研究了电感耦合高频等离子体原子发射光谱法在汽车液压助力转向系统故障诊断中的创新性应用。 通过电感耦合高频等离子体原子发射光谱法测定行驶里程分别为0.2～0.9万公里、 1.1～1.8万公里、 2.2～2.9万公里、 3.1～4.0万公里四批别克君威2.4液压助力转向油液中主要金属Fe, Cu, Al的含量, 建立别克君威2.4不同行驶里程数液压助力转向油液中主要金属含量的数据库。 研究发现了主要金属含量随着汽车行驶里程数上升而增加, 并且其正常含量在两条趋势线之间。 测定实车中液压助力转向油液中主要金属含量, 并与其数据库数值比对, 既可以判断液压转向系统的磨损状况, 及时维护, 避免行车事故, 也可以帮助汽车检测维修人员在不解体状态下诊断汽车液压转向系统的故障原因, 并且可以提高汽车维修质量, 降低汽车维修成本。

The authors studied the innovative applications of the inductively coupled plasma-atomic emission spectrometry in automotive hydraulic power steering system fault diagnosis. After having determined Fe, Cu and Al content in the four groups of Buick Regal 2.4 main metal power-steering fluid whose travel course was respectively 2~9 thousand kilometers, 11~18 thousand kilometers, 22~29 thousandkilometers, and 31~40 thousand kilometers, and the database of primary metal content in the Buick Regal 2.4 different mileage power-steering fluid was established. The research discovered that the main metal content increased with increasing mileage and its normal level is between the two trend lines. Determination of the power-steering fluid main metal content and comparison with its database value can not only judge the wear condition of the automotive hydraulic power steering system and maintain timely to avoid the traffic accident, but also help the automobile detection and maintenance personnel to diagnose failure reasons without disintegration. This reduced vehicle maintenance costs, and improved service quality.