基于传热学理论的汽车安全气帘保压用发生器研究

doi:10.19562/j.chinasae.qcgc.2022.11.015

汽车工程 ›› 2022, Vol. 44 ›› Issue (11): 1772-1778.doi: 10.19562/j.chinasae.qcgc.2022.11.015

所属专题：车身设计&轻量化&安全专题2022年

基于传热学理论的汽车安全气帘保压用发生器研究

单津晖¹,魏学哲¹(),景旭²

^1.同济大学汽车学院，上海　200092
^2.均胜汽车安全系统研发（上海）有限公司，上海　201615

收稿日期:2022-05-27 修回日期:2022-06-25 出版日期:2022-11-25 发布日期:2022-11-19
通讯作者: 魏学哲 E-mail:weixzh@tongji.edu.cn

Study on Inflator for CAB Pressure Maintaining Using Heat Transfer Theory

Philips Shan¹,Xuezhe Wei¹(),Victor Jing²

^1.School of Automotive Studies，Tongji University，Shanghai 　200092
^2.Joyson Safety Systems Technical Center （Shanghai） Co. ，Ltd. ，Shanghai 　201615

Received:2022-05-27 Revised:2022-06-25 Online:2022-11-25 Published:2022-11-19
Contact: Xuezhe Wei E-mail:weixzh@tongji.edu.cn

摘要/Abstract

摘要：

C-NCAP 2021版本颁布后，6 s保压侧面气帘的设计和开发成为挑战，本文旨在研究气帘关键部件之一的气体发生器。基于传热学理论，结合热力学等知识，把气体发生器给气帘的充气过程分成3个子过程，阐述了气体发生器对气帘保压过程的影响，详尽地梳理出气体发生器关键参数的作用和影响，进而通过理论和案例分析，得出如下结论：烟火式发生器并不适合于保压气帘；冷气式气体发生器产品竞争力不强；而价格上有优势的混合式气体发生器，只要其温度低于临界值，如450 K，就有可能满足气帘的保压要求。

关键词: 汽车安全气帘, 气体发生器, 6 s保压, 临界温度

Abstract:

After the promulgation of C-NCAP 2021， 6 seconds pressure maintaining requirement poses a challenge to the design and development of curtain airbag （CAB）. This paper aims to conduct a study on inflator， as one of the key components of CAB. Based on heat transfer theory with the knowledge of thermodynamics， the deployment process of CAB is divided into three sub-processes， the effects of inflator on the pressure maintaining process of CAB are expounded， and the role and influence of inflator’s key parameters are summed up in detail. It is concluded by theoretical analysis and case study that the pyrotechnic inflator is not suitable to pressure maintaining CAB， cold-gas inflator is weak in product competitiveness， while the hybrid inflator with competitive price can possibly meet the requirements of CAB in pressure maintaining as long as its temperature is lower than the critical one such as 450 K.

Key words: curtain airbag, inflator, 6 s pressure maintaining, critical temperature

单津晖,魏学哲,景旭. 基于传热学理论的汽车安全气帘保压用发生器研究[J]. 汽车工程, 2022, 44(11): 1772-1778.

Philips Shan,Xuezhe Wei,Victor Jing. Study on Inflator for CAB Pressure Maintaining Using Heat Transfer Theory[J]. Automotive Engineering, 2022, 44(11): 1772-1778.

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基于传热学理论的汽车安全气帘保压用发生器研究

Study on Inflator for CAB Pressure Maintaining Using Heat Transfer Theory

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