Browse Publications Technical Papers 2010-32-0131

Low Cost Hybrid Motorcycle Optimisation Model 2010-32-0131

The application of hybridization technology is now widely regarded as a significant step forward to reduce fuel consumption and hence CO₂ emissions for ground vehicles. Many programs and much research has been done on these technologies in the automotive market, however little work has been done in the very cost sensitive market sector of the small motorcycle.
This paper introduces and discusses the application of a low-cost hybrid technology to small motorcycles and scooters, and reviews some of the initial trade-offs through the use of a new hybrid simulation model developed at Cranfield University.
The study being presented assessed the existing Energy Storage Systems (ESS) in the market. This list was reduced, omitting options which posed a clear safety or cost risk, or solutions which would disproportionally increased the Gross Vehicle Weight (GVW). Also omitted were storage options which could not be production ready in the near term, 3 - 5 years. Applicable hybrid platform topologies were then assessed and most appropriate selected; a series Hybrid Electric Vehicle (HEV) with a power following strategy, and a short range parallel Plug-in Hybrid Electric Vehicle (PHEV).
A systems level model was then developed reflecting a baseline mechanical-powered vehicle, and applicable drive cycles were selected to benchmark this vehicle. Models were built of the two hybrid topologies mentioned with parameterization capability regarding the ESS mass, capacity and peak power. Thus the models were used to show the most appropriate ESS in terms of GVW impact and cost while maintaining the performance targets set by the baseline vehicle over the pre-selected drive cycles.


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