CAJ | 학술논문

在DPF主动再生过程中，如果柴油机运行工况突降至怠速状态，会使DPF内部温度峰值和温度梯度迅速升高，易导致DPF出现烧熔现象，针对该问题，进行了基于怠速提升的DPF主动再生温度控制的试验研究。结果表明：再生过程降至怠速工况时，载体出口端中心附近的温度和温度梯度升高幅度最大；随着怠速的提升载体的温度峰值和温度梯度逐渐降低，怠速提升至1100 r／min时，最高温度峰值由820℃左右降至632℃左右，降低了约22．9％，最大温度梯度由30℃ ／cm左右降至10℃ ／cm左右，降低了约66．7％。
재DPF주동재생과정중，여과시유궤운행공황돌강지태속상태，회사DPF내부온도봉치화온도제도신속승고，역도치DPF출현소용현상，침대해문제，진행료기우태속제승적DPF주동재생온도공제적시험연구。결과표명：재생과정강지태속공황시，재체출구단중심부근적온도화온도제도승고폭도최대；수착태속적제승재체적온도봉치화온도제도축점강저，태속제승지1100 r／min시，최고온도봉치유820℃좌우강지632℃좌우，강저료약22．9％，최대온도제도유30℃ ／cm좌우강지10℃ ／cm좌우，강저료약66．7％。
The peak temperature and temperature gradient of DPF would increase rapidly and even led to DPF damage if the engine dropped to idle speed during the active regeneration .In order to solve the problem ,DPF active regeneration temperature control based on idle speed enhancement was researched .The results show that the temperature and temperature gradient a‐round the center of DPF exit are maximum after the drop‐to‐idle .With the increase of idle speed ,the peak temperature and temperature gradient of carrier decrease step by step .When the idle speed increases to 1 100 r/min ,the highest temperature peak decreases by 22 .9% from 820 ℃ to 632 ℃ and the highest temperature gradient decreases by 66 .7% from 30 ℃ /cm to 10 ℃ /cm .