主办:陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊:1976年

汽车实用技术 ›› 2022, Vol. 47 ›› Issue (24): 103-109.DOI: 10.16638/j.cnki.1671-7988.2022.024.019

• 测试试验 • 上一篇    

多次预喷射的柴油机燃烧噪声控制实验

姜顺超 1,张校峰 2,王晓洋 2,许 杰 2,姜智超 2   

  1. 1.青岛海尔电冰箱有限公司;2.广西科技师范学院
  • 出版日期:2022-12-30 发布日期:2022-12-30
  • 通讯作者: 姜顺超
  • 作者简介:姜顺超(1992—),男,硕士,工程师,研究方向为机械工程,E-mail:1172797192@qq.com。
  • 基金资助:
    广西科技师范学院科研基金项目(GXKS2020QN030);广西高校中青年教师科研基础能力提升项目(2020 KY23017)。

Experimental on Combustion Noise Control of Diesel Engines Employing the Multiple Pilot Fuel Injection Technology

JIANG Shunchao1 , ZHANG Xiaofeng2 , WANG Xiaoyang2 , XU Jie2 , JIANG Zhichao2   

  1. 1.Qingdao Haier Refrigerator Company Limited; 2.Guangxi Science & Technology Normal University
  • Online:2022-12-30 Published:2022-12-30
  • Contact: JIANG Shunchao

摘要: 为了降低柴油机怠速状态下的燃烧噪声,分析多次预喷射技术对燃烧噪声的影响。在 半消声室内对某直列四缸高压共轨柴油机进行测试,根据实验数据,分析两次预喷射策略对 缸压、放热率、压力升高率、燃烧噪声的影响。实验测试结果表明,两次预喷射策略可以有 效降低柴油机的放热率及压升率的最高值,从而使柴油机燃烧噪声平均降低了 5.2 dB,实车 噪声也有所减小,缸压频谱在中高频率范围内的幅值也有所减小,此预喷策略最终也应用在 了某型号的柴油机上。

关键词: 柴油机怠速;预喷射;缸压;压升率;燃烧噪声;噪声控制

Abstract: In order to reduce combustion noise of diesel engine in idle state,a study on the effect of the multiple pilot fuel injection technology on the combustion noise was conducted. A four-cylinder high pressure common rail diesel engine with inline sensors was tested in a semi-anechoic room. According to the experimental data, the effects of the double pilot fuel injection technology on the cylinder pressure, the heat release rate,the pressure rise rate, the combustion noise were analyzed. The test results showed that the double pilot fuel injection technology can reduce the maximum value of the heat release rate and pressure rise rate of the diesel engine, so that the combustion noise of the diesel engine was reduced by an average of 5.2dB. The real vehicle noise was also reduced. The spectrum of the cylinder pressure decreased in the medium to high frequency range. This multiple pilot fuel injection technology was finally applied to this type of diesel engine.

Key words: Idle state of diesel engine; Pilot fuel injections; Cylinder pressure; Pressure rise rate;Combustion noise; Noise control