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Development of Mild Hybrid City Bus with a Single Voltage Source of 28 V
Technical Paper
2008-01-0086
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The most popular issues nowadays in the automotive industry include reduction of environmental impacts by emission materials from automobiles as well as improvement of fuel economy. This paper deals with development of a ¡mild-hybrid¡ system for a city bus as an effort to increase fuel economy in a relatively reasonable expense. Three different technical tactics are employed; an engine is shut down at an engine idle state, a vehicle kinetic energy when the bus is decelerated is re-saved to a battery in the form of electricity, and finally the radiator cooling fan is operated by an electric motor using the saved electric energy with an optimal speed control. It has been demonstrated through the driving tests in a specific city mode, ¡Suwon city mode¡, that an average fuel economy is improved more than 12%, and the system can be a feasible choice in a city bus running in a city mode experiencing many stop and go¡s.
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Citation
Shim, D., Jung, H., Kim, S., Lim, J. et al., "Development of Mild Hybrid City Bus with a Single Voltage Source of 28 V," SAE Technical Paper 2008-01-0086, 2008, https://doi.org/10.4271/2008-01-0086.Also In
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