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研究了国外在冷起动催化器起燃特性方面的现状，分析了冷起动特性评价实验方法的影响因素。参照１５工况测试时的排气温度变化，提出了冷起动催化器起燃时间特性评价的实验方法，并用该方法对 ３个催化器的起燃特性进行了评价。与起燃温度特性实验结果对比表明，该方法可以准确地评价催化器的起燃特性。
The present situation of the start-up characteristics of the cold-start catalytic converter in foreign countries was studied, and the influencing factors of the cold start characteristic evaluation test method were analyzed. According to the variation of exhaust gas temperature during the test of 15 working conditions, the experimental method for evaluating the start-up time characteristics of the cold-start catalytic converter was proposed. The ignition characteristics of the three catalytic converters were evaluated by this method. Compared with the experimental results of ignition temperature characteristics, this method can accurately evaluate the ignition characteristics of the catalyst.