发动机舱的冷却气流仿真与散热的改善*

doi:10.19562/j.chinasae.qcgc.2020.09.008

Abstract

Abstract: In order to reduce cooling drag, a numerical simulation on the air flow of original engine compartment is conducted. Based on the results of simulation, different improvement schemes are proposed from three aspects: changing the flow direction of cooling air, reducing the energy loss of air flow passing through front-end components and enhancing radiator performance, on which wind tunnel tests are carried out for verification. The results show that after front-end plate separator is added the flow rate of intake air increases by 15%, and cooling drag lowers by 5 counts. As for the heat dissipation within engine compartment, by combining simulation and test, several measures are taken, such as adding baffle plate behind steering box to intensify the local air flow, adding flow guiding shroud behind fan for guiding hot airflow and adding flow guiding device at the intake port of engine to supply extra cooling air flow. As a result, the heat dissipation of steering box and transmission mounts are improved with the cooling air flow in front-end unaffected

Key words: heat dissipation of engine compartment, cooling drag, numerical simulation, radiator, wind tunnel test

Li Tiantian, Zhao Lanping, Wang Jianxin, Zhu Zhijun, Zhang Jun, Zhang Hao. Cooling Airflow Simulation and Heat Dissipation Improvement of Engine Compartment[J].Automotive Engineering, 2020, 42(9): 1197-1205.

References

[1] KUTHADA T, WIEDEMANN J. Investigations in a cooling air flow system under the influence of road simulation[C]. SAE Paper 2008-01-0796.
[2] BAEDER D, INDINGER T, ADAMS N. Aerodynamic investigation of vehicle cooling drag[C]. SAE Paper 2012-01-0170.
[3] WILLIAMS J, KARANTH D, OLER W.Cooling inlet aerodynamic performance and system resistance[C]. SAE Paper 2002-01- 0256.
[4] WITTMEIER F, KUTHADA T. Open grille drivAer model – first results[J]. SAE Int. J. Passeng. Cars-Mech. Syst., 2015, 8(1).
[5] KUTHADA T, WITTMEIER F, BOCK B, et al. The effects of cooling air on the flow field around a vehicle[J].SAE Int. J. Passeng. Cars-Mech. Syst., 2016, 9(2).
[6] KUBOKURA T, UNO T, EVANS N, et al. Study of cooling drag reduction method by controlling cooling flow[C]. SAE Paper 2014-01-0679.
[7] ZHANG C H, UDDIN M, SONG X, et al. Simultaneous improvementof vehicle under-hood airflowand cooling drag using 3D CFD simulation[C]. SAE Paper 2016-01-0200.
[8] CHRISTOFFERSEN L, LOFDAHL L, JONSON A. Interference between engine bay flow and external aerodynamics of road vehicles[C]. SAE Paper 2010-01-0288.
[9] GILLIERON P, CHOMETON F. Reduction of cooling air drag of road vehicles: an analytical approach[C]. SAE Paper 2001-01-1266.
[10] IVANIC T, GILLIERON P. Reduction of the aerodynamic drag due to cooling systems: an analytical and experimental approach[C]. SAE Paper 2005-01-1017.
[11] 袁侠义,彭丽娟,陈林,等.某SUV车型前端结构对冷却模块风量和内流阻力的影响分析[J]. 汽车技术,2015 (7):4-9.
YUAN X Y, PENG L J, CHEN L, et al. Impact analysis of passenger car front-end structure on cooling flow and internal flow resistance[J]. Automotive Technical, 2015 (7): 4-9.
[12] 刘晓晖,庞加斌,王建新,等.利用风扇罩主动格栅实现对车辆冷却气流的控制[J]. 汽车工程学报,2017 (4):288-298.
LIU X H, PANG J B, WANG J X, et al. Application of fan housing active grille shutter for cooling air flow control on vehicle[J]. Journal of Automotive Engineering, 2017 (4): 288-289.
[13] 李田田,刘晓晖,庞加斌,等.防撞梁优化对冷却气流的影响[J]. 汽车工程学报,2018 (6):431-437.
LI T T, LIU X H, PANG J B, et al. The influence of optimized front buffer beam on cooling airflow[J]. Journal of Automotive Engineering, 2018 (6): 431-437.
[14] SCHUETZ T. Aerodynamics of road vehicles-fifth edition[M]. SAE International, 2015: 187-189.
[15] JAHANI K, BEIGMORADI S. Under-hood air flow evaluation of pedestrain-friendly front-end style using CFD simulation[J]. SAE Int. J. Passeng. Cars-Mech. Syst., 2014, 7(2).
[16] LARSON L, WOODIGA S, GIN R, et al. Aerodynamic investigation of cooling drag of a production sedan part 1: test results[J]. SAE Int. J. Passeng. Cars-Mech. Syst., 2017, 10(2).
[17] LARSON L, GIN R, LIETZ R. Aerodynamic ivestigation of cooling drag of a production sedan part 2: CFD results [J]. SAE Int. J. Passeng. Cars-Mech. Syst., 2017, 10(1).
[18] 赵亚芳,尹章顺,居小敏,等. Air Dam对整车气动性能的影响[J].汽车工程,2014,36(10):1258-1273.
ZHAO Y F, YIN Z S, JU X M, et al. Effects of air dam on aerodynamic performance of vehicle[J]. Automotive Engineering, 2014, 36(10): 1258-1273.
[19] 王贝.整车进风条件下冷却模块性能优化研究[D].上海:同济大学,2020.
WANG B. Research on the Improvement of cooling module performance under vehicle condition[D]. Shanghai: Tongji University, 2020.

[1]	ZHOU Wei, ZHANG Cheng-Ning, LI Jun-Qiu. [J]. , 2016, 38(12): 1407 -1414 .
[2]	ZONG Yi-Qi, GU Zheng-Qi, LUO Ze-Min, JIANG Cai-Mao, ZHANG Qi-Dong, YANG Zhen-Dong. [J]. , 2016, 38(12): 1427 -1433 .
[3]	ZHANG Ying-Chao, ZHAN Da-Peng, ZHAO Jing, ZHANG Zhe, LI Jie. [J]. , 2016, 38(12): 1434 -1439 .
[4]	TANG You-Ming, YAN Ling-Bo, LUO Qian, CAO Li-Bo. [J]. , 2016, 38(12): 1452 -1458 .
[5]	ZHANG Lei, LU Jian-Wei, JIANG Jun-Zhao, YAN Pei-Lei, LI Lei. [J]. , 2016, 38(12): 1477 -1482 .
[6]	ZHAO Liang, ZHANG Qiang, GUO Kong-Hui. [J]. , 2017, 39(1): 86 -91 .
[7]	SHEN Deng-Feng, WANG Chen, YU Hai-Sheng, ZHANG Tong, YI Xian-Ke. [J]. , 2017, 39(1): 15 -22 .
[8]	ZOU Tie-Fang, HU Lin, LI Ping-Fan, YI Liang. [J]. , 2017, 39(1): 41 -46 .
[9]	ZHOU Kai, ZANG Jing-Lun. [J]. , 2017, 39(2): 127 -132 .
[10]	ZUO Wen-Jie, CHEN Ji-Shun, LI Yi-Wen, LIU Nian. [J]. , 2017, 39(2): 145 -149 .

Cooling Airflow Simulation and Heat Dissipation Improvement of Engine Compartment

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 10

[1]	Jingfeng Shao,Huihui Zuo,Xingjun Hu. Optimization of Aerodynamic Drag Reduction and Its Flow-Field Mechanism for a Sport Utility Vehicle (SUV) [J]. Automotive Engineering, 2024, 46(2): 356-365.
[2]	Wanteng Wang,Nan Li,Xueyi Bai,Dou Yang,Hang Li,Guijing Li. Research on Effect of Gas Diffusion Layer Layered Design on the Performance of PEMFC Stack [J]. Automotive Engineering, 2023, 45(9): 1720-1727.
[3]	Yixiao Zhang,Xiao Ma,Xinhui Lu,Zhi Wang,Weilin Zhuge,Shijin Shuai. An Investigation on Intake Preheating Characteristics Based on Spray Wall Impinging Ignition for Diesel Engine [J]. Automotive Engineering, 2023, 45(8): 1489-1498.
[4]	Ling Qin,Xiaojin Du,Jinyang Feng,Shunqiao Huang,Menghua Duan,Qingyang Wang. Study on Aerodynamic Noise Characteristics of SUV Hollow Roof Spoiler [J]. Automotive Engineering, 2023, 45(5): 880-887.
[5]	Miaoyan Song,Guocheng Zhou,Hongqing Chen,Bao Chen. Noise Reduction Design and Wind Tunnel Test Verification of an SUV Rearview Mirror [J]. Automotive Engineering, 2023, 45(4): 681-689.
[6]	Daokuan Jiao,Dong Hao,Xiaobing Wang,Minghui Ma,Yanyi Zhang. Study on the Impact of Vibration on Water Transport in the Fuel Cell Gas Diffusion Layer [J]. Automotive Engineering, 2023, 45(3): 402-408.
[7]	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.
[8]	Xingjun Hu,Jingming Mao,Yanghui Zhang,Yichen Liu,Jiayi Ma,Junxian Qiao,Tianming Yu. The Wind Noise Source and Its Characteristic Analysis of HSM Standard Model [J]. Automotive Engineering, 2022, 44(8): 1262-1271.
[9]	Zihui Pang,Jiquan Han,Ping Chen,Yunmei Liu,Jianmei Feng,Xueyuan Peng. Research on the Influence of Key Structural Parameters of Ejectors for a 170 kW Fuel Cell System [J]. Automotive Engineering, 2022, 44(12): 1889-1895.
[10]	Fangxi Xie,Jingang Wang,Huili Dou,Jiaxing Li,Bin Wang,Wei Hong. Influence of Structural Parameters of Pre-combustion Chamber on the Development Characteristics of Gasoline Hot Jet [J]. Automotive Engineering, 2022, 44(11): 1716-1724.
[11]	Shuangshuang Li,Wei Song,Liang Zou,Junying Min,Jianping Lin. Influence of the Windward Angle of Front Bumper Deflector on the Aerodynamic Drag of a Light Bus [J]. Automotive Engineering, 2022, 44(11): 1779-1785.
[12]	Yubo Lian,Qiuli Luo,Fengli Zhang,Rongrong Zhang,Yadong Zhang. Automotive Aerodynamics Development Based on Shape Optimization Method [J]. Automotive Engineering, 2022, 44(10): 1619-1626.
[13]	Yan Shi,Yao Li,Peipei Xu. Flow Field Simulation of Engine Compartment in a Commercial Vehicle and Design Optimization of Flow Guiding Shroud [J]. Automotive Engineering, 2021, 43(8): 1248-1253.
[14]	Zhigang Yang,Liqi Peng,Zhe Shen,Li Chen. Experimental Study on Vehicle Dynamic and Static Leak Noises at Different Sealing Positions Based on Tape Sealing Method [J]. Automotive Engineering, 2021, 43(5): 784-790.
[15]	Chao Ren,Haibo Wu,Qian Chen. Experimental and Simulation Research on the Influence of Wheels on Vehicle Aerodynamic Performance [J]. Automotive Engineering, 2021, 43(12): 1848-1857.