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首页> 外文会议>International Symposium and Exhibition on Sophisticated Car Occupant Safety Systems; 20021202-04; Karlsruhe(DE) >DUAL STAGE PYROTECHNIC INFLATQR
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DUAL STAGE PYROTECHNIC INFLATQR

机译：双阶段烟火技术

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摘要

Investigation on dual stage pyrotechnic gas generator used to stage the inflation of an airbag in a vehicle occupant restraint system was studied. Different types of the two combustion chamber partitions of the inflator were proposed. A simulated model is developed to fit the tested data and the results were in good agreement. Major factors i.e. gas generant loads, delay time, partition volume etc. affecting the pressure-time curves were used to simulate the performances of a dual stage inflator made with stainless steel material.Dual stage pyrotechnic inflators were made through the use of two combustion chambers in either isolation or the second combustion chamber being within the first combustion chamber. Deployment modes may involve deployment of both stages at once or the first followed by the secondary at some later time to provide the desired gas delivery event. The investigation of a two-stage module containing of two squibs and boosters showed a broad variety of pressure-time curves achievable by time delayed initiation.An improved dual stage pyrotechnic inflator was accomplished. The inflator housing defines a first chamber containing a quantity of a first gas generant material ignitable to produce first combustion products, the second combustion chamber is within the first combustion chamber. The second chamber includes an novel exit orifice adapted to place the second combustion products in fluid communication directly to the common exit vents. In recent commercial dual stage inflators, the second combustion products are in contact with the contents of the first combustion chamber. The present improved dual stage inflator is designed to eliminate any vent holes in the periphery of the second chamber, it is possible to avoid autoignatron of the pyrotechnic materials within the second chamber upon thermal contact by the combustion products formed upon ignition of the pyrotechnic materials in the first chamber. Comparisons with others will be comment.
机译：研究了用于在乘员约束系统中调节安全气囊充气的双级烟火气体发生器。提出了充气机的两个燃烧室隔板的不同类型。开发了模拟模型以适合测试数据，并且结果吻合良好。影响压力-时间曲线的主要因素，如产气量，延迟时间，分配容积等，被用于模拟由不锈钢材料制成的双级充气机的性能。双级烟火充气机是通过使用两个燃烧室制成的处于隔离状态或第二燃烧室处于第一燃烧室内。部署模式可能涉及一次部署两个阶段，或者先部署第一个阶段，然后再部署一些随后的阶段，以提供所需的气体传输事件。对由两个爆管和助推器组成的两级模块的研究表明，通过延迟启动可以实现多种压力-时间曲线。完成了一种改进的双级烟火式充气机。充气机壳体限定第一腔室，该第一腔室容纳可点燃以产生第一燃烧产物的一定量的第一气体发生剂，第二燃烧腔室在第一燃烧腔室内。第二腔室包括新颖的出口孔，该新颖的出口孔适于使第二燃烧产物直接流体连通至公共出口孔。在最近的商用双级充气机中，第二燃烧产物与第一燃烧室的内容物接触。本发明的改进的双级充气机被设计成消除第二腔室周围的任何通气孔，有可能避免第二腔室内的烟火材料在被烟火材料燃烧时形成的燃烧产物热接触时自燃。第一个房间。与他人进行比较将成为评论。

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