What are the existing vehicle leak detection methods and what are their strengths and weaknesses?
现有的车辆漏电检测方法有哪些，有哪些优缺点？
The major methods include: Fluorescent Leak Detection Employs an ultraviolet or UV/blue light inspection lamp and fluorescent dyes to find even the smallest leaks quickly and easily. It locates multiple leaks and those not found by any other method. Its lack of disadvantages explains why it is the most popular leak detection technique. In addition to diagnostics, it is the only preventive/programmed maintenance method that detects all refrigerant and fluid leaks. Visual Inspection This labor-intensive procedure is very time-consuming except for the largest, most obvious leaks. Some people lay newspaper down to try to locate the general area of the leak. They will check the color of the fluid to try to identify what system it is coming from, i.e., red for transmission fluid, green for coolant, etc. However, it’s often difficult to pinpoint the exact source. Cannot be used for refrigerant leaks or for small leaks which evaporate right away. It’s difficult to detect clear liquids. Soapy Water and Bubble Solutions Although it’s inexpensive, this method has a number of serious drawbacks. In addition to being very time-consuming, it is not applicable to oil, hydraulics, transmissions and fuel. Only for refrigerant leaks. Talcum Powder Spraying foot powder on and around a suspect area may help you to find the leak if you’re lucky. But don’t run the engine, or you’ll make a real mess. This powder can also foul up carburetors. Only for oil leaks. Ion Detector (“Sniffer”) Detects only the general area of a refrigerant leak, not the exact location.This fragile device does not withstand hard use. In addition, it does not operate well in humid conditions. Only for refrigerant leaks. Compressed Air Used in water-cooling systems, it can damage hoses, radiators, and other components. It can actually cause additional leaks and enlarge existing ones. Only for coolant leaks.
主要方法包括： 荧光检漏 采用紫外线或紫外线/蓝光检测灯和......。 荧光染料 以快速、轻松地找到即使是最小的泄漏。它可以定位多种泄漏和其他任何方法都无法发现的泄漏。它没有任何缺点，这也解释了为什么它是最受欢迎的检漏技术。除了诊断外，它是唯一能检测所有制冷剂和液体泄漏的预防性/程序化维护方法。 视觉检查 这种劳动密集型的程序非常耗时，除了最大、最明显的泄漏。有些人将报纸铺在地上，试图找到泄漏的大致区域。他们会检查液体的颜色，试图确定它来自什么系统，例如，红色代表变速器油，绿色代表冷却液等。但是，往往很难确定准确的源头。不能用于制冷剂泄漏或立即蒸发的小泄漏。很难检测到透明液体。 肥皂水和泡沫解决方案 虽然价格便宜，但这种方法有很多严重的缺点。除了非常耗费时间外，还不适用于机油、液压、变速箱和燃油。只适用于制冷剂的泄漏。 滑石粉 在可疑区域及周围喷洒足粉，如果你运气好的话，可能会帮助你找到泄漏点。但不要运行发动机，否则会弄得一团糟。这种粉末也会弄脏化油器。只适用于漏油的情况。 离子探测器("嗅探器") 只检测制冷剂泄漏的大体区域，而不是准确的位置.这种脆弱的装置不能经受艰苦的使用。此外，它在潮湿的条件下也不能很好地工作。只适用于制冷剂泄漏。 压缩空气 在水冷系统中使用，会损坏软管、散热器和其他部件。实际上，它可能会导致额外的泄漏，并扩大现有的泄漏。仅用于冷却液泄漏。