In an ideal conditions, three-way catalytic converters have a structure that will convert almost all of the harmful exhaust emissions. However, these conditions are not valid for cold start and idle conditions. Especially in cold weather, people wait for a while at the idle speed even though it is not a good way to warm up the engine. In this period, since the required temperature to reach light-off values are not provided, the emission released to the environment is at the highest level. The effects of preheating of the catalytic converter have been investigated in order to minimize the exhaust gases emitted under cold and idle working conditions and to meet the Euro standards as soon as possible after the emission release starts. In this experimental study, preheating of 1060, 1253 and 1493 Watt energy was applied to the exhaust line before the three-way catalytic converter at the cold start and idle conditions. Preheating was started when the engine started running. In the experiments, temperature and emission values were obtained at the catalytic converter inlet and outlet at idle conditions (1000 rpm) for about 430 seconds. The effects of inlet temperatures of exhaust gases on HC and CO emission behavior and converter conversion efficiency were investigated. When 1060, 1253 and 1493 Watt preheating are applied to the exhaust line, the times for reaching the light-off for HC and CO emissions occur at 395, 295, 220 and 369, 277, 200 seconds, respectively. However, when preheating is not applied, the catalytic converter has not been able to reach the light-off within the specified time. Finally, the EURO VI standard could not be achieved for the specified period without preheating. However, when the preheating load was set to 1493 Watt, EURO VI standards were achieved at the end of 310 and 285 seconds preheating times for both HC and CO emissions.

在理想条件下，三元催化转化器的结构可以转化几乎所有的有害废气排放。但是，这些条件不适用于冷启动和怠速条件。特别是在寒冷的天气里，人们在怠速下等待一段时间，尽管这不是预热发动机的好方法。在此期间，由于未提供达到起燃值所需的温度，因此释放到环境中的排放量处于最高水平。对催化转化器预热的效果进行了研究，以最大限度地减少冷态和怠速工况下排放的废气，并在排放开始后尽快达到欧洲标准。在本实验研究中，预热 1060，在冷启动和怠速条件下，1253 和 1493 瓦的能量被施加到三元催化转化器之前的排气管上。发动机开始运转时开始预热。在实验中，在闲置条件 (1000 rpm) 约 430 秒的催化转化器入口和出口处获得温度和排放值。研究了废气入口温度对 HC 和 CO 排放行为和转化器转化效率的影响。当对排气管应用 1060、1253 和 1493 瓦预热时，HC 和 CO 排放达到点火时间分别发生在 395、295、220 和 369、277、200 秒。但是，在不进行预热的情况下，催化转化器无法在规定时间内达到点火状态。最后，如果没有预热，就无法在规定的时间内达到 EURO VI 标准。然而，当预热负载设置为 1493 瓦时，在 310 秒和 285 秒预热时间结束时，HC 和 CO 排放均达到了 EURO VI 标准。