汽车发动机启停时具有半主动阻尼拉杆的动力总成悬置系统研究

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摘要提出减小汽车发动机启停时动力总成和整车的振动的三种策略。考虑增加悬置系统的阻尼可以有效的减小发动机启停时的振动，本文设计并开发了一款半主动阻尼拉杆。本文建立了包含半主动阻尼拉杆的整车十三自由度动力学模型，提出了发动机启停时基于动力总成和整车振动的动态响应评价指标和计算方法。基于动力总成悬置系统的设计方法，对半主动阻尼拉杆的安装位置和外通道的孔径进行了优化计算。根据力的分担方法，通过对动态响应评价指标的计算，对半主动阻尼拉杆活塞孔径的尺寸和数量进行了计算分析。通过试验对比分析了在发动机启动及怠速时，不加半主动阻尼拉杆和加半主动阻尼拉杆时座椅导轨的纵向加速度值，验证文中发动机启停时半主动阻尼拉杆设计方法的有效性。

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	王道勇
	李学军
	蒋玲莉
	罗陆锋
	肖冬明

关键词 ：发动机启停, 动力总成悬置系统, 十三自由度模型, 半主动阻尼拉杆, 动态响应评价指标

Abstract：This study proposed three strategies for reducing the powertrain and vehicle body vibration during the start and stop process of the engine. It is considered that increasing the damping of the mounting system can effectively reduce the engine start and stop vibrations, this paper developed a semi-active hydraulic damping strut (HDS). The study established a 13 DOFs dynamic model of the vehicle with semi-active HDS, and presented the dynamic response evaluation index and calculation method of the vibration of the powertrain and vehicle. The installation position of the semi-active HDS and the external channel size are optimized based on the design method of the powertrain mounting system. The size and quantity of the piston hole of the semi-active HDS are calculated and analyzed according to the calculation results of dynamic response evaluation index based on the force sharing method. The acceleration of the seat rail with and without semi-active HDS are compared experimentally in the process of engine start and at engine idle speed, which demonstrated the effectiveness of the proposed semi-active HDS design method.

Key words： Engine start and stop Powertrain mounting system 13DOFs model Semi-active hydraulic damping strut (HDS) Dynamic response evaluation index

收稿日期: 2021-01-06 出版日期: 2022-05-28

引用本文:

王道勇，李学军，蒋玲莉，罗陆锋，肖冬明. 汽车发动机启停时具有半主动阻尼拉杆的动力总成悬置系统研究[J]. 振动与冲击, 2022, 41(10): 252-259.
WANG Daoyong, LI Xuejun, JIANG Lingli, LUO Lufeng, XIAO Dongming. Vibration reduction of a powertrain mounting system by using semi-active hydraulic damping strut during engine start and stop. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(10): 252-259.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I10/252

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