插电式混合动力汽车加速噪声分析和优化
 王家辉,龙海威,刘渊,余淼
(广州汽车集团股份有限公司 汽车工程研究院,广东 广州 511434)
摘要:介绍了插电式混合动力汽车的动力系统结构形式和工作模式。针对增程模式下加速噪声大的问题,通过对噪声的频谱特征的分析,提出了优化发动机扭矩来降低加速噪声的方法。试验结果表明:优化发动机扭矩后,总声压级降低了6 dB(A),二阶次噪声声压级降低了10 dB(A),总声压级和二阶次噪声声压级差值由优化前的2 dB(A)增大到了6 dB(A),主观评价轰鸣音完全消除,噪声水平可以接受。
关键词:插电式混合动力汽车;动力系统构型;加速噪声;发动机扭矩优化
中图分类号:U467.1+1 文献标志码:A doi:10.3969/j.issn.1006-0316.2018.10.004
文章编号:1006-0316 (2018) 10-0016-04
Analysis and Optimization on Speedup Noise in Plug-in Hybrid Electric Vehicle
WANG Jiahui,LONG Haiwei,LIU Yuan,YU Miao
( Automotive Engineering Institute, Guangzhou Automobile Group Co., Ltd., Guangzhou 511434, China )
Abstract:The aim of this paper was to analyze and optimize the speedup noise in Plug-in Hybrid Electric Vehicle(PHEV). Firstly, the structure and working mode of power system for PHEV were introduced in this paper. And then, based on the analysis of the noise spectrum characteristics, a method was proposed to decrease the acceleration noise in the extended range mode by optimizing engine torque. The test results show that the overall sound pressure level is decreased by 6 dB(A) and the 2nd sound pressure level is decreased by 10 dB(A) while the engine torque is optimized. The difference value between the overall sound level and the 2nd sound level is increased from 2 dB(A) to 6 dB(A). The booming sound had been eliminated completely and the sound level is acceptable.
Key words:plug-in hybrid electric vehicle;power system structure;acceleration noise;engine torque optimization
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收稿日期:2018-01-03
基金项目:国家重点研发计划(2017YFB0103300)
作者简介:王家辉(1989-),男,山东德州人,硕士研究生,主要研究方为新能源汽车整车控制器软件标定、新能源汽车振动噪声控制。
 

 

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