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燃烧室内的空气运动对燃烧过程有重要影响 ,然而实际发动机的缸内气流运动不便直接测量 本文根据稳流气道试验台的试验结果 ,建立了进气涡流预测模型 ,将稳流试验与实际进气过程有机地联系起来 根据所建立模型的模拟计算结果 ,对试验样机的进气道进行改进 改进后的进气道所产生的进气涡流与油束匹配良好 ,降低了发动机的燃油耗和排气温度
The air movement in the combustion chamber has an important influence on the combustion process. However, it is inconvenient to measure the direct airflow in the actual engine. Based on the test results of the steady flow airway test rig, a prediction model of intake vortex is established. The steady flow test and actual intake The process is organically linked. Based on the simulation results of the established model, the inlet of the test prototype is improved. The intake vortex generated by the improved inlet matches well with the oil bundles, reducing the fuel consumption and exhaust of the engine temperature