Study on Vehicle Fuel Evaporative Emissions Test System

In line with the testing requirements for vehicle fuel evaporative emissions by national testing agencies and the new national standard of GB14763-2005, a set of measuring and test system is developed. This article discusses the basic composition and working principle of the test system, and introduces development process of the testing software. It is verified that the test device has higher automation degree and test accuracy through a test debugging, and it achieves the desired design goals.