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在第一部分研究中,研究人员发现在高速往复运动状态下热管的导热系数有显著改善。然而,由于商用热管即使经受高速往复运动,其导热系数也不易提高,因而这种冷却方法很难应用到轿车发动机的活塞冷却。鉴于第一部分报告中的数据,本田公司技术中心决定开展轿车发动机活塞冷却用的热管设计研究,提出了1种最佳设计方案,并对它进行了热分析。结果发现,它可以将热量从必需冷却的活塞头中心区域传递到活塞裙部,显示了其有效冷却的可能性。虽然这种分析是基于一些假设,并且还存在因加装热管带来的耐久性和质量增加等问题,但通过创新努力可以将其拓展成为1种高级的发动机冷却系统。
In the first part of the study, researchers found that the thermal conductivity of heat pipes was significantly improved at high speed reciprocating motion. However, since commercial heat pipes are not easily improved in thermal conductivity even under high-speed reciprocating motion, this cooling method is hardly applicable to the piston cooling of passenger car engines. In view of the data reported in the first part of the report, the Honda Technology Center decided to conduct a heat pipe design study on the piston cooling of a car engine. One of the best design solutions was proposed and its thermal analysis was conducted. It was found that it could transfer heat from the central area of the piston head that had to be cooled to the piston skirt, showing the possibility of its effective cooling. While this analysis is based on assumptions and issues such as increased durability and quality due to the addition of heat pipes, it can be extended to become an advanced engine cooling system through innovative efforts.