Wang Xin, FAW Jiefang Powertrain Division (Wuxi), China
China User Conference 2026

This case study demonstrates how to efficiently address the challenge of analysing the temperature field of pistons in high cylinder pressure heavy-duty diesel engines, using the professional FEARCE-Vulcan thermal simulation tool and an innovative "core component modelling + semi-empirical formula" approach. The model established with this method improved computational efficiency by a factor of a hundred while maintaining high accuracy. Based on this model, pistons made of steel and iron were compared. The results showed that, due to its lower thermal conductivity, the iron piston exhibited a higher maximum temperature at the top centre compared to the steel piston. Moreover, areas like the first ring groove were more prone to heat accumulation, resulting in higher thermal loads and greater cooling requirements. This work provided crucial data for piston material selection, cooling structure optimisation, and thermal management strategy development, effectively supporting the forward reliability engineering of high-power-density engines.

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This was presented by Wang Xin, FAW Jiefang Powertrain Division (Wuxi) at the 2026 China User Conference on 20 May 2026.