Adaptability Analysis Of Hybrid Electricity Taxi In Plateau Area

The shortage of energy and the degradation environment is promoting the development of electric vehicles. Governments and auto companies are struggling to promote the large scale production of hybrid electric vehicles. The operational data and failures of100hybrid electric taxies and15traditional taxies in Kunming were collected and counted, and the operating adaptability of hybrid electric vehicle in plateau was analyzed, so the suggestion of the promotion of hybrid electric vehicle in plateau was provided. In this paper, the operating economy between hybrid taxi and traditional taxi has been analyzed and compared. The long-term operating data of hybrid taxi has been analyzed in two way ANOVA analyses. The difference of hybrid electric taxi’s fuel economy in plateau and plain has been analyzed and compared. The cost of hybrid taxi and traditional taxi has been analyzed and compared. The hybrid taxi’s failures have been counted in different classification. Two hybrid taxies were selected randomly and the effect of failures on their fuel economy has been analyzed. The original model taxi and the optimization model of hybrid electric taxi have been built in AVL Cruise and the difference between two models’performance during urban driving cycle and braking process has been analyzed and compared.The result shows that the average of the hybrid electric taxies’100km fuel consumption is7.98L, and the average of the traditional taxies’100km fuel consumption is8.42L. The5.2%of fuel consumption is saved on the hybrid electric taxi, so the hybrid electric taxi could save fuel to a certain extent. The difference of operational data between hybrid electric taxies is more than the difference of operational data between the months. Due to the engine’s small displacement and rated power which the environmental factors in plateau could affect seriously and the large battery weight of hybrid electric taxi, the average of the hybrid electric taxies’100km fuel consumption increase obviously. So the weight of hybrid electric taxi should be lighter and the control strategies of hybrid electric taxi in plateau should be improved. After the subsidy of government is provided, the acquisition cost of hybrid taxi reduces by14%compared to traditional taxi. In the same monthly mileage, the operating cost of hybrid taxi is lower than traditional taxi. The hybrid electric taxi structure, urban road condition and driving habits could affect the performance of hybrid taxi. There are many failures in the dynamic system of hybrid electric taxi. The disability of the idling start&stop and regenerative braking energy function is representative and could affect the fuel economy of hybrid electric taxi. The result of urban driving cycle simulation analysis of two models shows that the engine of optimization model could run in different speed region, so the fuel economy and emissions performance is better and the efficiency of reclaiming braking energy is greater in the optimization model the optimization model. The simulation analysis’ result of slow braking process shows that the input energy of ISG motor in the optimization model is several times of the model. The simulation analysis’result of emergency braking process shows that the function of reclaiming braking energy in the original model and optimization model is not be started, and the emergency braking performance of two models is in line with national standards.