摘要
汽车发动机张紧器在实际应用中往往受到不规则冲击力的作用,而且张紧器的工作性能与张紧器受力后的响应位移与响应阻尼力密切相关。文章为了研究张紧器在阶跃力作用下的响应状态,建立了某发动机液压皮带张紧器的数学模型,在数学模型的基础上建立Simulink仿真模型,通过输入一定的阶跃力,并以张紧器的最大响应位移与最大响应阻尼力为评价指标,分析相关参数对其响应状态的影响。最终得出充分发挥张紧器性能需要保证液压油体积模量不小于500 MPa、泄漏间隙的设计在0.05 mm以内、活塞直径处于12 mm或14 mm左右。
The automotive engine tensioner is often subjected to irregular force in practical applications, and the working performance and the response displacement of the tensioner are closely related to the response damping force. In order to study the response state of the tensioner under the step force, the mathematical model of an engine hydraulic belt tensioner is established. Then the Simulink simulation model is established, which is based on the mathematical model. By inputting a certain step force, the maximum response displacement of the tensioner and the maximum response damping force are used as the evaluation index to analyze the influence of the relevant parameters on its response state. Finally, in order to optimize the performance of the tensioner, it is needed to ensure that the hydraulic oil bulk modulus is not less than 500 MPa, the leakage gap is within 0.05 mm, and the piston diameter is about 12 mm or 14 mm.
作者
胡延平
徐鹏
周艳飞
高喜
骆汉丰
HU Yanping;XU Peng;ZHOU Yanfei;GAO Xi;LUO Hanfeng(School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China;Technical Department, Taizhou Yuhuan Zhongben Machinery Co., Ltd., Taizhou 317600, China)
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2019年第4期445-449,485,共6页
Journal of Hefei University of Technology：Natural Science
基金
合肥工业大学产学研校企合作资助项目(11-646)
关键词
液压皮带张紧器
响应特性
体积模量
泄漏间隙
活塞直径
hydraulic belt tensioner
response characteristic
bulk modulus
leakage gap
piston diameter
