基于喷雾特性及质量均匀性的油嘴喷孔加工一致性方法研究  

Method Evaluating Nozzle Spray Hole Manufacturing Consistency Based on Spray Characteristics and Uniformity

作　　者：高原[1] 黄魏迪[1] 高雅[1] 龚慧锋[1] 胡宗杰[1] 李理光[1] 

机构地区：[1]同济大学汽车学院,上海200092

出　　处：《内燃机工程》2012年第4期36-40,46,共6页Chinese Internal Combustion Engine Engineering

基　　金：国家"八六三"高技术研究发展计划项目(2008AA11A115);高等学校创新引智计划项目(B08019)

摘　　要：挑选2支不同的多孔商业化油嘴A、B,通过油嘴的喷雾及喷射燃油质量特性对油嘴的加工一致性及对称性展开试验研究。试验在燃料喷射压力60MPa、燃料喷射脉宽1 800μs条件下进行。研究结果表明:B油嘴各喷孔间差异系数相对A喷嘴较小,同时B喷嘴在喷雾形态的对称性及油嘴各喷孔喷射燃油质量均匀性也优于A喷嘴。基于油嘴喷雾及喷射燃油质量特性的喷孔加工一致性方法既相互佐证反映喷孔加工的一致性,又能评价油嘴喷雾形态的对称性及燃油质量分布的均匀性。Two commercial multi-hole nozzles A and B were selected for testing manufacturing consistency and symmetry by comparing spray characteristics and spray mass of each hole. The experiments were carried out under 60 MPa injection pressure and 1800 s spray duration. The research results show that spray spacial symmetry and spray uniformity of nozzle B are better than those of nozzle A. The nozzle manufacturing consistency test results by spray characteristics and by spray mass uniformity can be confirmed each other. These two kinds of methods can well evaluate nozzle manufacturing consistency.

关 键 词：内燃机 喷孔加工一致性 喷雾对称性 燃油质量一致性 

分 类 号：TK423.8[动力工程及工程热物理—动力机械及工程]