Study on Particulate Accumulated Characteristics of Diesel Particulate Filter
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The paper has carried out numerical simulation and experimental study on the pressure loss of filter. Based on pressure loss model of filter, research methods of particulate accumulated characteristics has proposed according to the exhaust flow, exhaust temperature and exhaust back pressure. Meanwhile, the model is important for the online calculation of accumulated particulate matters in the filters and failure monitoring of diesel particulate filter.Keywords:
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Filtration (mathematics)
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Methods of regeneration of diesel particulate are discussed and the operation of diesel additives in particulate regeneration is analyzed. A diesel particulate purification device is designed by using diesel additives. How factors, such as the ratio of additives to fuel, the temperature of engine exhaust and the structure of the particulate filter, influence particulate regeneration is described through an experiment. This experiment shows that this diesel particulate purification device is effective in regenerating diesel particulate.
Diesel exhaust fluid
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Catalytic Oxidation
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Diesel Particulate Filter (DPF) is regenerated in particulate matter (PM) oxidation reaction when PM was loaded. In this report, it makes a study regarding basic calculation method of kinetics parameters using the oxidation reaction process of PM that was simulated by laboratory experiments with synthetic gases. Additionally, it reports on the results of examining the relation between temperature and time when a DPF is regenerating, using kinetic parameters.ディーゼルエンジンから排出される粒子状物質はDPFで捕集後に酸化除去される。本件では、粒子状物質の酸化反応過程をモデルガス試験で再現し、酸化に関わる速度論パラメータの導出方法について基礎的な検討を行った。さらに、導出したパラメータからDPF再生時の温度と時間の関係についても検討した結果を報告する。
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Back pressure
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The technology of diesel particulate filter (DPF) is one of the most effective ways to control particulate emission of diesel engine. In this paper, a DPF was installed on a high-pressure common rail diesel engine, which meets China Stage III emission standard (GB17691-2005), to investigate the filtration efficiency of DPF, and its effects on exhaust back pressure, fuel economy, and emissions characteristics of diesel engine by test bench. Results showed that after DPF was installed on the engine, the PM was reduced by more than 90%, while specific fuel consumption and exhaust back pressure were increased by about 5% and 10kPa, respectively.
Filtration (mathematics)
Back pressure
Common rail
Diesel exhaust fluid
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The paper has carried out numerical simulation and experimental study on the pressure loss of filter. Based on pressure loss model of filter, research methods of particulate accumulated characteristics has proposed according to the exhaust flow, exhaust temperature and exhaust back pressure. Meanwhile, the model is important for the online calculation of accumulated particulate matters in the filters and failure monitoring of diesel particulate filter.
Back pressure
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