相继涡轮增压系统对D6114型柴油机性能的影响  

Effects of Sequential Turbocharging System on Performances of D6114 Diesel Engine

作　　者：张哲[1] 王希波[1] 邓康耀[1] 

机构地区：[1]上海交通大学动力机械与工程教育部重点实验室

出　　处：《农业机械学报》2008年第5期30-35,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：总装"十一五"预研项目(项目编号:40402040107;62301020302);柴油机增压技术国家级重点实验室基金资助项目(项目编号:514510301)

摘　　要：在D6114型增压中冷柴油机上,分别采用原机增压器、大增压器、小增压器和同时使用大小2个增压器等4种方案,对柴油机的燃油消耗率和碳烟排放进行了试验。通过分析比较试验结果,提出大小涡轮相继涡轮增压方案,低速工况时小增压器单独工作,中高速工况时大小增压器并联运行。试验结果表明,采用大小涡轮相继增压系统在低速大负荷工况时,比原机燃油消耗率密度最多降低30g/(kW.h),排放烟度最多降低约22%,初步证实了车用柴油机采用相继涡轮增压技术效果良好。Experiments on sequential turboeharging system used on D6114 diesel engine were investigated. The brake specific fuel consumption and smoke emission of diesel engine were measured in four schemes： with the original turbocharger, with a small turbocharger, with a big turbocharger, with both small and big turboehargers. Then, a new turboeharging method named big and small turbo sequential turbocharging system was put forward by analyzing and comparing the experimental results. When the engine works at low speeds, only the small turboeharger works. Then, at the medium and high speed operation, both the big and the small turbochargers work in parallel. The experimental results showed that the brake specific fuel consumption was reduced about 30 g/（kW·h） and the maximum decreased value of smoke emission was approximately 22 % in low engine speed range. It was proved that the sequential turboeharging system can improve the performances of the vehicle diesel engine evidently.

关 键 词：柴油机 涡轮增压器 相继涡轮增压 性能 

分 类 号：TK421.8[动力工程及工程热物理—动力机械及工程]