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Global Concepts (Part 2)
Dodge ESX3
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Drawing on technology developed for the Partnership for a New Generation of Vehicles (PNGV), DaimlerChrysler has developed what it terms a "mild hybrid" concept car-the Dodge ESX3. Its "mild hybrid" electric powertrain combines a diesel engine, electric motor, and lithium-ion batteries to achieve an average 3.3 L/100 km (72 mpg) gasoline-equivalent fuel efficiency. Delphi Automotive Systems provided its Energen hybrid electric propulsion system and developed the battery safety system in conjunction with other program partners, as well as a new high-power connection system. The car's lightweight body is designed to make use of injection-molded thermoplastic technology for significant improvements in weight and cost. The low-cost, lightweight material also helps offset the cost of the powertrain. The main structure of the car is made of only 12 parts, compared to as many as 100 metal panels in a conventional car. The body is estimated to have a mass 46% less and cost 15% less to manufacture than a comparable metal body. DaimlerChrysler intends to patent the proprietary mix of thermoplastic, aluminum, and lightweight structural foam intended for the ESX3's body. Total ESX3 mass is just 1020 kg (2250 lb), but still meets all federal safety standards and providing the room of a typical family sedan.
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