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Position: Home > Articles > High-altitude Test Study of Diesel Engine After-treatment Device Agricultural Equipment & Vehicle Engineering 2020 (2) 1-5

柴油机后处理装置高海拔试验研究

作  者：
陈贵升;赖运智;邹超;许杨松;卢申科
单  位：
昆明理工大学云南省内燃机重点实验室;云南菲尔特环保科技有限公司
关键词：
重型柴油机;氧化催化器;催化型微粒捕集器;排放
摘  要：
搭建了重型柴油机加装DPF,CDPF,DOC+CDPF的高原试验台架,研究分析了发动机性能、后处理装置的温度和压差。结果表明,加装3种后处理装置,发动机动力性和经济性均有不同程度下降,其中DOC+CDPF下降幅度最大;3种后处理装置排放性均有不同程度改善,其中碳烟捕集效果均比较高,加装CDPF和DOC+CDPF的后端CO排放均趋近于零;DOC+CDPF方案中,CDPF前端的温度明显升高,促进碳烟在CDPF中再生;随转速的升高,单独加装CDPF前后端压差不断增大,在高转速时逐渐平稳,DOC+CDPF方案中,CDPF前后端压差先增大后趋于平稳再逐渐减小,综合性能DOC+CDPF方案最好。
译  名：
High-altitude Test Study of Diesel Engine After-treatment Device
作  者：
Chen Guisheng;Lai Yunzhi;Zou Chao;Xu Yangsong;Lu Shenke;Yunnan Key Laboratory of Internal Combustion Engine, Kunming University of Science and Technology;Yunnan Filter Environment Protection S.& T.Co., Ltd.;
关键词：
heavy-duty diesel engine;;diesel oxidation catalyzst;;catalytic diesel particulate filter;;emission
摘  要：
An plateau test-bed that diesel engine retrofitted with DPF, CDPF and DOC+CDPF was built, the engine performance,temperature and pressure difference of the after-treatment device were analyzed. The results showed that with the addition of three after-treatment devices, the power and economy of the engine decrease to varying degrees, and DOC+CDPF have the most decrease;the emissions of the three after-treatment devices are improved to varying degrees, the effect of carbon smoke collection is high,and the CO emissions at the back end of CDPF and DOC+CDPF are all close to zero; in the DOC+CDPF scheme, the temperature at the front of CDPF increases significantly, promoting the regeneration of carbon smoke in CDPF; with the increase of rotating speed,the pressure difference between the front and back ends of CDPF added separately increases continuously, and becomes stable at high rotating speed; in DOC+CDPF scheme, the pressure difference between the front and back ends of CDPF increases first, then becomes stable and then gradually decreases. Comprehensive performance of DOC+CDPF scheme is the best.

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