基于工况车辆燃油消耗的直观统计分析.pdfVIP

37 10 ( ) Vol. 37, No. 10 2 0 1 0 1 0 Journal of Hunan University( Natural Sciences) Oct1 2 0 1 0 : 1 74-2974( 2010) 10-0035-0 * 曾小华, 王庆年, 宋大凤­ ( , 130025) : 针对传统汽车油耗高而难以有效分析其燃油消耗的详细 征, 采用基于循环工 况的发动机工作时间与燃油消耗率统计方法, 分析了传统汽车发动机燃油消耗的详细三维 分布 征. 应用上述方法针对某传统客车在不同城市工况下进行仿真, 统计其转速转矩及 其燃油消耗率时间历程, 分析结果表明: 发动机绝大多数工作点均落入低转速及低负荷区, 并在这些工作区域内消耗太多的燃油. 进一步指明了发动机节能设计的方向) ) ) 发动机 MA P 的高效区域应向与实际工况相匹配的低速低负荷区移动以及通过混合动力技术减小 发动机装机容量等措施, 可为企业的产品更新和节能化设计提供实际指导. : 循环工况; 燃油消耗; 统计分析; 节能设计 : U4 9. 7 : A Direct Statistical Analyses of Vehicles Fuel Consumption Based on Driving Cycles ­ ZENG Xiao-hua, WANG Qing-nian , SONG Da-feng ( State Key Laboratory of Automobile Dynamic Simulat ion, Jilin Univ, Changchun, Jilin 130025, China) Abstract: Aiming at solving the difficulty of effectively analyzing the fuel consumption characteristics of conven- tional vehicles, this paper statistically analyzed the engine operating time and the fuel consumption rate of several typi- cal driving cycles, and used three-dimensional distribution visual analysis to identify the detailed engine fuel consump- tion characteristics. A transit bus w as simulated under several city cycles w ith the statistics of the engine speed, torque and time history of fuel rate. Results have shown that the vast majority of the engine operating points fall into the low speed and low-load zone, w here the engine consumes a