The radiator emits high-temperature heat generated in the engine. The aluminum radiator that is light-weighted and has an excellent heat transfer is used for high efficiency engines. The aluminum radiator was introduced in the construction equipment i...
The radiator emits high-temperature heat generated in the engine. The aluminum radiator that is light-weighted and has an excellent heat transfer is used for high efficiency engines. The aluminum radiator was introduced in the construction equipment in the late 2000s, and since then the reliability of radiator has been improved by the efforts of manufacturers. The radiator is exposed to a high temperature when the engine is running and to a low temperature when the engine stops. The radiator is failed by the fatigue due to the cyclic expansion and contraction. In this paper, we estimate a reliability parameter for the radiator by performing the life test with the thermal shock by alternatively circulating high temperature fluid and low temperature fluid directly to the radiator. And the durability of the improved radiator is evaluated using a Weibayes analysis.