电动车用可控式离心离合器力矩特性  

Torque characteristics of a controllable centrifugal clutch for electric vehicles

作　　者：宋海军[1,2] 宋健[1] 方圣楠[1] 李飞[1] 台玉琢[1] TRUONG Sinh Nguyen SONG Haijun SONG Jian FANG Shengnan LI Fei TAI Yuzuo TRUONG Sinh Nguyen(State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China Department of Mechanical Engineering, Academy of Armored Forces Engineering, Beijing 100072, China)

机构地区：[1]清华大学汽车安全与节能国家重点实验室,北京100084 [2]装甲兵工程学院机械工程系,北京100072

出　　处：《清华大学学报（自然科学版）》2017年第7期747-752,共6页Journal of Tsinghua University(Science and Technology)

摘　　要：接合速度和力矩调节特性建模是可控式离心离合器在电动车自动变速器上应用的关键。该文首先通过分析离合器力矩特性的影响因素,建立了离心蹄块摩擦接合状态的力矩平衡方程,得到离合器力矩原始解析模型。其次,对离心蹄块的均布离心力和蹄鼓间接触压力合理简化,进一步得到离合器力矩β解析模型。对β为0°~90°的离合器接合速度调节特性和力矩调节特性进行计算分析,结果表明:该模型能够满足电动车用自动变速器对离合器特性的要求。最后,建立离合器虚拟样机,对离合器力矩调节特性进行验证,结果表明β解析模型能够反映离合器力矩调节基本特性。The adjustments of the engaged speed and torque is key for the control of centrifugal clutchs in electric vehicles automatic transmission.The factors affecting the clutch torque characteristics were analyzed to model the contact torque on the centrifugal shoe.The models for the uniform centrifugal force on the centrifugal shoe and the contact pressure between the shoe and drum are simplified to get an analytical expression for the clutch torqueβ.The regulation characteristics of the clutch engage speed and the torque aboutβare analyzed for speeds of 0° to 90° for automatic transmissions for electric vehicles.A virtual clutch prototype is used to verify the clutch torque regulation characteristics.The results show that the basic characteristics of the clutch torque regulation well are reflected by theβ-model.

关 键 词：离心离合器 电动车 解析模型 接合速度 力矩调节 

分 类 号：U463.21[机械工程—车辆工程]