李笑杰;邓俊;李梦迪;姚宇航;李理光;

• 1:同济大学汽车学院
• 2:同济大学中德学院

摘要(Abstract)：

基于一台装有汽油机颗粒物捕集器(GPF)的1.4T进气道燃油喷射(PFI)发动机研究了发动机在不同负荷下的原始颗粒物排放特性和不同灰分载量对GPF过滤性能的影响。结果表明:在中小负荷下,发动机排放的颗粒物主要为核模态,在大负荷下,则存在粒径10～25 nm的核模态和100～200 nm的积聚模态颗粒物;灰分载量对GPF的工作特性有较大影响,灰分载量为0的GPF对颗粒物的捕集率约为85%,而灰分载量为5 g/L的GPF捕集率达97%;发动机排气背压、温度和燃油消耗率随GPF灰分载量的增加而提高,灰分载量为20 g/L时的燃油消耗率相比灰分载量为0时提高了3%～7%。

关键词(KeyWords)： 进气道燃油喷射;灰分;粒径;捕集率;汽油机颗粒物捕集器

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（51761135105）;; KSPG教席基金项目

作者(Authors): 李笑杰;邓俊;李梦迪;姚宇航;李理光;

DOI: 10.19620/j.cnki.1000-3703.20200036

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