CAJ | 학술논문

由于国家防爆柴油机标准的特殊要求，防爆柴油机与普通车用柴油机的进、排气歧管在结构上区别很大，有些防爆柴油机进、排气歧管采用焊接结构，流通阻力大，通过流体分析软件分析并优化防爆柴油机进、排气歧管的流道，减小进排气阻力，减小能量损失。并通过发动机台架试验验证歧管结构优化前后的防爆柴油机性能与排放。试验结果表明：防爆进、排气歧管优化后，扭矩平均增加1.38%；功率平均增加4.02%；油耗率平均下降1.05%；进气流量平均增加1.97%；CO排放量平均下降38.82%；NOX排放量平均下降5.81%，优化后的防爆进、排气歧管使防爆柴油机的各项性能得到提升。
유우국가방폭시유궤표준적특수요구，방폭시유궤여보통차용시유궤적진、배기기관재결구상구별흔대，유사방폭시유궤진、배기기관채용한접결구，류통조력대，통과류체분석연건분석병우화방폭시유궤진、배기기관적류도，감소진배기조력，감소능량손실。병통과발동궤태가시험험증기관결구우화전후적방폭시유궤성능여배방。시험결과표명：방폭진、배기기관우화후，뉴구평균증가1.38%；공솔평균증가4.02%；유모솔평균하강1.05%；진기류량평균증가1.97%；CO배방량평균하강38.82%；NOX배방량평균하강5.81%，우화후적방폭진、배기기관사방폭시유궤적각항성능득도제승。
Due to the special requirements of the national standard, the explosion-proof diesel engine and ordinary diesel engine has big difference in the inlet and exhaust manifold structures. Some of the inlet and exhaust manifold are the welding structure, the resistance is big. The inlet and exhaust manifold is analyzed and optimized by software in the paper, to reduce exhaust resistance and the energy loss. Through the engine bench test and contrast into the exhaust manifold explosion-proof engine performance and emissions of external characteristic before and after the optimization. Test results show that the explosion protection into the exhaust manifold after optimization, the torque has increased the average torque increase by 1.38%;The average power increase by 4.02%;The average fuel consumption rate decline by 1.05%;Air intake flow average increase by 1.97%;CO emissions an average decline was 38.82%;NOx emissions by an average decline was 5.81%, the optimized explosion protection into the exhaust manifold to the comprehensive performance of diesel engine was promoted.