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为了实现混合动力车自动膜片弹簧离合器的传递转矩建模,以应用于某款混合动力客车的膜片弹簧离合器为研究对象,建立膜片弹簧弹性特性计算模型,测试离合器盖和从动盘的载荷变形特性.综合考虑从动盘、离合器盖和膜片弹簧变形对离合器工作的影响,分析离合器膜片弹簧各加载点的静力学变形耦合关系,推导膜片弹簧离合器分离指行程与零部件变形关系的解析表达式,提出以分离行程为输入、以压紧力/分离力为输出的离合器操纵特性静力学计算模型.以离合器滑摩速度和滑摩温度为试验因素,以离合器摩擦片摩擦因数为试验目标,设计二因素三水平的正交试验方案,在离合器综合试验台上进行摩擦片摩擦因数的测试,并通过计算分析得到摩擦因数回归模型.综合压紧力操纵模型和摩擦因数模型,提出离合器传递转矩的计算模型.最后通过离合器台架试验,对离合器传递转矩模型的计算结果和台架测试结果进行对比分析.结果表明:摩擦因数回归模型拟合良好,置信度达到99％;建立的离合器传递转矩模型在大转速差范围误差较大,在小转速差范围计算精度较高,其能够有效预测离合器的传递转矩.“,”In order to realize the transmitting torque modeling of automatic diaphragm spring clutch for hybrid electric vehicle,the diaphragm spring clutch applying to a hybrid electric bus was taken as the research object,and the elastic characteristic calculation model of diaphragm spring based on A-L method was established.Meanwhile,the load deformation characteristics of the clutch cover and follower disk were tested.Considering the influence of the deformation of follower disk,clutch cover and diaphragm spring on the clutch operation,the static deformation coupling relationship of the clutch diaphragm spring was analyzed.The analytical expression of the relationship between the disengage travel of the diaphragm spring clutch and the deformation of the clutch parts was derived,A static calculation model of clutch operating characteristics was presented,taking the disengage travel as the input and the pressing or separation force as the output.Taking the clutch sliding speed and sliding friction temperature as the test factors,and the friction coefficient of the clutch friction plate as the test target,the orthogonal test scheme with two factors and three levels was designed.The friction coefficient test of the clutch was carried out on the clutch comprehensive tester.A polynomial form regression equation was obtained by the calculation and analysis of test data and an empirical model of the clutch friction coefficient with sliding speed and sliding temperature was established.The clutch transmitting torque model was put forward based on the operating model of the compression force and the empirical model of the friction coefficient.Through clutch bench test,the calculation results of clutch transmitting torque model and bench test results were compared and analyzed.The results show that the regression model of the friction coefficient fits well,and the confidence coefficient is 99％.The error of the transmitting torque model of the bus diaphragm spring clutch is large in the range of large rotate speed differences,whilst in the range of small rotate speed differences,the calculation accuracy is high.The presented model can effectively predict the clutch transmitting torque.