| 摘要:针对某型柴油机设计开发过程中，气缸套第一道活塞环上止点位置温度偏高，存在滑油结焦引起拉缸风险的问题,对油气室匹配及气缸套冷却进行改进，改进前后的缸内喷雾燃烧计算及气缸套热-结构耦合仿真对比分析表明:优化后的气缸套第一道活塞环上止点位置温度明显降低。后续的试验验证也表明:上述措施有效降低了气缸套第一道活塞环上止点位置的工作温度，气缸套-活塞环摩擦副的可靠性得到提高。 |
| 关键词: 气缸套 温度场 热负荷 优化 |
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| Temperature Field Optimization of a Cylinder Liner and Test Verification |
| Lu Chuanrong,Tang Yihu,Zhang Guoyong,Zhang Huabing,Yan Ping |
| Naval Deputy Office of SMDERI, Shanghai 201108;Shanghai Marine Diesel Engine Research Institute, Shanghai 201108 |
| Abstract:In the development of a certain type of diesel engine, the temperature of the first piston ring at TDC was relatively high, which may lead to the risk of cylinder scuffing because of lube oil coking. The matching of fuel and air and combusition chamber, as well as the cooling of cylinder liner were improved. The spray and combustion calculation in cylinder and thermo-structure coupling simulation of cylinder li-ners before and after optimization showed that the temperature of the first piston ring at TDC reduced significantly. The follow-up test verified that the above measures could reduce the temperature of the first piston ring at TDC effectively, and the reliability of the friction coupling of cylinder liner-piston ring could be improved. |
| Key words: cylinder liner temperature field thermal load optimization |
