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本文通过对我厂原１７０Ｆ柴油机冷起动性能的改进实践，阐述了涡流室式燃烧系统的工作机理及涡流室式柴油机的特点。并结合原１７０Ｆ柴油机分析了涡流室的结构特点及其影响冷起动及其它性能指标的主要结构参数，提出了改善其冷起动性能的技术措施，并对改进前后的关键结构参数进行了必要的验算，同时，还进行了改进前后的冷起动和主要性能指标的对比试验，试验结果达到了改进前的预期目标。本文对研究涡流室式柴油机有一定的参考价值。
In this paper, through improving the cold starting performance of the original 170F diesel engine in our factory, the working principle of the vortex chamber combustion system and the characteristics of the vortex chamber diesel engine are expounded. Combined with the original 170F diesel engine, the structural characteristics of the vortex chamber and its main structural parameters that affect the cold start and other performance indexes are analyzed. The technical measures to improve the cold start performance are put forward. The necessary checking is made for the key structural parameters before and after the improvement At the same time, the comparison tests of cold start and before and after the improvement and the main performance indexes were carried out, and the test results reached the expected target before the improvement. This article has certain reference value for the study of vortex chamber diesel engine.