In this paper, the simulation method of calculating the fuel consumption of heavy-duty commercial vehicles based on VECTO (Vehicle Energy Consumption Calculation Tool) was introduced, and the fuel consumption of four vehicles under C-WTVC and CHTC cycles was calculated with VECTO. The differences between C-WTVC and CHTC cycles were analyzed by comparing the characteristic parameters, and the fuel consumption map and driving acceleration of two cycles were compared, so as to explore the influence of different test cycles on fuel consumption. The results show that compared with the C-WTVC cycle, the fuel consumption of CHTC cycle increases by 17.08g/km~28.12g/km, with an increase of 6.42%~17.26%. Most of the engine working points in the CHTC cycle work in the middle and low speed and torque regions and the acceleration range of CHTC cycle is wider are important reasons for the increase of fuel consumption.
Using the virtual proving ground technique, CAE work can be put in front. Major performance problems of vehicles will be found and handled in advance to improve the research and development efficiency and reduce costs for automotive manufactures. However, this technique is relatively difficult to be implemented in NVH due to the complexity of tire modeling and other problems. Therefore, to deal with these issues, a complete simulation procedure for vehicle road noise was studied in this paper, in which PSD information of test road and CDTire model were integrated as the input of the whole vehicle simulation model successfully. The types of roads and tires, and tire mechanical parameters were compared investigated to provide useful suggestion to automotive manufacturers for NVH design.
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