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ISE to Provide More Diesel Hybrid-Electric Drives for Opus Hybrids

ISE Corporation recently received orders for its ThunderVolt diesel series hybrid-electric drive systems for additional 30-foot Optima Opus buses. (Earlier post.)

These are part of a contract awarded to Optima Bus LLC in 2006 by the town of Avon, CO. The original award included a base order of up to five hybrid Opus buses with an option of an additional 10 buses.

The diesel hybrid system combines a Siemens ELFA electric drive system with a 6-cylinder, 5.9-liter Cummins ISB 260 hp (194 kW) engine, integrated and controlled by the ISE ThunderCan hybrid control system. Storage is provided by dual ISE/Maxwell ultracapacitor packs. Dual 85 kW electric drive motors provide 200 Nm of rated torque each.

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