柴油机DPF驻车再生过程中缸内后喷策略试验研究  

Experimental Study on In-cylinder Post-injection Strategy During Diesel DPF Parking Regeneration

作　　者：刘西文[1] 王梦华[1] 郭楠[1] 张一[2] 刘庆伟 葛琰[1] LIU Xiwen;WANG Menghua;GUO Nan;ZHANG Yi;LIU Qingwei;GE Yan(State Key Laboratory of Power System of Tractor,Luoyang Tractor Research Institute Co.,Ltd.,Luoyang 471039,China;Strategic Procurement Center,YTO Group Corporation,Luoyang 471039,China)

机构地区：[1]拖拉机动力系统国家重点实验室,洛阳拖拉机研究所有限公司,河南洛阳471039 [2]中国一拖集团有限公司战略采购中心,河南洛阳471039

出　　处：《拖拉机与农用运输车》2020年第3期27-30,37,共5页Tractor & Farm Transporter

基　　金：拖拉机动力系统国家重点实验室项目(SKT2019004)。

摘　　要：在一台非道路国四用高压共轨柴油机上,利用试验台架研究了柴油机颗粒捕集器(diesel particulate filter,DPF)驻车再生过程中缸内后喷策略对氧化型催化转化器(diesel oxidation catalyst,DOC)入口、DOC出口的温度及排放的影响。结果表明,合适的近后喷角度、油量对提升DOC入口温度、降低DOC入口未燃HC效果显著;同时,合适的远后喷角度、油量对提升DOC出口温度,DOC出口未燃HC效果显著。研究结果对柴油机DPF驻车再生缸内后喷策略的制定和优化提供了重要的指导作用。The influences of different post-injection strategies on the procedure of diesel particulate filter parking regeneration were investigated on a non-road diesel engine with high-pressure common rail system.Results show that proper parameters of near-post-injection,have significant effects on rising DOC(diesel oxidation catalyst)inlet temperature and reducing DOC inlet unburned HC emission;at the same time,proper parameters of last-post-injection,have significant effects on rising DOC outlet temperature and reducing DOC outlet unburned HC emission.The result provides a significant guidance for the development and optimization of post-injection strategy on the procedure of diesel particulate filter parking regeneration.

关 键 词：柴油机 驻车再生 近后喷 远后喷 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]