As of April 2007 ISE has over 100 gasoline series hybrid-electric drive systems in transit buses that are in daily revenue service. These buses have accumulated over four million miles with 94% availability. 47 of these buses are in daily service at Long Beach Transit and have accumulated over 3 million miles. By the end of 2008 there may be over 200 gasoline hybrid-electric transit buses in service. All of these series hybrid systems use ultracapacitor energy storage and Siemens ELFA motor/generator components. The paper summarizes the operation results as following. The Long Beach hybrid bus fleet availability is better than the conventional buses. No fleet defects are apparent and component reliability continues to improve as problems are discovered and solved. The hybrid buses are well received by riders, operators and maintenance personnel. The hybrid bus fleet is saving tons of exhaust emissions. The energy storage and electric component technology continues to evolve and offer the future potential of increased performance and reliability. Hybrid buses have lower life cycle cost when the purchase price is subsidized. Lower priced reliable heavy-duty hybrid-electric designs may have to wait for some economies of scale. The technology is extending to other fuels and lower weight vehicles.
Report card for 47 long beach hybrid buses and assessment of the ultracapacitor energy storage
Report-Karte für 47-Meter-Hybridbusse und Beurteilung des Ultra-Cap-Energiespeichers
2007
8 Seiten, 2 Bilder, 1 Tabelle
Conference paper
English
Energy Storage: Ultracapacitor
Springer Verlag | 2021
|British Library Conference Proceedings | 2001
|Automotive engineering | 2001
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