A method and system for analyzing thermal performance of automobiles

Abstract

The present invention provides a method and system for analyzing the thermal performance of an automobile. The method includes: obtaining engine oil flow data, combustion chamber temperature data, combustion chamber exhaust flow data, water jacket heat transfer data, coolant flow data, and air intake volume at the front end of the vehicle. data, passenger compartment model data and passenger compartment temperature data; establish a combustion heat transfer model based on the combustion chamber temperature data, water jacket heat transfer data and combustion chamber exhaust flow data; according to the engine oil flow data, combustion chamber temperature data and combustion chamber Establish the heat transfer model of the lubrication system based on the exhaust flow data; establish the heat transfer model of the cooling system based on the heat transfer data of the water jacket, the coolant flow data and the air intake data at the front of the vehicle; establish the heat transfer model of the passenger compartment based on the model data of the passenger compartment and the temperature data of the passenger compartment Model; calculate the temperature rise of the whole vehicle through the combustion heat transfer model, the lubrication system heat transfer model, the cooling system heat transfer model and the passenger compartment heat transfer model. The invention can improve the accuracy of automobile temperature rise analysis.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an analysis method and system for thermal performance of automobiles. Background technique [0002] With the development of automobile technology and the improvement of living standards, people put forward higher and higher requirements for the thermal performance of automobiles. In the process of vehicle development, the thermal performance design requires that the vehicle should be neither too hot nor too cold under all driving conditions, but in fact, more attention is paid to the cooling and heat dissipation performance, and insufficient attention is paid to the thermal comfort of the occupants, especially In view of the large temperature difference between the north and the south, it is more likely to lose sight of the other in the performance design of the thermal system of the vehicle. Either the excessive cooling performance design leads to low heating water temperatu...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an analysis method and system for the thermal performance of automobiles, which solves the problem of large errors in thermal balance analysis of existing automobile thermal performance data obtained through engine bench thermal balance tests, improves the accuracy of thermal balance analysis of automobiles, and improves the performance of automobiles. performance

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