【摘要】 介绍了用垃圾填埋气(LFG)作燃料的发动机进行发电带来的巨大社会效益和经济效益。对一台水冷四冲程自然吸气式天然气发动机进行了改造,利用填埋气甲烷值高、抗爆性好的特点,将压缩比从8.6提高到11,功率和热效率增加。设计了一种新型低成本预燃室式燃烧系统,大大提高了燃烧速度,同时降低了排温。讨论了燃烧系统各种参数对填埋气发动机性能的影响。实验表明,采用新设计的预燃室燃烧系统后,发动机综合性能有较大的改善。更多还原

【Abstract】 The use of landfill gas(LFG)to generate electricity can bring us great social and economic benefits.A watercooled four stroke naturally aspirated natural gas engine is modified to improve its combustion procession.The compress ratio is increased from 8.6 to 11,resulting in a higher power and improving thermal efficiency.A lowcost newly designed prechamber is added to the engine so that combustion velocity is greatly enhanced and exhaust gas temperature is decreased much.The experiment results show that the engine performance is enhanced greatly when a newly designed combustion system is adopted.更多还原