发动机取力器油封漏油问题研究  

Research on Engine Power Take-off Oil Seal Leakage Failure Mode

作　　者：王坚钢 宋文鹏 杜柏超 WANG Jiangan;SONG Wenpeng;DU Baichao(Hunan Daoyici Power Co.,Ltd.,Changsha 410000,China)

机构地区：[1]湖南道依茨动力有限公司,湖南长沙410000

出　　处：《内燃机》2023年第3期41-46,共6页Internal Combustion Engines

摘　　要：发动机取力器是工程车辆中常用的部件,主要用于提取发动机齿轮系统的动力,并将其传递至整车传动系统,以满足整车相关设备的动力需求。在取力器的运行过程中,油封漏油问题一直是该领域典型的故障模式之一。为了解决这一问题,本次研究采取了一系列改进措施。首先,将取力器油封防尘唇与对手件配合间隙设计为0.15~0.60mm的间隙值,以确保紧密配合并有效防止油封漏油。其次,将与油封配合的对手件设计为独立轴套,并将独立轴套表面硬度控制在56~63HRC范围内,以提高对手件的耐磨性和密封性能。此外,还在油封的外侧设计了防尘罩结构,有效阻止整车使用过程中颗粒杂质进入油封密封唇表面,进一步增强了密封效果。通过以上改进方法的应用,成功地解决了取力器油封漏油问题。The engine power take-off(PTO)is a commonly used component in engineering vehicles.It is primarily responsible for extracting power from the engine's gear system and transmitting it to the vehicle's drivetrain,satisfying the power requirements of various equipment on the vehicle.However,during the operation of the PTO,seal leakage has always been a typical failure mode in this field.To address this issue,a series of improvement measures were implemented in this study.Firstly,the design of the PTO seal's dust lip and mating component was adjusted to achieve a clearance fit ranging from 0.15mm to 0.60mm,ensuring a tight fit and effectively preventing seal leakage.Secondly,the mating component that interacts with the seal was designed as an independent shaft sleeve,with a surface hardness controlled within the range of 56 to 63HRC,thereby enhancing its wear resistance and sealing performance.Additionally,a dust cover structure was incorporated on the outer side of the seal to effectively prevent the entry of particles and impurities during vehicle operation,further improving the sealing effectiveness.The application of these improvement methods successfully resolved the issue of PTO seal leakage.

关 键 词：取力器 油封 漏油 发动机 

分 类 号：TK413[动力工程及工程热物理—动力机械及工程]