Abstract: Based on the real driving emission test data of a lot of CHINA six-stage heavy-duty diesel vehicles, this paper selects four prototype vehicles that had undergone active DPF(diesel engine particulate trap) regeneration during the test. After the DPF active regeneration of the prototype vehicles was completed, the real driving emission tests under normal condition were performed. Comparing the emission test data of the prototype DPF active regeneration with the normal state, the results showed that compared with the normal state, when the prototype DPF actively regenerated, the NOX and PN did not meet the requirement of the CHINA Six-stage emission regulation, and the NOX increased by 5.8-29.4 times; PN increased by 14.0-7148.9 times; CO did not have a consistent change trend; CO2 increased by 6.3-24.2%; fuel consumption increased by 16.2-32.8%; dynamic performance remained unchanged.

Key words: DPF active regeneration; CO; NOx; PN; Fuel consumption; Power

摘要： 基于大量国六重型柴油车实际道路排放测试数据，文章选取了四辆测试过程中 DPF（柴油 机颗粒捕集器）主动再生的样车。样车 DPF 主动再生完毕后，进行正常状态下的实际道路排放测 试。对比样车 DPF 主动再生与正常状态下的排放测试数据，结果表明，相比于正常状态，样车 DPF 主动再生时，NOX 和 PN 均不满足国六排放法规要求，NOX 升高了 5.8～29.4 倍；PN 升高了 14.0～ 7 148.9 倍；CO 没有一致的变化趋势；CO2 升高了 6.3%～24.2%；油耗升高了 16.2%～32.8%；动 力性不变。

关键词: DPF 主动再生；CO；NOX；PN；油耗；动力性