脉冲谐振电弧微波放电点火助燃装置研究

发布时间：2019-02-15 04:12

【摘要】：近年来,伴随着人们生活水平的提升,家庭在购买汽车的数量逐年增加,汽车在提供出行便利的同时,汽车所带来的污染依然不能忽视。汽车尾气对于城市中的大量污染占有很大的因素,其污染主要来源于燃油汽车尾气的排放,在喧嚣的城市生活中,无疑是值得人们思考并所要解决的问题。本文主要采用脉冲谐振电弧微波放电点火助燃装置来改善汽车等机动车辆点火装置,相比于传统的火花塞点火方式,微波点火的等离子体体积大,能可靠地迅速燃烧,且充分燃烧气体混合物,从而燃烧效率得到提升,降低尾气中有害气体的排放量。为了在大气压条件下获得稳定的低温微波放电等离子体,并将其应用于汽车发动机点火领域,本文所研制的脉冲谐振电弧微波放电点火助燃装置,其装置包括主要谐振高频高压电源和微波功率源相关装置。谐振高频高压电源控制电火花放电,可控电火花放电影响着微波体模放电进入微波场燃烧区助燃。实验表明,在采用一定数值的方波信号作用下,高频脉冲驱动固态高频开关,可实现高频高压的单极电火花放电,可控脉冲电火花瞬间点燃微波在整个燃烧区,实现体模放电,同步点燃燃料;微波放电使得燃料的利用率得到极大的提高并且减少废气中有毒气体的排放。通过实验结果和现象分析,可得出在给定的方波信号和微波功率的条件下,可得到理想的微波放电点火。
[Abstract]:In recent years, with the improvement of people's living standards, the number of families buying cars increases year by year. Automobile exhaust has a great influence on a large number of pollution in cities. Its pollution mainly comes from the emission of fuel vehicle exhaust. In the noisy city life, it is undoubtedly a problem that people should think about and solve. In this paper, the pulse resonant arc microwave discharge igniting device is used to improve the ignition device of automobile and other motor vehicles. Compared with the traditional spark plug ignition mode, the microwave ignition plasma is larger in volume and can burn rapidly and reliably. The combustion efficiency is improved and the emission of harmful gas is reduced. In order to obtain stable low-temperature microwave discharge plasma at atmospheric pressure and apply it to the field of automobile engine ignition, a pulsed resonant arc microwave discharge igniting device is developed in this paper. The device comprises a main resonant high-frequency and high-voltage power supply and a microwave power source related device. The resonant high frequency and high voltage power supply controls the electric spark discharge, and the controllable electric spark discharge affects the microwave bulk mode discharge entering the microwave field combustion zone. The experimental results show that the high frequency pulse drives the solid state high frequency switch under the action of a certain number of square wave signals. The high frequency and high voltage monopole spark discharge can be realized. The controlled pulse spark ignites the microwave in the whole combustion region and realizes the volume mode discharge. Synchronous ignition of fuel; Microwave discharge greatly improves the utilization of fuel and reduces the emission of toxic gases. Based on the experimental results and phenomenon analysis, the ideal microwave discharge ignition can be obtained under the given square wave signal and microwave power.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U463.64;TN015

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