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首页> 外文会议>European Automotive Congress >SECONDARY SAFETY OF A CNG-RETROFITTED VEHICLE RESULTS OF TWO COMPARED REAR-END CRASH TESTS
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SECONDARY SAFETY OF A CNG-RETROFITTED VEHICLE RESULTS OF TWO COMPARED REAR-END CRASH TESTS

机译：CNG改装车辆的二次安全性两种后端碰撞试验

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Rising fuel prices and a changed attitude towards environmental concerns have resulted in an increasing demand for alternative forms of fuel for vehicle propulsion. In particular, the registration figures of vehicles powered with compressed natural gas (CNG) and liquefied petroleum gas (LPG) show strong growth rates in Germany. Customers are interested in both, vehicles originally equipped by the manufacturer and vehicles which are retrofitted. To find out more about the crash performance of retrofitted cars regarding the integrity of the tank system and the secondary safety of the occupants, DEKRA Accident Research carried out two rear-end crash tests in accordance with the standard FMVSS 301. A CNG retrofitted estate car was used for these tests together with a conventional reference vehicle of the same make and model. The integrity of the tank and fuel system as well as the function of its valves and the influence of the retrofitted installations to the secondary safety of the occupants have been tested in comparison to the reference vehicle. As a result of the tests, both the conventional and the alternative fuel installations were not leaking and the safety valves of the CNG system shut down as intended. All the components necessary to turn the gas flow off manually remained accessible and capable of working. However, the gas bottle mounted behind the rear seat was pushed forward during the collision and resulted in a clearly increased loading of the chest of the dummies sitting on the rear seats. The crash test showed that the fire-risk of a CNG converted car does not exceed the fire-risk of the conventional car. However, to minimise the risk of rear-seat passengers some optimisations concerning the position of the built-in gas bottle and an additional cushioning may be options for further improvements.
机译：燃料价格上涨和改变环境问题的态度导致了对车辆推进的替代形式的燃料的需求越来越大。特别是，具有压缩天然气（CNG）和液化石油气（LPG）的车辆的登记数字显示出德国的强劲增长率。客户对两者的车辆都感兴趣，最初由制造商和车辆的车辆进行改装。要了解有关改装车辆的碰撞性能，关于罐系统的完整性以及乘员的二次安全性，Dekra意外研究根据标准的FMVSS 301进行了两个后端碰撞测试。CNG改装庄园汽车用于这些测试与相同的制作和模型的常规参考车辆一起使用。与参考车辆相比，已经测试了罐和燃料系统的完整性以及其阀门的功能以及改装装置对乘员的二次安全的影响。由于测试的结果，传统和替代燃料装置都没有泄漏，CNG系统的安全阀按预期关闭。使气体流动所需的所有组件都可以手动仍然可访问和能够工作。然而，安装在后座后面的气瓶在碰撞期间向前推动，并导致坐在后座上的假人的胸部的清晰增加。碰撞试验表明，CNG转换车的火灾风险不会超过传统汽车的火灾风险。然而，为了使后座乘客的风险最大限度地减少有关内置气瓶的位置的一些优化以及额外的缓冲可以是进一步改进的选择。

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