摘要
介绍了氢内燃机试验分析系统,对比和分析了不同工况下的氢内燃机缸内燃烧特性,总结了不同运行参数下氢内燃机的燃烧特点。试验结果表明:由于燃烧速度较高,氢内燃机可以在上止点或上止点后点火,此时指示效率下降并不明显。在中低转速时,氢内燃机可以适应不同转速,能够及时燃烧。油门开度对氢内燃机的影响很大,小油门开度时残余废气多,氢气的浓度降低,使氢气燃烧速度受到影响,指示热效率降低,循环变动增加。
A test system of hydrogen fueled engine was introduced and the combustion characteristics of hydrogen fueled engine were analyzed, and the combustion characteristics under various operating conditions were summarized. The results show that due to the higher combustion speed of hydrogen, the hydrogen fueled engine can spark later, even at TDC or after TDC, and the indicated thermal efficiency does not decrease obviously. At low and middle speed, the engine has better speed compatibility and can realize better combustion. The load has a greater effect on the engine performance. When the load is smaller, the engine has no enough charge but has more residual gas, which results in lower combustion speed, so that the ITE decreases and the cycle-to-cycle combustion variation increases.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2008年第1期29-33,共5页
Chinese Internal Combustion Engine Engineering
关键词
内燃机
氢气
燃烧
排放
IC engine
hydrogen
combustion
emission
