高原地区小型沼气/柴油双燃料发动机的设计  

Design of Small Gas/diesel Dual-fuel Engine in Plateau Area

作　　者：李丽丽[1] 赵武云[1] 戴飞[1] 

机构地区：[1]甘肃农业大学工学院,甘肃省兰州市730070

出　　处：《农业装备与车辆工程》2015年第4期1-5,共5页Agricultural Equipment & Vehicle Engineering

基　　金："十二五"国家科技支撑计划项目"西北绿洲农牧循环技术集成与示范"(2012BAD14B10);"十二五"国家科技支撑计划项目"粮食作物农机农艺关键技术集成研究与示范(2013BAD08B01)

摘　　要：针对高原地区农用机械动力下降,沼气夏季剩余、冬季短缺的问题,在ZS1115单缸柴油机的基础上,设计出一种新型文丘里式混合器、双燃料供给调速机构,以净化沼气为主要燃料、少量柴油为引燃油量的压燃式沼气/柴油双燃料发动机;高原双燃料发动机功率问题实验研究表明,ZS1115原机压缩比17∶1就能达到的标定功率须将压缩比改装为19∶1时才能达到,否则发动机的动力性将不足;压缩比每增加1,功率升高约1 k W,符合高原地区对发动机的要求。Since agricultural machinery power declines in plateau areas, while biogas surplus in summer and shortage in winter,on the basis of ZS1115 single-cylinder diesel engine, a new type of compression ignition gas / diesel dual-fuel engine is designed, which adopts Venturi mixer and dual-fuel supply control mechanism,uses purified gas as main fuel, and a small amount of diesel oil as pilot fuel. Studies on plateau dual-fuel engine power problem have shown that ZS1115 original machine can achieve the nominal power at compression ratio of 17：1, while in plateau region, the ratio should be converted to 19 ∶1 to achieve the nominal power,otherwise the engine power will be insufficient;Every increase of 1 in compression ratio will increase about 1 k W in power, meeting the requirement of the engine in plateau area.

关 键 词：高原地区 双燃料 发动机 功率 压缩比 

分 类 号：S226.1[农业科学—农业机械化工程] S126[农业科学—农业工程]