Since the electric motor of pure electric vehicle replaced the engine, the "masking effect" disappears, and the problem of vibration and noise of the transmission becomes prominent. This is generated during the gear meshing and is transmitted to the housing through the shaft and bearing. Thereby, radiation noise of the housing are generated. The prediction and analysis...

To establish a suitable pure electric bus arrival time prediction model, this paper takes as the research object. Based on analysis of influencing factors bus, BP neural network model optimized by firefly algorithm (FA-BP model) is established selecting vehicle type, SOC value, battery age, and input conditions. The trained tested using operation data. root mean square error Kalman filter 0.351...

Hybrid-electric school buses became available in the US through a national consortium designed to bring hybrid-electric school buses to market by creating enough demand among school districts to encourage manufacturers to invest in development of the technology. A number of school districts in the US joined the HESB project to purchase plug-in hybrid-electric school buses. Sixteen hybrid-electr...

this paper proposes a new method for transmission loss allocation. the share of each bus in the transmission line losses is determined using transmission line loss equations with respect to bus-injected currents. then, it is applied to the total network transmission lines. in the proposed method, comparing with other methods, a solution to remove the negative loss allocation has been introduced...

In order to prevent global warming, the emissions of greenhouse gases must be reduced. In public transportation systems, electric buses can help to achieve this. However, the deployment of electric buses has been limited to public corporations as a result of the weight of the required energy storage devices. One approach to addressing this problem is rapidly charging the electric bus at every b...

In this paper, an indirect adaptive fuzzy sliding mode control scheme is designed for hybrid electric bus. The trajectory tracking control for stopping the bus in a bus station is proposed. The control strategies of regenerative braking in the hybrid electric bus add the control difficulty of the longitudinal braking system. Its nonlinearities are estimated by adaptive fuzzy method and projecti...

When the exhaust temperature of heat pump air conditioning system pure electric bus is too high, performance attenuated. In order to solve problem, an alternative with low pressure supply developed. The experimental platform set up reveal main factors affecting refrigeration and heating system. results show that air-supply technology can significantly reduce compressor.

Based on analysis of the configuration and powertrain parameters of the series hybrid electric bus typically operating in certain Chinese city, this paper establishes simulation model of the series hybrid powertrain. The energy efficiency and fuel economy of the series hybrid electric bus are analyzed by energy flow method in the driving cycles of Chinese typical city, Zhuzhou city in Hunan pro...