摘要
为探索适用于氢内燃机的循环变动特性评价方法,在一台2.0,L进气道喷射式(PFI)氢内燃机试验平台上,开展不同工况条件下的氢内燃机性能试验,探讨不同转速、节气门开度、点火提前角和当量燃空比条件下,缸内最高燃烧压力pmax及其对应的曲轴转角θpmax、最大压力升高率dpmax及其对应的曲轴转角θdpmax与平均指示压力(IMEP)之间的相关性.结果表明:COVIMEP是评价PFI氢内燃机循环变动特性的最佳特征参数;高速、大负荷工况下,pmax和IMEP具有较强的相关性,pmax能够在一定程度上反映氢内燃机的循环变动特性;θpmax、dpmax和θdpmax与IMEP在较大工况范围内没有相关性,因此这些参数的循环变动系数不适合作为评价氢内燃机循环变动特性的特征参数.
The evaluation method on cycle variations of port-injection hydrogen engine （PFI-HICE）was made, and performance tests were conducted. Interdependency analysis ofp θpmax, dpmax and 0dpmax with IMEP was made at different speeds, throttle openings, ignition timings and equivalence ratios. Test results show that, COVIMEP is the best parameter to reflect the cycle variations of PFI-HICE. High interdependency between COVpmax and COVIMEP at high speed and heavy load. Pmax can be used to evaluate cycle variations of PFI-HICE. Little interdependency between Op dpmax, θdpmax and IMEP is oresented, thus these oarameters are improper for evaluating cycle variations of PFI-HICE.
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
2013年第2期133-138,共6页
Transactions of Csice
基金
国家自然科学基金资助项目(51276019)
关键词
氢内燃机
循环变动
评价方法
特征参数
hydrogen internal combustion engine
cycle variation
evaluation method
characteristicparameters
