ISO 16247:2004规定了一种氦试验方法，用于检测和定位装有内燃机的道路车辆排气系统中的气体泄漏，以提高排气测量的质量。在此过程中，它完成了ISO 3929、适用法规和ISO 13556（取决于检测泄漏率）的要求。该方法特别适用于汽车车间、汽车和排气零件制造商的生产线末端、废气排放测试前的实验室以及测试和诊断站。

ISO 16247:2004 specifies a helium test method for detecting and localising gas leaks in the exhaust systems of road vehicles equipped with an internal combustion engine, in order to improve the quality of exhaust gas measurements. In doing so, it completes the requirements of ISO 3929, applicable regulations and, depending on the leak rate for detection, ISO 13556. The method is particularly applicable for use in automotive workshops, by end-of-line of automotive and exhaust parts manufacturers, in laboratories prior to exhaust emission tests, and in testing and diagnosis stations.