On The HC Emission Statistical Feature and Regularity of Passenger Car

Based on HC emission sample data tested in engine idle condition, the statistical feature and statistical regularity of given type passenger car's HC emission were researched. The distribution function and distribution density function models were established respectively, which can subtly delineate the statistical regularity. In this research, the exact values of model parameters were given out also. The simulation modeling results replicate the real world test well. This research puts forward the concrete proposal to revise Chinese national standard of controlling vehicle emission, and points out that the I/M program should be strengthened in order to control vehicle emission pollution in normal use. This research should play an important part in calculating the HC emission data of passenger car accurately, evaluating the pollution caused by passenger car HC emission to atmospheric environment of cities and their suburbs accurately, and revising vehicle emission control laws and regulations.