长下坡路段货车毂式制动器摩擦衬片温升规律  

Temperature-rising laws of drum brake pad for truck on long downgrades

作　　者：胡昌斌[1] 沈金荣[1] 陈友杰[1] 

机构地区：[1]福州大学土木工程学院,福建福州350108

出　　处：《交通运输工程学报》2009年第4期49-55,共7页Journal of Traffic and Transportation Engineering

基　　金：福建省高等学校新世纪优秀人才支持计划项目(TW2006-27);福建省自然科学基金计划项目(2009J01249)

摘　　要：以福建省龙岩G319典型事故黑点中心坑路段和小池岭路段为试验路段,设计了长下坡路段货车毂式制动器摩擦衬片温升规律实车试验方案。基于试验数据,结合有限元方法,分析了货车毂式制动器摩擦衬片在不同车辆载质量、制动方式和降温方式下的升温规律。试验结果表明:下坡时制动器摩擦衬片温度随制动行为的实施呈波动式增长;车辆总质量、摩擦衬片的使用性能和道路线形组合是影响摩擦衬片温度变化的重要因素;采用发动机挂低档制动与淋水制动能有效地减缓摩擦衬片温度的增长,实车制动行为与实际道路路况和线形组合关系密切,简单状态下的制动器有限元温度场模拟结果与实车试验结果相差较大。The Zhongxinkeng and Xiaochiling Sections on Longyan G319 of Fujian Province were chosen as test sections,which are typical accident black spots.The test plan with concrete vehicle was designd on long downgrades.Based on the finite element analysis about test data,the temperature-rising laws of brake pad under different conditions,such as different gross masses of truck,brake modes,cooling methods,were analyzed.The result indicates that when truck runs downhill,the temperature of the pad increases wavelike with the implementation of braking behavior. The gross mass, the functional performance of brake pad and road linetype combination are the key influence factors on the temperature change of brake pad. The temperature is decreased by engine brake at low gear and sprayed brake effectively. The braking behavior is closely related with road conditions and linetype combination. The simulation result of temperature field with finite element method in simple state is quite different from the result of vehicle test. 5 tabs, 20 figs, 8 refs.

关 键 词：汽车工程 实车试验 长下坡 毂式制动器 摩擦衬片 温升规律 

分 类 号：U463.55[机械工程—车辆工程]