轻型柴油车辆寒带空气量偏差下限报错原因探究

Study on the Causes of Errors in the Minimum Air Deviation of Cold Environment in Light Diesel Vehicles

我们首先分析了空气量偏差报错的直接原因,其次分析导致空气量下偏差报错机理,确定环境温度、OBD限值标定、EGR冷却器结胶、EGR废气管路出口结冰等影响空气量偏差的因素;又对各种影响因素导致空气量偏差的具体原因进行了分析,并给出了合理的改善措施。

This paper first analyzes the direct cause of error in air deviation.Secondly,it analyzes the mechanism of error caused by minimum air deviation.It determines factors such as ambient temperature,OBD limit,EGR cooler block,EGR exhaust outlet icing that affect air deviation,analyzes the specific causes of the air deviation caused by various influencing factors and gives the reasonable improvement measure.