CAJ | 학술논문

针对发动机不同型号连杆小端轴承摩擦磨损试验，设计并研制一种摆动摩擦副的摩擦磨损试验台。试验台由摆动机构、液压加载系统、数据采集和PC控制系统三大部分组成。以变频调速电机作为驱动装置实现试验台被测摩擦副的相对摆动；设计液压系统作为试验台载荷激励源，以模拟发动机爆发压力；通过改变脉宽调制（PWM）信号的频率和占空比，采用计算机控制技术实现对载荷激励的控制。试验台工作转速、激励幅值、激励频率可调范围大，信号采集、分析处理及存储均可自动完成，能满足不同规格、不同工况的发动机摆动摩擦副摩擦磨损模拟试验要求。
침대발동궤불동형호련간소단축승마찰마손시험，설계병연제일충파동마찰부적마찰마손시험태。시험태유파동궤구、액압가재계통、수거채집화PC공제계통삼대부분조성。이변빈조속전궤작위구동장치실현시험태피측마찰부적상대파동；설계액압계통작위시험태재하격려원，이모의발동궤폭발압력；통과개변맥관조제（PWM）신호적빈솔화점공비，채용계산궤공제기술실현대재하격려적공제。시험태공작전속、격려폭치、격려빈솔가조범위대，신호채집、분석처리급존저균가자동완성，능만족불동규격、불동공황적발동궤파동마찰부마찰마손모의시험요구。
A test machine on friction and wear for connecting rod bushing of IC engine was designed and built,which was composed of swing mechanism,hydraulic stroker,data acquisition and PC control system.Pendulum motion of connect-ing rod bushing was driven by frequency control motor in swing mechanism.Driving load source was supplied by the hy-draulic stroker.Controllable load excitation was achieved by PC through changing frequency and duty ratio of PWM.Opera-tion speed and load excitation of the test machine could be adjusted in wide range,and collection,analysis and storage of test signals could be performed automatically.The test machine can be applied to approach the friction and wear for con-necting rod bushing of IC engine in the different size and work condition.