Layout optimization of cooling modules in a commercial vehicle engine compartment

doi:10.3969/j.issn.1674-8484.2022.02.019

Abstract

Abstract:

A method for parameterizing the position of the cooling module in the engine front compartment was proposed to improve the water temperature of a commercial vehicle engine and the wind resistance of the whole vehicle. Combined with the 1 D/3 D computing platform, a calculation model of the engine compartment of the prototype vehicle was established. Based on the calculation model, a four-factor and four-level orthogonal test with the distance between the intercooler, the radiator, the cooling fan and the engine body in the engine compartment was used as the optimization variable. The engine outlet water temperature and the wind resistance coefficient of the whole vehicle are calculated, and the orthogonal test results were analyzed by the range method to obtain the primary and secondary relationship of each factor and level on the engine cooling effect and aerodynamic resistance, so as to determine the optimal combination scheme. The results show that the optimal solution is 2.3 ℃ lower than the original engine outlet water temperature, and 9.03 counts lower than the original wind resistance coefficient. Therefore, this optimization method can effectively reduce the engine outlet water temperature and the wind resistance of the whole vehicle.

Key words: engine compartment, cooling module, wind tunnel test, orthogonal test, 1D/3D co-smulation

CLC Number:

ZHOU Donghui, LUO Renhong, WANG Zhifeng. Layout optimization of cooling modules in a commercial vehicle engine compartment[J]. Journal of Automotive Safety and Energy, 2022, 13(2): 378-385.

Figures/Tables 21

References 24

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中冷器		散热器
v / (m·s^-1)	Δp / Pa	v / (m·s^-1)	Δp / Pa
2.52	113.57	5.24	63.57
3.75	201.43	7.91	119.10
5.01	319.03	10.55	206.89
6.28	483.86	13.14	321.60

中冷器		散热器
v / (m·s^-1)	Δp / Pa	v / (m·s^-1)	Δp / Pa
2.52	113.57	5.24	63.57
3.75	201.43	7.91	119.10
5.01	319.03	10.55	206.89
6.28	483.86	13.14	321.60

名称	δ₁ /（kg·m^-4）	δ₂ /(kg·m^-3s^-1)
中冷器	189.6	435.3
散热器	45.3	60.4

名称	δ₁ /（kg·m^-4）	δ₂ /(kg·m^-3s^-1)
中冷器	189.6	435.3
散热器	45.3	60.4

名称	Q / kW	q_mc /（kg·s^-1）
散热器	82	5.170
中冷器	41	0.483