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某柴油机尾气后处理装置空速计算方法

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为提高柴油机后处理装置性能,分析排气质量流量计算方法,开展台架试验采集标准工况下柴油机的进气质量流量;基于进气密度和进气质量流量,分别用进气流量和油耗量测量法、碳平衡法计算尾气后处理装置的空速,并对比 2 种计算方法的有效性.结果表明:进气质量流量和油耗量测量法、碳平衡法计算的尾气后处理装置空速结果接近,2 种方法计算的空速的相对误差为 3.94%,均可用于柴油机尾气后处理装置空速计算;相比碳平衡法,基于进气质量流量和油耗量测量法更容易实现.
Space velocity calculation of exhaust after-treatment device for a diesel engine
To improve the performance of diesel engine after-treatment device,the calculation method of exhaust mass flow rate is analyzed,and validated by bench tests to collect the intake mass flow rate of diesel engines under the rated conditions.Based on the intake density and intake mass flow rate,the airspeed of the after-treatment of exhaust gas device is calculated using the intake air flow rate and fuel consumption measurement method,as well as the carbon balance method,respectively,and the effectiveness of the two calculation methods is compared.The results show that the air velocity of the after-treatment of exhaust gas device calculated by the intake mass flow rate and fuel consumption measurement method,as well as the carbon balance method,are close.The relative error of air velocity calculated by the two methods is 3.94%,which can be used for calculating the air velocity of diesel engine after-treatment of exhaust gas devices.Compared with the carbon balance method,the measurement method based on intake mass flow rate and fuel consumption is easier to achieve.

diesel engineafter-treatment of exhaust gasspace velocityexhaust gas floweffective volume

刘建军、张建华、王明杰、白书战

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山东大学能源与动力工程学院,山东 济南 250061

山东交通学院,山东 济南 250357

柴油机 尾气后处理 空速 排气流量 有效容积

山东省科技型中小企业创新能力提升工程项目济南市市校融合发展战略工程项目

2021TSGC1334JNSX2023006

2024

内燃机与动力装置
山东省内燃机研究所 潍柴控股集团有限公司

内燃机与动力装置

影响因子:0.192
ISSN:1673-6397
年,卷(期):2024.41(3)