Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (6): 1911-1919.doi: 10.13229/j.cnki.jdxbgxb20180922

Previous Articles     Next Articles

In⁃cylinder exergy destruction during combustion process ofheavy⁃duty turbocharged diesel engine

Chang-cheng LIU(),Zhong-chang LIU,Jing TIAN(),Yun XU,Ze-yu YANG   

  1. State Key Laboratory of Automotive Simulation and Control，Jilin University，Changchun 130022，China
  • Received:2018-09-10 Online:2019-11-01 Published:2019-11-08
  • Contact: Jing TIAN E-mail:liuchangcheng1@163.com;jingtian@jlu.edu.cn

RICH HTML

 6   

PDF (PC)

186

Abstract:

The purpose of this paper is to explore the distribution of in-cylinder exergy destruction and its influence factors in combustion process. A heavy-duty turbocharged diesel engine is taken as the research object to study exergy change rule, exergy destruction distribution in cylinder and its influence factors based on test platform, STAR-CD computational fluid dynamics software and subsequent theoretical calculation. The results show that first, exergy destruction in cylinder mainly happens in combustion process, the exergy destruction caused by chemical reaction and its proportion to in-cylinder exergy destruction are positively related with engine load at the same speed, the proportion is up to 94.5% at B75 working condition. Secondly, exergy destruction in cylinder of diesel engine is mainly caused by chemical reaction irreversibility and it mostly occurs at the edge of oil beam. Third, the largest chemical reaction exergy destruction rate happens in dense mixing zone whose equivalence ratio range is 1~1.5; however, the value is relatively low in dilute mixing region or denser mixing zone whose equivalence ratio is lower than 1 or greater than 1.5. With the development of combustion process, the reaction exergy destruction rate decreases gradually in different equivalence ratios zone. Fourth, in a certain temperature range, the chemical reaction exergy destruction rate is almost proportional to the heat release rate of fuel, and in a certain heat release rate region, the chemical reaction exergy destruction and its proportion of the fuel exergy gradually reduces with the temperature increase. Finally, as the combustion process proceeding, the relative intensity of equivalence ratio, temperature and chemical reaction exergy destruction decrease gradually.

Key words: power machinery and engineering, turbo-charged diesel engine, combustion process, in-cylinder exergy destruction, temperature, equivalent ratio

CLC Number: 

  • TK421

Table 1

Basic parameters of turbocharged dieselengine for test"

参 数数值
缸径/mm112
行程/mm145
压缩比17
总排量/L8.6
标定功率/kW257
标定转速/(r·min-1)2 100
单缸气门数/个4
气缸数/个6
进气方式增压-中冷
供油系统Bosch共轨控制系统

Table 2

Selection of computational model"

模型名称模型类型
湍流模型k-ε/RNG
着火模型Shell
雾化模型Huh
喷嘴模型MPI-2
液滴破碎模型Reitz/Diwakar
撞壁模型Bai
燃烧模型EBU LATCT
NOx排放预测模型Zeldovich
Soot排放预测模型Mauss

Fig.1

Simulation model validation at different working conditions"

Fig.2

Cumulative in-cylinder exergy destructionin combustion process under differentworking conditions"

Fig.3

Proportion of every part of exergy flowin fuel exergy"

Fig.4

Exergy destruction caused by chemical reaction and its proportion accounts for total exergydestruction in cylinder"

Fig.5

Thermal efficiency and specific fuelconsumption of diesel engine"

Fig.6

Exergy destruction distributions caused by chemical reaction in cylinder at B50"

Fig.7

Scatter plot of exergy destruction ratiocaused by chemical reaction-heatrelease ratio-temperatur"

Fig.8

Scatter plot of κ-temperature at ATDC 5 °CA"

Fig.9

Scatter plot of exergy destruction ratio caused by chemical reaction and equivalent ratio"

Fig.10

Variation of exergy destruction caused by chemical reaction under different equivalence ratios ranges at B50"

Fig.11

Correlation coefficient between temperature and exergy destruction caused by chemicalreaction"

Fig.12

Correlation coefficient between equivalenceratio and exergy destruction caused bychemical reaction"

1 田径, 刘忠长, 刘金山, 等. 基于燃烧边界参数响应曲面设计的柴油机性能优化[J]. 吉林大学学报:工学版, 2018, 48(1): 159-165.
1 TianJing, LiuZhong-chang, LiuJin-shan, et al. Performance optimization of diesel engine based on response surface methodology of multi-boundary combustion conditions[J]. Journal of Jilin University (Engineering and Technology Edition), 2018, 48(1): 159-165.
2 LiT T, CatonJ A, JacobsT J. Energy distribution in a diesel engine using low heat rejection (LHR) concepts[J]. Energy Conversion and Management, 2016, 130: 14-24.
3 YanF, SuW H. A promising high efficiency RM-HCCI combustion proposed by detail kinetics analysis of exergy losses[C]∥SAE Paper, 2015-01-1751.
4 KhoobbakhtG, AkramA, KarimiM, et al. Exergy and energy analysis of combustion of blended levels of biodiesel, ethanol and diesel fuel in a DI diesel engine[J]. Applied Thermal Engineering, 2016, 99: 720-729.
5 MahabadipourH, SrinivasanK K, KrishnanS R. A second law-based framework to identify high efficiency pathways in dual fuel low temperature combustion[J]. Applied Energy, 2017, 202: 199-212.
6 周松, 王银. 内燃机工作过程仿真技术[M]. 北京: 北京航空航天大学出版社, 2012.
7 蒋德明. 内燃机燃烧与排放学[M]. 西安: 西安交通大学出版社, 2001.
8 JafarmadarS, TasoujiazarR, JalipourB. Exergy analysis in a low heat rejection IDI diesel engine by three dimensional modeling[J]. International Journal of Energy Research, 2014, 38(6): 791-803.
9 解茂昭. 内燃机计算燃烧学[M]. 大连: 大连理工大学出版社, 2005.
10 JafarmadarS, MansouryM. Exergy analysis of air injection at various loads in a natural aspirated direct injection diesel engine using multi-dimensional[J]. Fuel, 2015, 154: 123-131.
11 JafarmadarS, NematiP. Exergy analysis of diesel/biodiesel combustion in a homogenous charge compression ignition (HCCI) engine using three-dimensional model[J]. Renewable Energy, 2016, 99: 514-523.
12 PennyM A. Efficiency improvements with low heat rejection concepts applied to low temperature combustion [D]. Texas：Texas A&M University, 2014.
13 RakopoulosC D, KyritsisD C. Comparative second-law analysis of internal combustion engine operation for methane, methanol, and dodecane fuels[J]. Energy, 2001, 26(7): 705-722.
14 FuJ Q, LiuJ P, FengR H, et al. Energy and exergy analysis on gasoline engine based on mapping characteristics experiment[J]. Applied Energy, 2013, 102: 622-630.
15 LiY P, JiaM, KokjohnS L, et al. Comprehensive analysis of exergy destruction sources in different engine combustion regimes[J]. Energy, 2018, 149: 697-708.
16 范立云, 许德, 费红姿, 等. 高速电磁阀电磁力全工况关键参数相关性分析[J]. 农业工程学报, 2015, 31(6): 89-96.
16 FanLi-yun, XuDe, FeiHong-zi, et al. Key parameters’ correlation analysis on high-speed solenoid valve electromagnetic force under overall operating conditions[J]. Transactions of the Chinese Society of Agricultural Engineering, 2015, 31(6): 89-96.
17 李文辉, 袁志国, 刘长铖. 离合器滑摩过程中负载特性对动力传动系统转速的影响[J]. 哈尔滨工程大学学报, 2018, 39(8): 1296-1301.
17 LiWen-hui, YuanZhi-guo, LiuChang-cheng. Effects of load characteristics on powertrain system speed in frictional sliding process of clutch[J]. Journal of Harbin Engineering University, 2018, 39(8): 1296-1301.
[1] Ren HE,Kun TU. Electromagnetic brake with changed⁃temperature air gap width [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1777-1785.
[2] Qiao WANG,Wan-chen SUN,Liang GUO,Peng CHENG,Lu-yan FAN,Guo-liang LI. Effects of butanol/diesel blends on combustion and particulate emission characteristics of compression ignition engine [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1920-1928.
[3] Chang-qing SONG,Wen-miao CHEN,Jun LI,Da-wei QU,Hao CUI. Effects of single and dual ignition on combustion characteristics of natural gas under different equivalence ratios [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1929-1935.
[4] Yi-xiao ZHU,Xiao-min HE,Yi JIN. Effects of radial strut width on flow structure ofsingle⁃cavity trapped vortex combustor [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1936-1944.
[5] Xiao-yu HU,Guo-xiang LI,Shu-zhan BAI,Ke SUN,Si-yuan LI. Modified boiling heat transfer model considering roughness and material of heating surface [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1945-1950.
[6] Chun-zheng DUAN,Fang-yuan ZHANG,Wen-neng KOU,Bin WEI. Martensitic transformation of surface white layer in high speed hard cutting [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(5): 1575-1583.
[7] Guang YAN,Jian-zhong LU,Kai-yu ZHANG,Fan-yong MENG,Lian-qing ZHU. Temperature decoupling large range fiber Bragg grating strain sensor [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(5): 1682-1688.
[8] Guo⁃feng QIN,Jing⁃xin NA,Wen⁃long MU,Wei TAN,Jian⁃ze LUAN,Hao SHEN. Degradation failure of adhesively bonded CFRP/aluminum alloy subjected to high temperature environment [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1063-1071.
[9] De⁃jun WANG,Zhi⁃chao LYU,Qi⁃ming WANG,Jian⁃rui ZHANG,Jian⁃nan DING. Cylinder pressure identification based on EKF and frequency⁃amplitude modulation Fourier series [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1174-1185.
[10] Yan-qin ZHANG,Ya-nan FENG,Peng-rui KONG,Xiao-dong YU,Xiang-bin KONG. Temperature field and experiment of hydrostatic bearing oil film based on hot oil carrying [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1203-1211.
[11] Peng⁃fei ZANG,Zhe WANG,Yang GAO,Chen⁃le SUN. Investigation of integrated control strategy for stable operation of linear generator/engine system [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(3): 798-804.
[12] Yu⁃peng LI,Da⁃qian SUN,Wen⁃biao GONG. Temperature fields in bobbin⁃tool friction stir welding for 6082⁃T6 aluminum alloy sheet [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(3): 836-841.
[13] LI Yi,LIU Li-ping,SUN Li-jun. Prediction model on rutting equivalent temperature for asphalt pavement at different depth [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(6): 1703-1711.
[14] JIANG Tao,LIN Xue-dong,LI De-gang,YANG Miao,TANG Xue-lin. Effect of control parameters on heat release rate with ANN method [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(6): 1747-1754.
[15] LI Zhi-jun, WANG Hao, HE Li, CAO Li-juan, ZHANG Yu-chi, ZHAO Xin-shun. Soot distribution features and its influence factors in catalytic diesel particulate filte [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(5): 1466-1474.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] Wang Xiao-bing，Chen Jian-jun，Gao Wei，Zhao Jun，Li Jin-ping. Sensitivity analysis of transient thermal field for composite plates[J]. 吉林大学学报(工学版), 2006, 36(04): 456 -461 .
[2] Liu Xu-zong，Liu Shu-bin，Zheng Wei，An Qi . Mulitichannel synchronous serial transmission method of hit information
in Beijing spectrometer Ⅲ TOF trigger system
[J]. 吉林大学学报(工学版), 2008, 38(02): 483 -0488 .
[3] Na Jingxin, Cui An, Gan Weiyin, Hu Ping. Modified Surface Spreading Fournode Element in Onestep Inverse Forming Simulation and Its Application in Automobile Front Fender[J]. 吉林大学学报(工学版), 2006, 36(01): 57 -0061 .
[4] Zheng Hai-hong,Zeng Ping,Wang Yi-feng . Robust watermarking algorithm based on polarity modulation[J]. 吉林大学学报(工学版), 2007, 37(03): 681 -0685 .
[5] Dai Wen-ting，Wei Hai-bin, Liu Han-bing, Gao Yi-ping . Dynamic damage model of silty clay after freeze-thaw cycles[J]. 吉林大学学报(工学版), 2007, 37(04): 790 -793 .
[6] . [J]. 吉林大学学报(工学版), 2007, 37(06): 1304 -1307 .
[7] SHI Gang, SHI Yongjiu, WANG Yuanqing. Momentrotation Hysteretic Model of Semirigid Endplate Connections in Steel Frames[J]. 吉林大学学报(工学版), 2005, 35(06): 654 -0660 .
[8] WANG Zhanshan , ， ZHANG Huaguang . Exponential Stability of Neural Networks with Multiple TimeVarying Time Delays[J]. 吉林大学学报(工学版), 2005, 35(06): 621 -0625 .
[9] HE Li-qiao1, WANG Guo-guang2, WANG Dan2 . Orthognal local projective method for weak signal extraction in chaos
[J]. 吉林大学学报(工学版), 2008, 38(04): 950 -954 .
[10] PENG Bao, GU Xue-mai . Secure localization protocol based on validation node in wireless sensor network
[J]. 吉林大学学报(工学版), 2008, 38(05): 1186 -1190 .
Copyright © Journal of Jilin University(Engineering and Technology Edition), All Rights Reserved.
Tel: +86-431-85095297　Fax: +86-431-85094074　E-mail: xbgxb@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd