DPF内灰塞分布对颗粒捕集特性的影响

doi:10.19562/j.chinasae.qcgc.2023.03.011

Abstract

Abstract:

In order to study the influence of ash plug formed by ash deposition in diesel particulate filter （DPF） on the trapping characteristics of particulate matter （PM）， a CFD model of DPF channel and ash plug is constructed. The continuous phase coupling discrete phase method is used to study the influence of the blockage ratio， length， position and number of ash plugs on the flow field and PM trapping characteristics in DPF channel. The results show that for the airflow movement in the DPF channel， the position and blockage ratio of the ash plug contribute more to the pressure drop than the number and length， especially the distribution position of the first ash plug plays a decisive role in the pressure drop. The ash plug will change the deposition pattern of PM in the DPF， aggravating the uneven distribution of PM in the recirculation zone at the outlet of the ash plug due to the sudden expansion effect. When the distribution of ash plug in the channel moves forward， the deposition of PM will be uneven. With the distribution of ash plug moving backward， the deposition of PM gradually moves forward and the distribution is more uniform.

Key words: diesel particulate filter, ash deposition, ash plug, distribution, flow field, particle

Wei Zhang,Long Jiang,Liping Meng,Zehong Li,Zhaohui Chen,Zhijun Li. Influence of Ash Plug Distribution in DPF on Particle Trapping Characteristics[J].Automotive Engineering, 2023, 45(3): 438-450.

Figures/Tables 22

References 21

1	MENG Z， CHEN C， LI J， et al. Particle emission characteristics of DPF regeneration from DPF regeneration bench and diesel engine bench measurements［J］. Fuel， 2020， 262： 116589.
2	张韦，陈朝辉，孔孟茜，等. 柴油机催化型颗粒捕集器喷油助燃再生特征［J］. 农业工程学报， 2019， 35（8）： 92-99.
	ZHANG W， CHEN Z H， KONG M X， et al. Bench test of regeneration characteristics of catalyzed diesel particulate filter based on fuel injection combustion system［J］. Transactions of the Chinese Society of Agricultural Engineering， 2019， 35（8）： 92-99.
3	BAGI S， SINGH N， ANDREW R. Investigation into ash from field returned DPF units： composition， distribution， cleaning ability and DPF performance recovery［C］. SAE Paper 2016-01-0928.
4	LIU Y， SU C， CLERC J， et al. Experimental and modeling study of ash impact on DPF backpressure and regeneration behaviors［J］. SAE International Journal of Engines， 2015， 8（3）： 1313-1321.
5	潘金冲，华伦，张文彬，等. 润滑油灰分对直喷汽油车GPF性能影响的试验研究［J］. 汽车工程， 2019， 41（5）： 487-492，513.
	PAN J C， HUA L， ZHANG W B， et al. An experimental study on the impact of lubricant ash on gasoline particle filter performance of GDI vehicle［J］. Automotive Engineering， 2019， 41（5）： 487-492，513.
6	STRZELEC A， BILHEUX H Z， FINNEY C E A， et al. Neutron imaging of diesel particulate filters［C］. SAE Paper 2009-01-2735.
7	ISHIZAWA T， YAMANE H， SATOH H， et al. Investigation into ash loading and its relationship to DPF regeneration method［C］. SAE Paper 2009-01-2882.
8	DITTLER A. Ash transport in diesel particle filters［C］. SAE Paper 2012-01-1732.
9	MATSUNO M， KITAMURA T. Direct visualization of soot and ash transport in diesel particulate filters during active regeneration process［C］. SAE Paper 2019-01-2287.
10	陈贵升，李青，吕誉，等. 灰分及载体结构对DPF内部流场及压降特性的影响［J］. 汽车工程， 2020， 42（10）： 1346-1353，1377.
	CHEN G S， LI Q， LÜ Y， et al. Effects of ash and carrier structure on the internal flow field and pressure drop characteristics of DPF［J］. Automotive Engineering， 2020， 42（10）： 1346-1353，1377.
11	WANG Y， OBUCHI Y， ZHANG J， et al. Experiments and analyses on stability/mid-channel collapse of ash-deposit wall layers and pre-mature clogging of diesel particulate filters［C］. SAE Paper 2019-01-0972.
12	KAMP C J， BAGI S， WANG Y. Phenomenological investigations of mid-channel ash deposit formation and characteristics in diesel particulate filters［C］. SAE Paper 2019-01-0973.
13	WANG Y， KAMP C J， WANG Y， et al. The origin， transport， and evolution of ash in engine particulate filters［J］. Applied Energy， 2020， 263： 114631.
14	SAPPOK A， WANG Y， WANG R Q， et al. Theoretical and experimental analysis of ash accumulation and mobility in ceramic exhaust particulate filters and potential for improved ash management［J］. SAE International Journal of Fuels and Lubricants， 2014， 7（2）： 511-524.
15	FUKUI R， OKAMOTO Y， NAKAO M， et al. Experimental analysis of sudden pressure increase phenomenon by real-time internal observation of diesel particulate filter［J］. Journal of Engineering for Gas Turbines and Power， 2016， 138（10）： 102803-102807.
16	WANG Y， WONG V. Quantitative analysis of ash density and ash distribution inside DPF honeycomb channels based on X-ray computed tomography［C］. SAE Paper 2019-01-0979.
17	WANG Y， WANG B， KAMP C J， et al. In-situ measurements of engine particulate filter ash deposits via X-ray computed tomography scanning［J］. Aerosol Science and Technology， 2021， 55（8）： 943-956.
18	ZHANG X G， TENNISION P， RUONA W. 3D numerical study of pressure Loss characteristics and filtration efficiency through a frontal unplugged DPF［J］. SAE International Journal of Fuels & Lubricants， 2010， 3（1）： 177-193.
19	WANG Y， KAMP C. The effects of mid-channel ash plug on DPF pressure drop［C］. SAE Paper 2016-01-0966.
20	李志军，侯普辉，焦鹏昊，等. DPF孔道内流场及微粒沉积特性的数值模拟［J］. 天津大学学报（自然科学与工程技术版）， 2015， 48（10）： 914-920.
	LI Z J， HOU P H， JIAO P H， et al. Numerical simulation for flow and soot accumulation in the channels of diesel particulate filter［J］. Journal of Tianjin University（Science and Technology） 2015， 48（10）： 914-920.
21	朱亚永，赵昌普，王耀辉，等. 柴油机DPF流场压降及微粒沉积特性数值模拟［J］. 内燃机学报， 2017， 35（6）： 538-547.
	ZHU Y Y，ZHAO C P，WANG Y H，et al. Numerical simulation of pressure-drop and soot particle accumulation performance of a diesel engine DPF［J］. Transactions of CSICE， 2017， 35（6）： 538-547.

[1]	SHEN Zhe, WANG Yi-Gang, YANG Zhi-Gang, LI Fang-Xu. [J]. , 2016, 38(12): 1440 -1445 .
[2]	CAO Li-Bo, HU Yuan, YAN Ling-Bo, PENG Yu, SHI Xiang-南. [J]. , 2017, 39(2): 174 -180 .
[3]	WANG Bin, LI Tie, ZHANG Xiao-Qing, GUO Tao, SHI Qi. [J]. , 2017, 39(3): 256 -261 .
[4]	LIN Xin-You, MO Li-Ping, LUO Yong, ZHANG Shao-Bo. [J]. , 2017, 39(4): 369 -375 .
[5]	CHU Liang, LIU Da-Liang, LIU Hong-Wei, CAI Jian-Wei, ZHAO Di. [J]. , 2017, 39(4): 471 -479 .
[6]	YANG Zheng-Jun, FU Bing-Zheng, YIN Hang, TAN Jian-Wei, ZHOU Xiao-Yan, GE Yun-Shan. [J]. , 2017, 39(5): 497 -502 .
[7]	BAI Zhong-Hao, ZHANG Lin-Wei, BAI Fang-Hua, YAN Chang-Zheng, QIN Zhen-Yuan, ZHANG Yong-Chun. [J]. , 2017, 39(5): 524 -529 .
[8]	Zhao Xi, Chen Shuai, Ying Liang, Hou Wenbin, Hu Ping. Crashworthiness Optimization of Automotive Thin-walled Structure with Functionally Graded Strength#br#[J]. , 2018, 40(5): 508 -514 .
[9]	Chen Jichi, Wang Hong, Wang Qiaoxiu, Hua Chengcheng, Liu Chong. A Study on Drowsy Driving State Based on EEG Signals[J]. , 2018, 40(5): 515 -520 .
[10]	Xie Shaobo, Xin Zongke, Li Huiling, Liu Tong & Wei Lang. A Study on Coordinated Optimization on Battery Capacity and Energy Management Strategy for a Plug in Hybrid Electric Bus[J]. , 2018, 40(6): 625 .

方案	1	2	3	4
堵塞比/%	25 50 75	50	50	50
长度/mm	30	30 40 50	30	30
位置	孔道中段	孔道中段	孔道前段孔道中段孔道后段	孔道中段
数量/个	1	1	1	1 2 3

发动机指标	技术参数
发动机型号	D30
缸径×行程/mm	95×105
排量/L	2.977
发动机型式	4缸直列、增压中冷、高压共轨燃油喷射
额定功率/kW	110（3 200 r·min^-1）
最大转矩/（N·m）	400（1 600~2 600 r·min^-1）

指标	技术参数
孔道宽度/mm	1.4
孔道长度/mm	254
孔隙率/%	0.5
壁面渗透率/m²	1.84×10^-13
多孔介质壁厚/mm	0.36
入口速度/（m·s^-1）	26.5
灰塞孔隙率/%	0.85
灰塞渗透率/m²	7.4×10^-14
颗粒直径/mm	0.001

[1]	Xinjie Yuan,Fang Liu,Zhongjun Hou. Self-adaptive Porous Structure Detection of the Catalyst Layer in PEMFCs Based on GA-PSO-Otsu Algorithm [J]. Automotive Engineering, 2023, 45(9): 1702-1709.
[2]	Lei Zhang, Keren Guan, Xiaolin Ding, Pengyu Guo, Zhenpo Wang, Fengchun Sun. Tire-Road Friction Estimation Method Based on Image Recognition and Dynamics Fusion [J]. Automotive Engineering, 2023, 45(7): 1222-1234.
[3]	Junfeng Wang,Jiqing Chen,Fengchong Lan,Qingshan Liu. Approximation Method of Distribution Function Based on Directional Importance Sampling of Vector-Angle Geometric Mapping and Reliability Analysis of Multiple Failure Modes [J]. Automotive Engineering, 2023, 45(6): 1081-1089.
[4]	Yizhe Chen,Hongde Fan,Yichun Wang,Hui Wang,Jun Li,Lin Hua. Research on Stamping Deformation of Automotive Fiber Metal Laminates [J]. Automotive Engineering, 2023, 45(3): 517-526.
[5]	Qiang Song,Guanfeng Wang,He Shang,Nianzhong Zhang. Research on Handling Stability Control Strategy for Distributed Drive Electric Vehicle Based on Multi-parameter Control [J]. Automotive Engineering, 2023, 45(11): 2104-2112.
[6]	Zhihao Wang,Zhongming Xu,Ziheng Xia,Hucheng Wang,Jiacong Huang. Active Control of Road Noise in Vehicles Running on Impulsive Road [J]. Automotive Engineering, 2023, 45(1): 119-127.
[7]	Shaohua Liu,Haochuan Dong,Lizhong Shen. Study on Construction of Diesel Combustion Mechanism Based on Soot Particle Size Distribution Prediction and the Impact of Oxygen Concentration [J]. Automotive Engineering, 2023, 45(1): 93-103.
[8]	Wang Liang,Zhaobo Qin,Liang Chen,Yougang Bian,Manjiang Hu. Longitudinal Control Method of Intelligent Vehicles Based on the Improved BP Neural Network [J]. Automotive Engineering, 2022, 44(8): 1162-1172.
[9]	Xinyou Lin,Qiang Huang,Guangji Zhang. Torque Distribution Strategy Optimization of a Novel Dual-Motor Multi-Mode Drive System Using PSO Algorithm [J]. Automotive Engineering, 2022, 44(8): 1218-1225.
[10]	Xiaoyan Peng,Xingfei Xing,Qingjia Cui,Jing Huang. Research on Driving Force Distribution Control Method of Distributed Electric Vehicles [J]. Automotive Engineering, 2022, 44(7): 1059-1068.
[11]	Renxin Xiao,Daping Liang,Guisheng Chen,Shuang Liu. Experimental Study on Performance of China VI Diesel Engine at Different Altitudes [J]. Automotive Engineering, 2022, 44(12): 1926-1935.
[12]	Kaizhan Gao,Qiao Luo,Zhifei Zhang,Zhongming Xu. Vibration Comfort Evaluation of Vehicle Seat Based on Body Pressure Distribution [J]. Automotive Engineering, 2022, 44(12): 1936-1943.
[13]	Xiaohan Jiang,Jianwei Tan,Changjian Xu,Yunshan Ge,Lijun Hao,Xin Wang,Jiachen Li. Research on Particle Emission Characteristics of Direct In-jection Gasoline Vehicles Based on the Particle Size Distribution [J]. Automotive Engineering, 2022, 44(10): 1609-1618.
[14]	Xiaowei Wang,Xiaojun Jing,Tao Gao,Xuejing Gu,Youyuan Zhang,Linlin Wu. Study on Real Driving Fine Particles Emission Characteristics for a Heavy-duty Diesel Vehicle Based on Engine-in-the-Loop Methodology [J]. Automotive Engineering, 2022, 44(1): 58-63.
[15]	Jiujian Chang,Yufan Zhang. Research on Optimization Control Strategy for Braking Energy Recovery of a Battery Electric Vehicle Based on EMB System [J]. Automotive Engineering, 2022, 44(1): 64-72.

Influence of Ash Plug Distribution in DPF on Particle Trapping Characteristics

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 22

References 21

Related Articles 15

Metrics

Comments

Recommended 10