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

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...

AI Technical Summary

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 vehicle, which are used to alleviate the problem that the influence of the return flow of hot air on the heat dissipation performance of a vehicle cannot be effectively evaluated

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