Emission characteristics of light gasoline vehicles in plateau dry-hot valley area

Abstract

Aiming at the emission problem of light-duty gasoline vehicles with climatic characteristics in the dry-hot valley of the plateau equipped with OBD and FGA-4100 automobile emission analyzer, the emission tests of light-duty vehicles were carried out under different indoor speeds, different loads, different outdoor speeds and different slopes. The results show that the CO emission is always above 4.5 g/h under different working conditions between 1300-1400 m above sea level. The emission of CO2 is always above 8332 g/h. The emission of HC is always above 0.02 g/h. NO emission is always above 0.1 g/h. In the experiment, temperature has a great influence on NO emission including the temperature of the engine itself and the ambient temperature. The emission increases with the increase of temperature. High altitude and automobile acceleration will cause incomplete combustion of the engine. At the same time, the emissions of HC and CO will increase with the elevation and automobile acceleration.