engine cooling system

Abstract

An engine cooling system mainly includes an engine body water jacket, a water pump, a radiator, a fan, a thermostat, an expansion tank, a heater radiator and connecting pipelines. They are connected by pipelines to jointly form large and small circulation cooling channels and heating system pipelines. It is characterized in that: a shut-off valve with temperature control function is set in the pipeline of the warm air system, and when the engine is started and the temperature of the engine coolant is lower than the set temperature, the shut-off valve is in a closed state. A shut-off valve with temperature control function can also be set in the small circulation loop. When the temperature is lower than the set temperature, the shut-off valve is in an open state, and when the temperature is higher than the set temperature, the shut-off valve body is in a closed state. Because only two temperature control cut-off valves are added, it is ensured that the coolant does not flow through the heating system before the temperature reaches the set temperature, which reduces the engine heat loss and engine warm-up time at this stage. Especially suitable for use in winter or colder regions.

Description

technical field [0001] The invention relates to a cooling system of a vehicle engine, more specifically to a small circulation of the vehicle engine cooling system and a rapid warm-up system of the water circulation of a heater. Background technique [0002] At present, the forced circulation water cooling system is generally used in automobile engines. It uses a water pump to increase the pressure of cooling water to circulate it in the engine cooling system. [0003] "Automobile Structure" (2nd edition, edited by Guan Wenda of Jilin University, Mechanical Industry Press) discloses a water cooling system. Both the cylinder head and the cylinder block of the water-cooled engine are cast with interconnected water jackets. Under the action of the water pump, the cooling water flows through the cooling water jacket of the cylinder block and the cylinder head to absorb heat, and then flows into the radiator along the water pipe. Using the speed of the car and the strong sucti...

AI Technical Summary

Problems solved by technology

However, due to the small circulation, part of the coolant flows through the heater (there is a small radiator inside the heater), which will cause a certain amount of heat loss, which will undoubtedly increase the warm-up time of the engine and increase fuel consumption.

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