增压汽油机掺烧甲醇裂解气的一维仿真  

One-Dimension Simulation of Dissociated Methanol Gas Blended into Turbocharged Gasoline Engine

作　　者：王亮[1] 蒋炎坤[1] WANG Liang;JIANG Yankun(Energy and Power Engineering School, Huazhong University of Science and Technology, Wuhan 430074, China)

机构地区：[1]华中科技大学能源与动力工程学院

出　　处：《内燃机与动力装置》2019年第2期18-22,共5页Internal Combustion Engine & Powerplant

基　　金：湖北省技术创新重大专项(2016AAA045)

摘　　要：以增压汽油机为研究对象,利用GT-Power建立汽油机仿真模型,对掺烧甲醇裂解气发动机的动力性和经济性进行仿真分析。结果表明:外特性工况下,随着甲醇裂解气替代比增大,各转速下发动机扭矩与当量燃油消耗率均下降,替代比为30%时,发动机扭矩最大降幅为8.6%,当量燃油消耗率最大降幅为5.5%;转速一定且输出扭矩相同时,掺烧甲醇裂解气可提高发动机的经济性,替代比为30%时,当量燃油消耗率最大降幅为6.1%;裂解气替代比一定,汽油机采用进气增压后外特性工况下的当量燃油消耗率较非增压时有所下降。A turbocharged gasoline engine simulation model is established by GT-Power. The dynamic and economic performance of the gasoline engine under the condition of dissociated methanol gas are simulated and analyzed. The results show that under the external characteristic condition, with the increase of dissociated methanol gas substitution ratio, the engine torque and equivalent fuel consumption rate decrease at various speeds. When the substitution ratio is 30%, the maximum decrease of engine torque and equivalent fuel consumption is 5.5%. Under the operating condition in which the speed and output torque are the same, the engine economy of dissociated methanol gas is better than that of the original engine. When the substitution ratio is 30%, the maximum decrease of the engine′s equivalent fuel consumption is 6.1%. Under the same dissociated methanol gas substitution ratio, when the gasoline engine adopts turbocharging, the fuel consumption rate under the external characteristic condition is lower than that under the non-turbocharging condition.

关 键 词：汽油机 增压 甲醇裂解气 一维仿真 动力性 经济性 

分 类 号：TK411[动力工程及工程热物理—动力机械及工程]