Core Viewpoint - Avita Technology conducted wind tunnel tests for the Avita 12, achieving a drag coefficient of 0.2171Cd at a wind speed of 120KPH, indicating strong aerodynamic performance and potential for energy efficiency [1][2]. Group 1: Wind Tunnel Testing - The wind tunnel tests were performed at the China Automotive Engineering Research Institute, which has developed advanced facilities for automotive aerodynamics and acoustics since its establishment in 2014 [1]. - The tests simulated six different conditions to analyze the factors affecting the drag coefficient, revealing variations in drag coefficients based on different configurations and driving states [2]. Group 2: Drag Coefficient Results - At a wind speed of 160KPH, the drag coefficient was measured at 0.217Cd, which slightly increased to 0.2171Cd at 120KPH [2]. - Changing to sport wheels raised the drag coefficient to 0.2327Cd, while modifications like physical rearview mirrors and enhanced air suspension resulted in a drag coefficient of 0.2509Cd [2]. - The drag coefficient further increased to 0.2741Cd with the active grille shutter open, and to 0.2973Cd when the vehicle was offset by 5 degrees at 120KPH [2]. Group 3: Factors Influencing Variations - Avita Technology identified three main reasons for the discrepancies in drag coefficient measurements: differences in configuration or functional states, variations in testing methods, and the completeness of vehicle components [2]. - Factors such as whether the active grille shutter was open, the weight distribution during testing, and the presence of exhaust systems in range-extended models were noted as influential [2]. Group 4: Oversight and Validation - The testing was supervised by a notary and witnessed by key personnel from Avita Technology, Chongqing University of Technology, and Changan Automobile Engineering Research Institute [3].
阿维塔12风洞实测:低风阻状态下风阻系数0.2171Cd
Zhong Guo Xin Wen Wang·2025-05-11 09:43