作者：王海, 彭忆强, 韩志强, 张少朋
作者单位：西华大学交通与汽车工程学院 汽车测控与安全四川省重点实验室, 四川 成都 610039
关键词：多缸柴油机;瞬时转速;各缸一致性
摘要：
为使ECU通过提取瞬时转速完成发动机各缸一致性控制,提出每隔30 ℃A提取一个发动机瞬时转速,并以DK4A多缸柴油机为试验平台,测量发动机在1 600 r/min稳态工况下,不同负荷下常用的每隔6 ℃A和提出的每隔30 ℃A的瞬时转速。每隔30 ℃A得到的瞬时转速曲线能很好地表征瞬时转速的波动性,提取曲线上的特征参数,得到各缸一致性和每隔6 ℃A结论基本一致,说明每隔30 ℃A提取稳态工况下瞬时转速也能准确判断各缸一致性,节约ECU的运算资源。
Analysis the transient speed and the uniformity of multi-cylinder diesel engine
WANG Hai, PENG Yiqiang, HAN Zhiqiang, ZHANG Shaopeng
Key Lab of Automotive Measurement and Control and Satety of Sichuan Province, School of Transportation and Automotive Engineering, Xihua University, Chengdu 610039, China
Abstract: The transient speed of a crankshaft was used tocontrol the uniformity of each cylinder every 30 ℃A. Inexperiment, the transient speeds weremeasured under different loads at a steady-state condition of 1 600 r/min based on a DK4A multi-cylinder diesel engine every 6 ℃A and 30 ℃A. It is shown that, when the transient speedwas acquisitioned at the interval of 30 ℃A, the feature parameter can also be used to judge the uniformity of the cylinder. Therefore, the transient speed at the interval of 30 ℃A can be usedtoestimate the cylinder-by-cylinder uniformity so as to reduce the computation load of the electric control unit(ECU).
Keywords: multi-cylinder diesel engine;transient speed;cylinder-by-cylinder uniformity
2015, 41(8): 122-124,128 收稿日期: 2014-8-15;收到修改稿日期: 2014-10-8
基金项目: 四川省教育厅重点项目(11ZA284);四川省高校科技创新团队项目(KYTD201003)
作者简介: 王海(1988-),男,四川眉山市人,硕士研究生,专业方向为发动机电控。
参考文献
[1] 张立梅,刘卫国,吴波,等. 各缸工作不均匀的诊断研究[J].汽车工程,1996,18(5):309-314.
[2] 谢晓阳,乔新勇,刘建敏. 柴油机工作不均匀性的振动检测方法[J]. 噪声与振动控制,2013(3):79-83.
[3] 李建秋,欧阳明高,周明,等. 柴油机各缸工作不均匀程度对性能的影响分析[J]. 交通运输工程学报,2009,1(3):50-53.
[4] 董大伟,李辉伦,张兰芝,等. 用单缸熄火转速法测定柴油机各缸工作均匀性[J]. 检测·试验,2001(6):27-29.
[5] 樊新海,刘建敏,安钢,等. 基于排气噪声的坦克柴油机各缸工作不均匀性评价[J]. 内燃机学报,2004,22(4):363-366.
[6] 杜巍,刘福水. 多缸柴油机转速波动与燃烧不均匀性的相关性[J]. 农业机械学报,2010,41(2):17-20.
[7] Yang J G, Pu L J, Wang Z H,et al. Fault detection in a diesel engine by analyzing the instantaneous angular speed[J]. Mechanical Systems and Signal Processing,2001,15(3):549-564.
[8] Lamraoui M, Thomas M, Badaoui M E, et al. Indicators for monitoring chatter in milling based on instantaneous angular speeds[J]. Mechanical Systems and Signal Process ing,2013,44(2):72-85.
