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Cooling water channel is the core structure of diesel engine cooling, and its flow characteristics have an important impact on the reliability and cooling effect of the diesel engine, a motorcycle tricycle high-pressure common rail single-cylinder diesel engine as a research object, in order to understand the change of the engine's water jacket flow characteristics and the rationality of the design of the water jacket structure, this paper utilizes the CFD method of the engine's cooling water channel inside the coolant flow characteristics of the simulation. Through the analysis of the cooling water channel speed, pressure, turbulent kinetic energy flow characteristics, it is found that the average flow speed of the coolant is lower than 0.5m/s, and the coolant flow cyclicity does not meet the design requirements; the pressure inside the cooling water cavity, the turbulent kinetic energy distribution are in line with the design requirements. Adopting increase in inlet flow rate and structure optimization scheme, the average flow rate of the overall coolant is increased by 165.62% compared with the original scheme, and the overall coolant fluidity is improved.
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Chen et al. (2024) studied this question.
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