According to the principle of weight loss of oil caused by the combination of soot and oxygen under high temperature, the soot content in engine oil can be determined by Thermogravimetric Analyzer.

• 根据内燃机油中的烟炱在高温下与氧气结合而引起失重的原理,利用热重仪来测定内燃机油中烟炱含量,并用此法对行车试验油进行了监测。