中文摘要：

以氧气为气源，建立了基于低温等离子体（NTP）技术的废气再循环（EGR）冷却器再生系统，并分别在再生温度为18、60、90、120、150、200℃时进行了再生试验。通过测量EGR冷却器的轴向温度及再生过程中CO和CO2的体积分数，分析再生温度对EGR冷却器再生的影响。试验结果表明：在EGR冷却器再生过程中，再生温度为120、150℃时，EGR冷却器内部温升较大，放热量多，反应较为剧烈；当再生温度为90℃时，C2（CO中C的质量）达到较大值；当再生温度为120、150℃时，生成的CO2量较多，C2（CO2中C的质量）较大，而C12（COx中C的质量）在120℃时较大。总体而言，当再生温度为120℃时，EGR冷却器内部反应较为剧烈，积炭去除量较多，再生效果较好。

英文摘要：

Using oxygen as a gas source, a regeneration system of exhaust gas recirculation（EGR） cooler based on non-thermal plasma（NTP） technology was built to do an experimental study on regeneration at 18, 60, 90, 120, 150 and 200 ℃. By measuring the axial temperature distribution in the EGR cooler and the volume fraction of CO and CO2 generating in the process, the influence of temperature on the regeneration was investigated. The results indicate that the reaction is the most severe and releases the most heat at 120 and 150℃. Additionally, when the regeneration temperature is 90 ℃, Ca （the mass of C in CO） gets its peak. Besides that, a large amount of CO2 is produced and C2 （the mass of C in CO2 ） gets its peak at 120 and 150 ℃, while C12 （the mass of C in CO,） at 120 ℃. In general, the reaction inside the EGR cooler is the most severe, the most carbon deposition is removed and the regeneration effect is the best when the regeneration temperature is 120 ℃.