The investigation and analysis on the emission level of 133 in-use light-duty gasoline-fuelled vehicles and the quality of gasoline fuel in China are carried out with some suggestions for in-use vehicle emission control proposed.

• 摘要对我国市场上133辆在用轻型汽油车进行了工况法和双怠速排放及市售燃油质量调查与分析，并提出了对在用车排放管理的几点建议。