介绍了增压柴油机中增压压力对燃油喷雾混合过程和着火的影响。研究结果表明 ,柴油机增压可以改善燃油喷雾和油气混合过程。提高增压压力可以减少燃烧室壁面附近的燃油堆积 ,加强燃油和空气的空间混合 ,改善油气混合质量并缩短着火延迟期 ,使着火位置向燃烧室中心区域移动 The effect of supercharging pressure on the mixing process and ignition of the fuel spray in a turbocharged diesel engine is introduced. The results show that diesel engine pressurization can improve the fuel spray and oil-gas mixing process. Increasing supercharging pressure can reduce fuel build-up near the wall of the combustion chamber, enhance space mixing of the fuel and air, improve the quality of the oil and gas mix, shorten the ignition delay, and shift the ignition position toward the center of the combustion chamber