柴油机喷油器各孔喷油规律循环波动测量分析  

Measurement Analysis on Cyclical Variation of Each Hole Injection Rate of Diesel Injector

作　　者：罗福强[1] 叶兵舰 董少锋[1] 崔慧峰[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《内燃机工程》2015年第6期124-129,共6页Chinese Internal Combustion Engine Engineering

基　　金：国家自然科学基金项目(51176068);江苏高校优势学科建设工程项目;江苏省博士创新基金项目(CXZZ12_0674)

摘　　要：基于喷油器各孔喷雾动量测试得到的各孔喷油规律,研究了各孔最大喷油率、各孔循环喷油量、喷油器总的循环喷油量及其循环波动随着喷油泵转速和循环油量的变化。研究结果表明:随着喷油泵转速的升高,以单位凸轮转角计各孔最大喷油率逐渐降低,各孔循环喷油量及喷油器总的循环喷油量逐渐增加,三者循环波动率均逐渐变小;随着喷油泵循环油量的增加,各孔最大喷油率逐渐变大,循环波动率逐渐减小。同一工况下喷油器总的循环喷油量波动幅度并不等于各孔循环喷油量波动幅度之和,且总的循环喷油量的波动率均小于各孔循环喷油量的波动率。The maximum injection rate, the quantity of fuel injection per cycle of each hole, the quantity of fuel injection per cycle of nozzle and their cyclical variation with pump speed and fuel injection quantity were studied by measuring multiple cycle spray momentum and calculating the injection rate of each hole of diesel injector nozzle. The results show that the fuel injection quantity in each cycle for both the nozzle and each hole are increased while the maximum injection rate per cam angle and their variation rate are deceased with the cam speed increasing. The maximum injection rate of each hole gradually increases and their variation rate gradually decreases with the quantity of pump fuel delivery per cycle increasing. The fluctuation of fuel injection quantity of the nozzle does not equal to the total one of every hole and the cyclical injection quantity variation of the nozzle is less than that of each hole in the same condition.

关 键 词：内燃机 柴油机 多孔喷油器 各孔喷油规律 循环波动 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]