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为提高190─12型柴油机的性能、可靠性和寿命,广东省农机厅于1979年下文改进190─12型活塞环的结构设计和工艺材质,1980年同时列为广东省科学技术重点项目,经三年试验研究,广东省农业机械厅于1981年12月组织鉴定通过。认为由广东省机械研究所等单位共同试验研究的190─12型加铌铸铁活塞环的各项技术性能指标已达到攻关计划任务书的要求和国内先进水平。本刊全部刊登其经验,以供同行业参考。
In order to improve the performance, reliability and longevity of 190-12 diesel engine, Guangdong Agricultural Machinery Department improved the structural design and process material of 190-12 type piston ring in 1979, listed as the key science and technology project of Guangdong Province in 1980, Three years of experimental research, Guangdong Provincial Department of Agricultural Machinery in December 1981 organized appraisal. It is considered that the technical performance indexes of the 190 - 12 type plus niobium cast iron piston ring, which were jointly researched and studied by such institutes as Guangdong Machinery Research Institute, have reached the requirements of the research project and the advanced level in China. Publication of all its published experience for the same industry reference.