对起燃特性评价试验中常用的起燃温度法和不常用的起燃时间法进行了对比分析。
A comparative analysis is carried out between common light-off temperature meth-od and uncommon light-off ties method for evaluating the light-off performance.
建立数学模型对催化转化器起燃温度特性曲线进行模拟，模拟结果与实验测量结果吻合较好。
A mathematical model was established to simulate the light-off performance of a catalytic converter. Simulation results and the experimental values are agreed well.
甲烷催化燃烧的目的是通过催化作用降低燃料的起燃温度，加深甲烷氧化程度，从而提高燃料利用率。
Methane combustion aims to reduce the fuel's initiate burning temperature by catalysis, then to intensify the methane oxidation, and finally to improve the fuel's utilization ratio.
发动机在冷起动阶段由于空气温度低、燃油雾化不好、催化剂未能达到起燃温度，因而hc和CO污染严重。
In the cold starting phase, because of the lower air temperature, the worse fuel atomization, and the catalyst temperature being below initiation temperature, HC and co emissions are high.
采用如低起燃温度催化剂、密耦催化剂、HC捕集器、二次空气注入和电加热催化剂等在内的排气后处理技术，可以有效地减少污染物尤其是HC的排放。
It may effectively reduce the HC emissions to use a catalyst with low light-off temperature, close-coupled catalyst, HC traps, second air injection and electrically heated catalyst.
试验研究了摩托车在EUIII测试循环工况下的排气温度变化，以及对于两种氧传感器起燃时间、陶瓷体温度变化、动态响应特性和排放的影响。
The exhaust gas temperatures rise and variation during EUIII test cycle and its impact on the light-off time, ceramic temperature, dynamic response behavior and emission results were studied.
模拟结果显示了起燃过程中催化转化器载体温度场以及气体浓度场的变化。
The result shows the change of its temperature field and concentration field in light-off course.
试验结果表明，催化转化器的位置距排气口近可提高排气温度，大大提高催化转化器的转化效率；推迟点火提前角和提高怠速转速均有利于使催化转化器进入快速起燃状态。
Experimental results show that the position of the converter nearer to the exhaust port, the retard ignition timing and the higher idle speed can promote the catalytic converter light-off.
试验结果表明，催化转化器的位置距排气口近可提高排气温度，大大提高催化转化器的转化效率；推迟点火提前角和提高怠速转速均有利于使催化转化器进入快速起燃状态。
Experimental results show that the position of the converter nearer to the exhaust port, the retard ignition timing and the higher idle speed can promote the catalytic converter light-off.
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