小型直喷柴油机循环变动及影响因素分析  

Study of Cycle-to-Cycle Variation and Influencing Factor on Small DI Diesel Engine

作　　者：闫伟[1] 张浩[1] 路剑峰[1] 赵荣泳[1] 

机构地区：[1]同济大学电信工程学院,上海200092

出　　处：《车用发动机》2003年第3期15-17,共3页Vehicle Engine

摘　　要：研究了采用低旋流进气,浅ω型燃烧系统的SD2100直喷柴油机的循环变动及其影响因素,分析了标定工况下的最高燃烧压力(P_(max))及其所在时刻(φ_A)、最大压力升高率(λ_p)及其出现时刻(φ_B)、平均指示压力(P_i)的循环变动;对供油系统中的供油提前角(θ_(fa))、启喷压力(P_(jo))及喷油嘴孔径(D)等参数进行调整,分析了对循环变动的影响,并综合燃油经济性指标,得到最优匹配。The characteristics of operating cycle variations for shallow-ω-type combustion system on SD2100 diesel engine are tested and measured. The analysis on the cycle-to-cycle variation of the peak pressure and angle- pmax, A , the largest rising rate of pressure and angle- λp, B,the average instructing pressure- pi on specific performance are studied.Then influences of cycle-to-cycle variation are analyzed when the fuel supply system parameters such as the fuel supply time-θfs,the pressure of injection- pjo ,the nozzle hole are adjusted, concern to the specific fuel consumption,the optimum match is got.

关 键 词：循环变动 供油系统 浅ω型燃烧系统 柴油机 

分 类 号：TK421.2[动力工程及工程热物理—动力机械及工程]