Research on the Cooling Water Chamber Structure of OP2S Engine Based on Taguchi Algorithm-Signal to Noise Ratio Analysis

In response to the complex structure of the cooling water chamber in opposed piston two-stroke engines, which has adverse effects on the flow of cooling water, a Taguchi algorithm-signal to noise ratio analysis-based optimization method for the cooling water chamber structure parameters is proposed. The experimental parameters include the diameter of the exhaust outlet water channel, the outer diameter of the exhaust side water chamber, and the outer diameter of the combustion chamber water chamber. Orthogonal experiments are designed, with the maximum pressure difference, maximum flow rate difference, and maximum turbulent kinetic energy of the cooling water as evaluation indicators, by analyzing the signal-to-noise ratio and range of simulation results, the optimal combination of cooling water chamber structural parameters is obtained. The optimization results show that the optimal structural parameters of the cooling water chamber are the diameter of the exhaust port waterway of 3.5mm, the outer diameter of the exhaust side water chamber of 75mm, and the outer diameter of the combustion chamber water chamber of 72mm. Compared with the initial plan, the cooling water flow characteristics are effectively optimized.