加装防爆组件对防爆柴油机性能的影响

Effect of the Explosion-proof Components on Flameproof Diesel Engine Performance

矿用防爆柴油机作为无轨辅助运输车辆的动力装置有广阔的应用空间,但在进排气系统中加装防爆装置使得进排气阻力增加,发动机动力经济性恶化。对某型防爆柴油机原机与加装防爆组件分别进行台架试验得出:在防爆柴油机排气系统中增加防爆组件后,排气背压有较大幅度增加,动力性下降,燃油消耗率增加。排气系统中加装水洗箱小负荷运行时对CO、NO_x和PM排放影响不大,大负荷时三种排放均有明显增加;而加装全部防爆部件后,进排气系统阻塞严重,CO、NO_x和PM排放平均增幅分别为33.33%、15.08%、和53.23%。外特性排放测试结果表明,加装全部防爆部件后CO、NO_x和PM排放增幅较大,防爆柴油机性能严重恶化。

Mine flameproof Diesel engine as auxiliary transport vehicles powered device has broad space for development,but installation of explosion-proof components in the intake and exhaust system increase intake and exhaust resistance and the dynamic economics deteriorate. The bench tests of the original engine and installation of explosion-proof modified engine were carried out. Experimental results show that,after installing the explosion-proof components in the exhaust system,the back-pressure rises up sharply,power decreases and specific fuel consumption increases. The water tank in exhaust system has little effect on CO,NOxand PM emissions at low load operating,and has significantly increases at high load operating. While installed all explosion-proof components the exhaust system clogs seriously,and the average increase of CO,NOxPM emissions are 33. 33%,15. 08% and53. 23%,respectively. The external characteristics of emissions showed that,CO,NOxand PM emissions increase significantly and engine performance seriously deteriorates when install all explosion-proof components.