Diagnosis method of cooling system based on thermal management module

Abstract

The method for diagnosing a cooling system based on a TMM module designed by the present invention includes a thermal management module for controlling the cooling system, a single coolant temperature sensor for monitoring the temperature of the coolant, and a warm air heat exchanger for heat exchange; the present invention It is a simplified and more accurate diagnosis scheme developed based on the requirements of the national standard and based on the cooling system using the TMM module (thermal management module). Compared with the diagnosis scheme of the single coolant temperature sensor, the results of the present invention are more accurate, and the specific cause of the cooling system failure can be judged more accurately; The temperature difference of the coolant temperature sensor is used to monitor the thermostat. From this point of view, this diagnostic scheme provides a more simplified and accurate cooling system diagnostic scheme for engines using thermal management modules.

Description

technical field [0001] The invention belongs to the technical field of automobiles, in particular to a cooling system diagnosis method based on a TMM module (thermal management module). Background technique [0002] When the internal combustion engine is running, the parts in contact with the high-temperature gas are strongly heated. If they are not properly cooled, they will overheat, resulting in a decrease in the charge coefficient, abnormal combustion, deterioration of the engine oil, a decrease in the strength and rigidity of the parts, an increase in friction loss, and increased wear. Thermal deformation and damage, resulting in overall deterioration of the power, economy, reliability and durability of the internal combustion engine. The task of the engine cooling system is to ensure that the engine works at the most suitable temperature under any conditions, and the diagnosis scheme of the cooling system is to ensure the normal operation of the cooling system. Nation...

AI Technical Summary

Problems solved by technology

[0002] When the internal combustion engine is running, the parts in contact with the high-temperature gas are strongly heated. If they are not properly cooled, they will overheat, resulting in a decrease in the charge coefficient, abnormal combustion, deterioration of the engine oil, a decrease in the strength and rigidity of the parts, an increase in friction loss, and increased wear. Thermal deformation and damage, resulting in overall deterioration of the power, economy, reliability and durability of the internal combustion engine

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