直喷式废气涡轮增压柴油机在急加载时，排放废气中的碳烟是恒定转速时的数倍。这是由于废气涡轮回转体的惯性，使发动机转速上升较慢，增压压力的增加也变慢，从而导致燃烧时进气不足。此时，气缸内空气涡流的流动变弱，燃烧恶化；且又因涡流扩散不充分使燃油雾化变差。通过实 Direct injection exhaust turbocharged diesel engine in the emergency load, the exhaust emissions of soot is a constant speed of several times. This is due to the inertia of the exhaust gas turbine revolution body, causing the engine speed to rise slowly and the increase in supercharging pressure to slow, resulting in insufficient intake air during combustion. At this time, the flow of air vortex in the cylinder is weakened and the combustion is deteriorated, and the fuel atomization is deteriorated due to insufficient vortex diffusion. Through the real