关于电动轮增压气直接注射发动机性能和排放的实验研究
Niu Zhao1, Zongfa Liu2, Li Wang1,3
1School of Mechanical Engineering, Wanjiang University of Technology, Ma'anshan 243031, China.
ACS omega
|July 1, 2024
概括
直接注入的发动机表现出极好的超薄燃烧,达到3.0的兰巴达极限. 优化的活塞环显著减少碳化合物 (HC) 和一氧化碳 (CO) 排放,接近零,以实现更清洁的能源未来.
科学领域:
- 内部燃烧发动机 内部燃烧发动机
- 其他替代燃料 替代燃料
- 燃烧科学 燃烧科学
背景情况:
- 是汽车发动机的一个有希望的零碳燃料.
- 关于引擎潜力,经济可行性和排放控制策略存在不确定性.
- 关于的超薄燃烧性能和减排数据有限.
研究的目的:
- 调查1.5L发动机中的燃烧特性和排放.
- 为了评估活塞环张力在形条件下对排放的影响.
- 评估气作为可行的低排放燃料来源的可行性.
主要方法:
- 使用1.5L发动机,配备了直接注射 (HDI) 系统和电压增压器.
- 在一系列精益条件下检查了燃烧和排放 (lambda限制高达3).
- 多种活塞环电压,分析它们对碳化合物 (HC) 和一氧化碳 (CO) 排放的影响.
主要成果:
- 在20°CA内实现了快速燃烧,并将兰巴达极限扩展到3以实现超薄操作.
- 随着发动机负载的增加,最大化的热效率达到40.8%.
- 氧化 (NOx) 排放在lambda 1.1时达到峰值,在lambda ~3.3时降至接近零的水平 (<5 ppm).
- 较高的活塞环张力降低了HC和CO排放到5ppm以下.
结论:
- 直接注入能可实现高效的超薄燃烧,具有高热效率.
- 引擎参数,如活塞环张力,可以优化以最大限度地减少HC和CO排放.
- 显示出作为内燃机近零排放燃料的潜力.
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