柴油机低温放电处理的微粒热重特性

以试验为基础,对低温放电处理后柴油机微粒的热重特性进行了研究。利用静电学理论设计了用来捕集柴油机微粒的低温放电反应器,并搭建了对比分析的试验台架。利用热重分析技术对柴油机微粒中可溶性有机物质和固体碳颗粒的含量进行了比较分析,发现低温放电反应可使微粒上可溶性有机成分发生不完全的化学反应。低温放电电压的变化是影响柴油机微粒中各成分含量的关键因素,随着放电电压的升高,低温放电反应器对微粒的捕集效率有所提高,柴油机微粒中可溶性有机成分的含量呈减小趋势。

Thermo-gravimetric Properties of Diesel Particulate Matter Treated by Non-thermal Electro-discharge

The thermo-gravimetric properties of PM treated by non-thermal electro-discharge were studied by the experimental method. A non-thermal electro-discharge reactor was designed to trap PM based on the electrostatic theory, and a test rig for comparison and analysis was built. The content of soluble organic and solid carbon particles in PM was compared and analyzed by thermo gravimetric technology. The test and the analysis result concluded that non-thermal electro-discharge reaction can make soluble organic fraction produce incompleteness chemistry reaction. Voltage change of non-thermal electro-discharge is the key factor to affect the PM composition. Collection efficiency of PM for non-thermal electro-discharge reactor increased and the content of soluble organic fraction in PM decreased along with the voltage increase of non-thermal electro-discharge.