使用燃烧内镜检测使用汽油-醇混合物为燃料的汽油发动机的火焰特性
S Kumaravel1, C G Saravanan1, M Vikneswaran2
1Department of Mechanical Engineering, Annamalai University, Annamalainagar, Tamilnadu, India.
Scientific reports
|December 31, 2024
概括
像醇这样的高阶酒精在与汽油混合时可以提高火花点火发动机的性能. 添加醇会增加火焰的速度,提高燃烧效率并减少有害排放,如CO和HC.
科学领域:
- 燃烧科学是一种科学.
- 其他替代燃料 其他替代燃料
- 内部燃烧发动机的内部燃烧发动机
背景情况:
- 火花点燃 (SI) 发动机需要提高燃油效率和减少排放.
- 像醇这样的高阶酒精作为汽油替代品的研究不足.
- 以前的研究表明,醇-汽油混合物可以提高SI发动机的性能和排放.
研究的目的:
- 分析SI发动机中醇-汽油混合物的火焰特性 (速度和分布).
- 为了评估不同度的醇对气内燃烧的影响.
- 为了将火焰的行为与发动机性能和排放相关联.
主要方法:
- 五醇与汽油混合在10%,20%和30%的体积.
- 混合物在双汽油发动机中进行了测试,该发动机配备了多点喷油系统 (MPFI).
- 使用AVL Visio视野镜相机可视化内燃烧,以捕获火焰图像.
主要成果:
- 添加醇增加了火焰的速度和燃烧速度.
- 火焰强度和分布区域扩大,醇含量更高.
- 发动机性能有所改善,在充满负载时,30%醇混合物的制动热效率 (BTE) 提高了5.71%.
- 一氧化碳 (CO) 和碳化合物 (HC) 的排放量减少,而氧化 (NO) 的排放量增加.
结论:
- 醇-汽油混合物高达30%显示SI发动机的前景.
- 增加醇含量可以提高燃烧效率,发动机效率,并减少特定排放.
- 醇是一种可行的汽油添加剂,不需要对发动机进行修改.
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