Research on the emissions of China Ⅵ light-duty vehicle under different altitude

In order to study the effect of different altitudes on vehicle emissions, two China Ⅵ light-duty gasoline and diesel vehicles are selected to carry out pollution emission tests at different altitudes in the altitude environment simulation chamber. The result show that with the increase of altitude, CO, HC and PM emissions show an upward trend, and NOx emissions show a fluctuating downward trend.