Include: add checking in high idle,enhance checking and limit of λvalue for EFI vehicle,emission limits of two-speed idle were regulate for EFI vehicle,two fuel were test separately for bi-fuel vehicle,test methods of simple driving mode were added,the principle and method of confirm limits for exhaust pollutan.

This article has discussed the theoretical foundation and practice method of how to establish simple test of procedure.

Simplified loaded mode car testing bed of simulating mechanical inertia design;

This article firstly introduced the methods and shortages of current motor vehicle gas exhaust inspecting, then gave a detailed account for simplified loaded mode car testing and its technology development, at the same time, put forward countermeasures to implement simplified loaded mode car testing in Jiaozhou city.

Following the principle of“new vehicle by new standard and old vehicle by new standard”,double idle speed method will be taken as basic detection method and simple operating mode for gasoline automobiles and will be put into effect in stages in the countrywide.

Analysis on Influence Factors to Measurement Accuracy of VMAS

The Detecting Conditions and Evaluating Parameters on the Transient Emissions of Spark-Ignited Engines;