Study on Particulate Accumulated Characteristics of Diesel Particulate Filter

2012 ◽  
Vol 229-231 ◽  
pp. 331-335
Author(s):  
Da Hai Jiang ◽  
Guang Tao Yao ◽  
Xin Yun Zi ◽  
Hong Wei Liu ◽  
Ming Mao
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Pressure Loss ◽  
Diesel Particulate Filter ◽  
Back Pressure ◽  
Particulate Filter ◽  
Particulate Matters ◽  
Diesel Particulate ◽  
Exhaust Temperature ◽  
Failure Monitoring

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.

Comparison of intake and exhaust throttling for diesel particulate filter active regeneration of non-road diesel engine with mechanical fuel injection pump

2020 ◽  
pp. 146808742092603
Author(s):  
Wonmo Kang ◽  
Sukang Pyo ◽  
Hongsuk Kim
Keyword(s):  
Fuel Consumption ◽  
Diesel Particulate Filter ◽  
Fuel Injection ◽  
Particulate Filter ◽  
Diesel Particulate ◽  
Air Mass ◽  
Filter Regeneration ◽  
Exhaust Temperature ◽  
Injection Pump ◽  
Fuel Injection Pump

Diesel particulate filter regeneration using intake and exhaust throttling is technically simple and economically efficient compared to other methods. The purpose of this study is to investigate not only the reasons for the increase in exhaust temperature during intake or exhaust throttling but also their feasibility as a diesel particulate filter regeneration technology. In this study, a non-road diesel engine having a mechanical fuel injection pump was used for experiments. The changes in exhaust temperatures were measured during intake and exhaust throttling for the no-load maximum revolutions per minute engine condition. The experimental results exhibited that both intake and exhaust throttling reduced the intake air mass flow rate and increased piston pumping, which then increased fuel consumption. These effects were the primary reasons for increasing the temperature of exhaust gases. In particular, intake throttling was more effective than exhaust throttling in terms of reducing the intake air mass flow rate. However, exhaust throttling caused larger pumping losses, resulting in higher fuel consumption. Furthermore, in case of exhaust throttling, engine combustion was possible even at high equivalence ratios because of the larger amounts of residual gases in the combustion chamber. In summary, exhaust throttling is more effective for regenerating a diesel particulate filter at a high temperature than intake throttling. In addition, this study verified the feasibility of diesel particulate filter regeneration using exhaust throttling through analyses of diesel particulate filter regeneration efficiency, fuel consumption, and exhaust concentration when regenerating the diesel particulate filter by increasing the exhaust temperature through exhaust throttling.

Analysis and Evaluation of Active Based on MnOx-CeO2 Catalysts in Process of Particle Combustion for Diesel Particulate Filter

2012 ◽  
Vol 217-219 ◽  
pp. 796-800 ◽  
Author(s):  
Qing Song Zuo ◽  
Jia Qiang E ◽  
Jin Ke Gong ◽  
Shu Hui Wang ◽  
Chao Wang ◽  
...  
Keyword(s):  
Ignition Temperature ◽  
Diesel Particulate Filter ◽  
Back Pressure ◽  
Particulate Filter ◽  
Regeneration Rate ◽  
Diesel Particulate ◽  
Regeneration Time ◽  
Analysis And Evaluation ◽  
Particle Combustion ◽  
Activity Measurements

In order to reduce effectively the particulate ignition temperature of Diesel Particulate Filter containing MnOx-CeO2 catalysts，the physical and mathematical calculation models of MnOx-CeO2 catalysts were established on Diesel Particulate Filter，and according to bench tests, the activity measurements of the five different concentrations were processed for MnOx-CeO2 catalyst. The results indicated that when concentration is 20ppm, the ignition temperature can be droped about 105°C, activity measurements of Kp、Kpm and ΔKp decrease 10%, 8% and 7% respectively. Meanwhile, regeneration time can be shortened to 7min. It shows that Diesel Particulate Filter which contains concentration of this type not only has higher regeneration rate and level , but also decrease effectively exhaust back pressure.

Experimental Study of Thermal Aging on Catalytic Diesel Particulate Filter Performance

2013 ◽  
Vol 6 (2) ◽  
pp. 688-698 ◽  
Author(s):  
Dimitrios Zarvalis ◽  
Dimitrios Pappas ◽  
Souzana Lorentzou ◽  
Theofilaktos Akritidis ◽  
Leonidas Chasapidis ◽  
...  
Keyword(s):  
Experimental Study ◽  
Thermal Aging ◽  
Diesel Particulate Filter ◽  
Particulate Filter ◽  
Diesel Particulate ◽  
Filter Performance
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