The Study of Vehicle Emission Properties on Real-Road Condition and the Influence of Some Important Factors

In this paper,the distribution properties of vehicle emission factors on real road condition and the influence of some important parameters such as speed and acceleration are studied by using a set of on board real time measuring system.The result shows the high emission part on driving mode areas of HC,CO and NO expressed by both forms of g/km and g/kg.The existence of these parts can be explained clearly according to the vehicle speed and the specific fuel consumption of the engine.To improve the city traffic and optimize the combustion of engine is the best way to reduce the exhaust emissions of vehicle in the atmosphere.