The particle emission of fuel vehicles were introduced under different operation conditions, and hazard of synergistic action of different diameter particles and other air pollutant on human body health are elaborated.

• 摘要本文介绍了燃油机动车在不同运行状况下排放颗粒物的情况；以及不同粒径颗粒物与其它环境空气中污染物协同作用对人体健康的危害。