Temperature and pressure double-alarm device of vehicle cooling system and engine cooling system

Abstract

The invention relates to a temperature and pressure double-alarm device of a vehicle cooling system and an engine cooling system. The temperature and pressure double-alarm device comprises a temperature detection mechanism for detecting the temperature of engine cooling liquid, and a pressure detection mechanism for detecting the water pressure in an engine water system, wherein the temperature detection mechanism and the pressure detection mechanism both are mounted at a water outlet of an engine. According to the temperature and pressure double-alarm device, the temperature of the cooling liquid at the water outlet of the engine is monitored through a temperature sensor, the pressure of the cooling liquid at the water outlet of the engine is monitored through a pressure sensor, the temperature and pressure of the cooling liquid are subjected to cross validation, multi-protection is achieved, and serious faults of the engine are avoided.

Description

technical field [0001] The invention relates to a vehicle engine cooling system, in particular to a vehicle cooling system temperature and pressure dual alarm device and the engine cooling system. Background technique [0002] The engine cooling system is a certain flow of coolant circulating between the engine and the radiator, which keeps the heat load of the engine within a safe range and ensures the life and reliable operation of the engine. The heat taken away by the coolant Q=q*C*ΔT (q, the coolant flow rate of the engine; C, the specific heat capacity; ΔT, the temperature difference between the inlet and outlet of the coolant), when the flow rate q is normal, the temperature of the engine system (usually used Engine coolant outlet temperature) determines whether the coolant system works normally. Therefore, the engine coolant outlet temperature is usually used as a monitoring indicator in automobiles. When the engine coolant outlet temperature rises abnormally, it ind...

AI Technical Summary

Problems solved by technology

When the engine is running, when the engine water system suddenly lacks water, the circulation of the coolant in the engine water system will almost stop, the internal temperature of the engine will rise rapidly, and the heat load will seriously exceed the limit; The outlet temperature will not rise too much, nor will it reach the alarm value. At this time, the engine may have failures such as cylinder damage, but the engine does not alarm, which seriously affects the safety of driving vehicles.

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