轻型车RDE动力学参数特征与验证合理性研究

马志磊; 何超; 李加强; 刘学渊

车用发动机 ›› 2022, Vol. 0 ›› Issue (1) : 78-85.

栏目

轻型车RDE动力学参数特征与验证合理性研究

马志磊^1,2，何超¹，李加强¹，刘学渊^1,2

作者信息 +

Characteristics of Dynamic Parameter and Validation Rationality of RDE Test for LightDuty Vehicle

MA Zhilei¹^,2,HE Chao¹,LI Jiaqiang¹,LIU Xueyuan^1,2

Author information +

文章历史 +

摘要

为研究RDE试验动力学参数的特征与不同海拔对窗口正常性验证的影响，按照轻型车国六排放标准的要求进行12次道路试验。结果表明： v·a_pos_［95］随着车速上升而升高，RPA随着车速上升而下降。按第95百分位取值得到的v·a_pos_［95］不能很好地反映各速度组v·a_pos值的总体变化规律，取值位置前移可改善这一问题。通过动力学参数判断，WLTC循环比RDE试验激烈。市区窗口正常性验证中，计算P1点使用系数1.2，将使基准线过高，降低验证的通过率。高海拔地区的市郊、高速窗口验证中，计算P2、P3点时使用的系数应降低。

Abstract

In order to study the characteristics of dynamic parameters and the influence of different altitudes on window normality verification, RDE test was carried out 12 times according to the China Ⅵ emission legislation of lightduty vehicle. The results show that v·a_pos_［95］ increases and RPA decreases with the increase of vehicle speed. v·a_pos_［95］ is acquired according to the 95th percentile, which cannot represent the overall law of v·a_pos for each speed group. The percentile for value obtaining hence should move forward. WLTC cycle is more intense than RDE test according to dynamic parameters. Using 1.2 coefficient to calculate P1 point for normal verification of urban window will make the baseline so high as to decrease the pass rate of verification. In the verification of suburban and highspeed windows at high altitude, the coefficient used in calculating P2 and P3 points should decrease.

导出引用

马志磊，何超，李加强，刘学渊. 轻型车RDE动力学参数特征与验证合理性研究[J]. 车用发动机. 2022, 0(1): 78-85

MA Zhilei,HE Chao,LI Jiaqiang,LIU Xueyuan. Characteristics of Dynamic Parameter and Validation Rationality of RDE Test for LightDuty Vehicle[J]. Vehicle Engine. 2022, 0(1): 78-85