy-duty on- and off-highway mobile equipment markets.
    • One souped-up EV
      North Carolina-based Li-ion Motors draws upon the region's motorsports heritage to engineer and build what it calls the world's first all American-made electric supercar.
    • Inductive charging gets green flag
      U.K.-based start-up HaloIPT partners with Drayson Racing to bring 'dynamic' wireless charging to electric racecars.
    • Prime time for batteries
      Forecasts very on how many, and when, electrified vehicles will hit the streets, but auto and battery makers are ramping up efforts like there's no tomorrow.
    • In energy storage, materials matter
      Batteries being electrochemical devices, innovation and advances in chemistry and materials are key to what everyone agrees is the need for improved performance and life.
    • Comparing thermal characteristics of Li-ion celss
      Most Li-ion battery suppliers require that the cell temperature be as uniform as possible to achieve optimal battery performance and avoid battery system failure. But some materials in Li-ion cells have low thermal stability.
    • The world plugs into EVs
      As matters begin to settle in terms of connector types, charge-station makers are ramping up to meet the needs of a growing population of plug-in vehicles.
    • Bringing the Leaf to life
      Chief Engineer Hidetoshi Kadota leveraged 20-plus years of electrification experience in the development of Nissan's new EV.
    • Making a mass-market EV
      Nissan's Director of Product Planning and Advanced Technology Strategy details the leaf's journey from concept to production.
    • Power from within
      A new motor and inverter system have been developed simultaneously as the dedicated electric powertrain of the Nissan EV.
    • Staying within range
      The Leaf comes standard with many features designed to help ease fears of running out of "juice."
    • Why Volt?
      After 48 months' development, the 2011 Chevrolet Volt has enetered series production. The pioneering "E-REV" is as important to the mobility industry as it is to GM.
    • Creating the heart of Volt
      GM's battery requirements meant creating new state-of-the-art in-vehicle engery storage - and doing it in less than four years. Top GM and supplier engineers reveal how they did it.
    • Engineering with maniacal focus
      A dedicated, cohesive team and a conservative engineering approach put this innovative vehicle into production at moon-shot speed.
    • A unique electrified transaxle
      Hybrid or not? Definitions aside, what really matters is GM wisely leveraged its next-generation Two Mode propulsion technology to give Volt greater overall efficiency.
    • Sweating the body details
      Extensive wind-tunnel work gave Volt a shape that's slicker than it looks. But engineers aren't happy with the curb weight.
    • Achassis that Cruzes
      To speed development and minimize cost, Volt shares key underpinnings with its high-volume cousin.
    • A new role for the ICE
      Volt's modified Family Zero inline four is along for the ride- until it's needed.
    • Charging and connectivity
      GM engineers designed in maximum flexibility for keeping the Volt juiced up and connected- to the grid and to the Internet.