吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (3): 760-766.doi: 10.13229/j.cnki.jdxbgxb20170121
孟育博1, 李丕茂2, 张幽彤2, 王志明1
MENG Yu-bo1, LI Pi-mao2, ZHANG You-tong2, WANG Zhi-ming1
摘要: 柴油机高压共轨系统中压力波动对喷油量偏差影响很大,为有效抑制喷油器入口压力波动,本文开展了带有阻尼孔和容腔的新型阻尼滤波器波动抑制的试验研究。通过均匀设计方法对比得出阻尼孔直径为0.4 mm、容腔体积为1720 mm3时滤波效果较好。在共轨压力分别为40、60、100 MPa,不同的喷射策略下进行了试验,结果表明:单次喷射条件下,脉宽为0.4 ms时,滤波器的添加可使共轨压力波动幅度减小51%~54%;多次喷射条件下,滤波器的添加可使预主喷模式下主喷油量波动幅度减小62.4%~71%;主后喷模式下后喷油量波动幅度减小了86%~86.3%。滤波器的添加可以有效减小多次喷射油量偏差,为进一步优化燃油喷射系统的控制精度提供参考。
中图分类号:
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