CAJ | 학술논문

基于自行设计的微粒捕集器(DPF)喷油助燃再生系统,对燃烧器内以不同油气比混合燃烧后气体与柴油机排气混合形成的高温废气温度进行试验研究,并采用过滤体孔道内的热再生模型,对DPF喷油助燃再生过程进行数值模拟,模拟结果与DPF再生试验数据吻合良好.根据再生过程的仿真结果,以怠速工况下DPF再生时过滤体壁面峰值温度、温度梯度及再生时间等为条件,研究喷油助燃再生方式下燃烧器的油气配比问题,怠速工况下再生时油气比取0.025～0.016时能够实现合理匹配.
기우자행설계적미립포집기(DPF)분유조연재생계통,대연소기내이불동유기비혼합연소후기체여시유궤배기혼합형성적고온폐기온도진행시험연구,병채용과려체공도내적열재생모형,대DPF분유조연재생과정진행수치모의,모의결과여DPF재생시험수거문합량호.근거재생과정적방진결과,이태속공황하DPF재생시과려체벽면봉치온도、온도제도급재생시간등위조건,연구분유조연재생방식하연소기적유기배비문제,태속공황하재생시유기비취0.025～0.016시능구실현합리필배.
Based on self designed burner-type system diesel particulate filter (DPF), the temperature of both gas in burner mixed with combusted combustion gas by several fuel-air matching forms and diesel exhaust gas was experimentally studied. The pyrogenation regeneration model for a channel of DPF was used to obtain the regeneration computational result, which is verified to match with experimental results well. Further, according to simulation results, the problem of fuel-air matching forms on idle condition was analyzed in regeneration performance requirements, such as wall maximum temperature, temperature gradient, regeneration time and so on, to achieve the reasonable matching for burner-type DPF.