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柴油机涡流室中，燃烧室的面容比较大，冷起动较难；柴油机涡流室镶块在冷热交变工况的作用下易发生热疲劳、裂纹、脱落等现象－ 为了改善柴油机涡流室的冷起动性，提高镶块的可靠性，笔者提出了新型镶块材料———细结构模压石墨，并采用试验对比的方法，研究了４Ｃｒ９Ｓｉ２ 、铸铁、陶瓷和模压石墨四种镶块材料的热导率、冷起动性、排温、油耗及示功图－ 分析试验结果后得出：新型镶块材料———细结构模压石墨能减轻机械负荷，降低燃烧噪声，提高柴油机的可靠性，改善柴油机的冷起动性和经济性－
Diesel vortex chamber, the combustion chamber face is relatively large, cold start more difficult; Diesel swirl chamber inserts block under the action of alternating hot and cold conditions prone to thermal fatigue, cracks, shedding and so on - in order to improve the vortex chamber of the cold Start-up, improve the reliability of the insert, the author proposed a new type of embedded materials - fine structure of molded graphite, and the use of experimental comparison method to study the 4Cr9Si2, cast iron, ceramic and molded graphite four inserts thermal conductivity Rate, cold start, exhaust temperature, fuel consumption and dynamometer - Analysis of the test results: the new insert material --- fine structure molded graphite can reduce the mechanical load, reduce combustion noise, improve the reliability of diesel engines, improve the diesel engine Cold start and economy -