Press releases

ISE-Siemens Collaboration Achieves New California Certified Heavy-Duty Diesel Hybrid System

SAN DIEGO, CA, December 12, 2005 — The Siemens-ISE-Cummins team is pleased to announce that its heavy-duty diesel hybrid system has achieved California Air Resources Board certification (E.O. A-359-0005). The Siemens-ISE-Cummins system represents one of the first heavy-duty diesel hybrid system certified for sale in transit buses in California under the new California Interim Hybrid Certification Procedure.

The ThunderVolt® diesel hybrid system was certified at 1.8g/hp-hr NOx, 0.01g PM, and 15.5g CO, making it the lowest emission diesel drive system of any type for 30-, 40- and 60-foot buses.

The advanced diesel hybrid system combines the proven Siemens ELFA® electric drive system with the Cummins Heavy Duty ISB 260H engine, integrated and controlled by the ISE ThunderCan® hybrid control system. The Siemens ELFA® drive system has been integrated in hundreds of buses and has achieved more than 40 million transit miles, rendering it the most proven heavy duty electric drive system in the world. The Cummins 5.9L inline 6-cylinder engine was selected due to its low emission levels, fuel efficiency, durability and excellent performance. ISE incorporates the Siemens drive system, Cummins engine, electric accessories (braking, steering, and air conditioning), cooling systems and a new energy storage system consisting of either batteries or an ISE/Maxwell ultracapacitor pack, and the company's proprietary control system into a complete hybrid drive system assembly. This is sold as a kit to major bus and truck OEMs.

Headquartered in the Atlanta suburb of Alpharetta, Ga., Siemens Energy & Automation, Inc., manufactures and markets one of the world's broadest ranges of electrical and electronic products, systems and services to industrial and construction market customers. Its technologies range from circuit protection and energy management systems to process control, industrial software and totally integrated automation solutions. The company also has expertise in systems integration, technical services and turnkey industrial systems. For more information: visit www.sea.siemens.com.

ISE Corporation, based in San Diego, is a leading supplier of hybrid drive systems and components for heavy-duty vehicles such as buses, trucks, trams, airport equipment, and military vehicles. ISE is a world leader in electric, hybrid-electric, and fuel cell technologies, and the U.S. distributor for Siemens ELFA® electric and hybrid-electric drive components. For more information about ISE Corporation, the ThunderVolt® hybrid electric drive systems, contact Gary Willms, Vice President Business Development, at (858) 413-1736 or visit www.isecorp.com.

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