EXHAUST GAS HEAT RECOVERY THROUGH SECONDARY EXPANSION CYLINDER AND WATER INJECTION IN AN INTERNAL COMBUSTION ENGINE
作者: Ali Nassiri Toosi Amir Hassan Kakaee Hazhir Ebne-Abbasi
刊名: Thermal Science, 2017, Vol.21 (1B), pp.729-743
来源数据库: Society for Thermal Engineers of Serbia
DOI: https://doi.org/10.2298/TSCI150915282N
关键词: internal combustion enginesecondary cylinderwater injection waste heat recovery
原始语种摘要: To enhance thermal efficiency and increase performance of an internal combustion engine, a novel concept of coupling a conventional engine with a secondary 4-stroke cylinder and direct water injection process is proposed. The burned gases after working in a traditional 4-stroke combustion cylinder are transferred to a secondary cylinder and expanded even more. After re-compression of the exhaust gases, pre-heated water is injected at top dead center. The evaporation of injected water not only recovers heat from exhaust gases, but also increases the mass of working gas inside the cylinder, therefore improves the overall thermal efficiency. A 0-D/1-D model is used to numerically simulate the idea. The simulations outputs showed that the bottoming cycle will be more efficient at higher...
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关键词翻译
关键词翻译
  • cylinder 圆柱
  • engine 发动机
  • compression 压缩
  • efficient 有用的
  • combustion 燃烧
  • supercharged 增压的
  • thermal 热的
  • bottoming 底部砰击
  • numerically 数字上
  • secondary 二次的