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对未经磨合的再制造发动机新品进行动力性能试验,试验结果与原机标准相差较大,经分析后认为未进行充分磨合是性能不达标的主要原因。针对再制造发动机的出厂验收技术特点,制定了小负荷循环磨合规范,并对起初推断进行了试验验证。根据磨合过程中发动机动力性能的变化规律,通过试验对磨合规范进行了优化,总结出了快速有效的台架磨合规范。试验结果表明:快速磨合规范不仅能够提高磨合效率,而且保证了磨合效果。
The dynamical performance test of new products of unmanufactured remanufactured engines is quite different from the original machine standard. After analysis, it is considered that the failure of full reworking is the main reason of non-compliance. Aiming at the characteristics of the factory inspection and acceptance technology of remanufactured engines, a specification of running-in of small load cycle was developed, and the initial inference was verified by experiments. According to the changing law of engine dynamic performance during the running-in process, the running-in specifications were optimized through experiments, and a quick and effective bench-running specification was summarized. The test results show that the fast-running specification can not only improve the run-in efficiency, but also ensure the running-in effect.