摘要
应用AVLBOOST软件结合经验公式对GW15汽油机进行了一维不稳定流动模拟计算。基于数值模拟结果,优化原汽油机排气歧管,并通过试验测得该发动机的扭矩、功率、燃油消耗率、空燃比、排气温度等参数加以分析验证。研究结果表明:优化后,最大扭矩增加了4.22 N.m;最大功率增加了3.06 kW;最低燃料消耗率在常用转速下降低了5.82 g/(kW.h)。
AVLBOOST software and empirical equations were applied to simulating GW15 gasoline onedimensional unsteady flow.Based on the numerical simulation results,the runners of exhaust manifold were optimized.The torque,power,specific fuel consumption,air-fuel ratio and exhaust temperature of the engine were compared by engine test and the optimization of the exhaust runners.The results showed that maximum torque is increased by 4.22 N.m.Maximum power is increased by 3.06 kW.Specific fuel consumption is reduced by 5.82 g / ( kW.h) at the range of common speed after optimization.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2013年第4期40-44,4,共5页
Journal of Henan University of Science And Technology:Natural Science
基金
河南省基础研究基金项目(092300410125)
汽车安全与节能国家重点实验室基金项目(KF11161)
长城汽车股份有限公司基金项目(GW4G152011)
关键词
汽油机
排气歧管
数值仿真
优化设计
gasoline engine
exhaust runner
numerical simulation
optimized design
