Abstract: Engine factory test is the key to verify its performance and reliability. Facing a wide variety of connectors and their assembly requirements, the structural design of the test harness directly affects the efficiency and accuracy of the test. Aiming at the problems existing in the process of wiring harness connection testing, this paper adopts a combination wiring harness architecture of "main line + function assisted wiring harness". Through sorting out the function definition of the existing electronic control system pins and integrating links of connectors, the wiring harness connection is standardized and modular design, which reduces the types of parts and realizes the universality and interchangeability. With the help of highly recognizable wire harness coding management, the path of wire harness is clear, the identification process of assembly workers is simplified, and the risk of misoperation is reduced. The test results show that the optimization scheme effectively solves the problem of low efficiency of connector assembly in engine bench test, improves the stability of signal transmission, provides an efficient and reliable solution for the engine test field, and reduces the upgrade and maintenance cost, which has high practical application value and promotion prospect.

Key words: harness; bench test; connector; flexibility

摘要： 发动机出厂测试是验证其性能与可靠性的关键环节，面对种类繁多的接插件及其组装 需求，其测试线束的结构设计直接影响到测试的效率和准确性。文章针对当前测试线束连接 过程中存在的问题，采用了一种“主线+功能辅助线束”的组合线束架构，通过对现有电控系 统针脚功能定义的梳理、接插件的整合链接，进行了线束连接标准化与模块化设计，减少了 零件种类，实现了通用性和互换性；借助于高辨识度的线束编码管理，确保了线束路径清晰， 简化了装配工人的识别过程，降低了误操作风险。测试结果过表明，该优化方案有效解决了 发动机台架测试中接插件装配效率低下的问题，提升了信号传输稳定性，为发动机测试领域 提供了高效、可靠的解决方案，同时有利于减少升级维护成本，具有较高的实践应用价值与 推广前景。

关键词: 线束；台架测试；接插件；柔性化