【摘要】 由于柴油机运行工况条件复杂，中、低负荷工况下排气温度较低，无法满足柴油机颗粒捕捉器（DPF）主动再生的温度要求，因此需要对再生温度控制进行系统研究。研究了稳态工况下通过调节柴油机后喷油量、节气门开度对DPF内部温度控制的影响，以实现DPF入口温度满足主动再生的要求；同时研究分析降怠速（DTI）工况下不同炭载量载体再生时，DPF内部温度变化情况，以提高DPF主动再生过程中的安全性。结果表明：调节柴油机后喷油量、节气门开度，能够有效控制DPF内部温度，DTI工况下炭载量是影响DPF内部最高温度的主要因素。更多还原

【Abstract】 Because the diesel engine has a wide range of operating conditions and the exhaust temperature is low under medium and low load conditions, which cannot meet the temperature requirements of diesel particulate filter(DPF) active regeneration. At this time, it is necessary to conduct a systematic study on the regeneration temperature control. The control of the internal temperature of DPF by adjusting the fuel injection volume and throttle opening of the diesel engine under steady-state conditions was studied, so as to achieve the DPF inlet temperature to meet the requirements of active regeneration. At the same time, the temperature changes inside the DPF during the regeneration of carbon carriers with different carbon loads under the drop to idle(DTI) condition were studied and analyzed, so as to improve the safety of the DPF active regeneration process. The results show that the internal temperature of DPF can be effectively controlled by adjusting the fuel injection volume and throttle opening of diesel engine, and the carbon load under DTI condition is the main factor affecting the maximum internal temperature of DPF.更多还原