基于尾气分析的发动机故障诊断OA

There is a close relationship between the operating condition of a engine and the vent gas composition, the operating condition of a engine, air-fuel ratio, and ignition timing also have a direct influence on the content of HC, CO and NOx. In this paper, the anonaly of the vent gas composition is analyzed and the engine fault could lastly be diagnosed based on the correlation between the vent gas composition and the fault in a engine system.