Vehicle heat dissipation performance evaluation method and system and computer readable storage medium

A heat dissipation performance and vehicle technology, applied in computer-aided design, calculation, sustainable transportation, etc., can solve the problem that the impact of hot air return flow on heat dissipation performance cannot be effectively evaluated, shorten product development cycle, reduce product restructuring and testing Cost, the effect of ensuring thermal balance performance

Active Publication Date: 2022-05-13
XUZHOU XUGONG AUTOMOBILE MFG CO LTD
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Problems solved by technology

[0003] Some embodiments of the present invention provide a method, system, and computer-readable storage medium for evaluating the heat dissipation performance of a vehicl

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  • Vehicle heat dissipation performance evaluation method and system and computer readable storage medium
  • Vehicle heat dissipation performance evaluation method and system and computer readable storage medium

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specific Embodiment

[0108] A specific embodiment of the evaluation method of vehicle heat dissipation performance is described in detail below, which includes the following steps:

[0109] S10: The hot air return path of the vehicle is as follows: figure 1 shown, press figure 1 A complete vehicle model of a built vehicle is shown, wherein the complete vehicle model 10 includes components such as a cab 1 , a condenser 2 , an intercooler 3 , a radiator 4 , a windshield 5 , a fan 6 , and an engine 7 .

[0110] S20: Carry out CFD calculation on the whole vehicle, wherein the vehicle speed is set to 5km / h, and the fan speed is set to the torque point speed according to the engine performance test data. The condenser, intercooler, and radiator are equivalently replaced by inputting their resistance characteristic curves into the porous media module of CFD. Among them, the resistance characteristic curve of radiator is as follows: figure 2 shown. Establish a rotating coordinate system, and the fan ...

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Abstract

The invention relates to a vehicle heat dissipation performance evaluation method and system and a computer readable storage medium. The evaluation method comprises the following steps that a whole vehicle model is established; cFD calculation is conducted on the whole vehicle model, and the hot air backflow amount of a radiator in the whole vehicle model is obtained; a cooling system one-dimensional matching model is used for calculating the first cooling liquid temperature of cooling liquid flowing out of the engine under the condition that no hot air backflow exists in a radiator, and the first limit environment temperature of normal use of the engine is obtained according to the first cooling liquid temperature; the cooling system one-dimensional matching model is used for calculating the second cooling liquid temperature of the cooling liquid flowing out of the engine under the condition that hot air backflow exists in the radiator, and the second limit environment temperature of normal use of the engine is obtained according to the second cooling liquid temperature; according to the first limit environment temperature and the second limit environment temperature, the predicted influence result of the hot air backflow on the heat dissipation performance of the radiator is determined. The method can effectively evaluate the influence of the hot air reflux quantity on the heat dissipation performance of the vehicle.

Description

technical field [0001] The invention relates to the technical field of commercial vehicle design, in particular to an evaluation method, system and computer-readable storage medium for vehicle heat dissipation performance. Background technique [0002] When heavy trucks go uphill slowly, they are prone to high torque point conditions. In this state, the cooling air is mainly driven by the cooling fan. At this time, the thermal balance performance of the heavy-duty truck will undergo the most stringent test. Due to the rotation of the cooling fan, the inner cavity of the windshield responds with negative pressure, and the external cooling airflow is driven by the pressure, enters the cavity of the windshield through the condenser, intercooler, radiator and the installation gap between them, and flows from the fan Since the internal structure of the engine compartment is compact, the air heated by hot components such as the condenser, intercooler, and radiator hits the engine...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/28G06F113/08G06F119/08G06F119/14
CPCG06F30/15G06F30/28G06F2119/08G06F2119/14G06F2113/08Y02T90/00
Inventor 陈太荣石岩许佩佩王敏唐公明陈德博
Owner XUZHOU XUGONG AUTOMOBILE MFG CO LTD
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