朱海荣,郭雪芳,邸智鹏,王钊

• 1:河北科技大学机械工程学院
• 2:河北拓普电气有限公司

摘要(Abstract)：

为了研究低温环境下柴油机不同喷油参数(喷孔个数、喷油夹角、喷油提前角)对缸内燃烧和排放性能的影响，建立某型号直喷式柴油机三维模型，对低温环境下柴油机不同喷油参数进行燃烧模拟。结果表明：喷油参数会对喷油持续期、燃油空间分布、燃烧室底部凹坑内涡旋、燃油喷雾的穿透距离和扩散角度、燃油与空气混合时间和混合效果等方面产生作用，从而影响到柴油机的燃烧和排放性能；喷孔个数为8、喷油夹角为150°、喷油提前角为18℃A BTDC(上止点前)时，柴油机在低温环境下可获得最佳动力性。研究得到了低温环境下喷油参数对柴油机燃烧和排放的影响机制，可为低温环境下柴油机喷油参数的优化提供参考。

关键词(KeyWords)： 内燃机工程;柴油机;喷油参数;燃烧模拟;低温环境

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52406087);; 教育部“春晖计划”合作科研项目(HZKY20220237);; 河北省自然科学基金(E202208009)

作者(Author): 朱海荣,郭雪芳,邸智鹏,王钊

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