A control method for a supercharged engine cooling system of an automobile

Abstract

The invention discloses an automobile supercharged engine cooling system and a control method thereof. A radiator is divided by a partition plate into a high-temperature radiator and a low-temperature radiator. An inner water way of an engine cylinder body is divided into an exhaust side cylinder cover water way and a cylinder body and air inlet side cylinder cover water way, wherein the liquid inlet end of the exhaust side cylinder cover water way is connected with a mechanical water pump. The liquid inlet end of the exhaust side cylinder cover water way is provided with a first temperature adjuster connected with the liquid inlet end of the cylinder body and air inlet side cylinder cover water way. The liquid outlet end of the exhaust side cylinder cover water way and the liquid outlet end of the cylinder body and air inlet side cylinder cover water way are sequentially connected with a warm air core and an engine oil cooler through a first water return pipe, wherein the engine oil cooler is connected with the mechanical water pump. The first water return pipe is connected with a second water return pipe through a second temperature adjuster, and the second water return pipe is connected with the high-temperature radiator. The automobile supercharged engine cooling system comprises an electronic water pump, the electronic water pump is connected with the liquid inlet end of a turbine supercharger and the liquid inlet end of an intercooler, and the liquid outlet end of the turbine supercharger and the liquid outlet end of the intercooler are connected with the liquid inlet end of the low-temperature radiator. By means of the automobile supercharged engine cooling system and the control method thereof, engine cylinder body and cylinder cover cooling can be accurately controlled, and the cooling performance of various loops is achieved.

Description

technical field [0001] The invention relates to an automobile supercharged engine, in particular to an automobile supercharged engine cooling system and a control method thereof. Background technique [0002] Due to the increasingly strict restrictions on vehicle displacement and emissions in various countries around the world, it is a popular trend to reduce engine displacement. In this case, supercharging technology is the most commonly used solution to obtain better power performance. A turbocharged engine refers to an engine equipped with a turbocharger. The turbocharged engine increases the intake air volume by compressing the air, the air pressure and density increase can burn more fuel, and the corresponding increase in fuel volume and adjustment of the engine speed can increase the output power and torque of the engine. After being supercharged, the pressure and temperature of the engine are greatly increased during operation, so the engine life will be shorter tha...

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Problems solved by technology

[0004] The engine cooling system needs to maintain the engine within the proper operating temperature range, but for traditional engine cooling, either the temperature of the cylinder head is too high, or the temperature of the cylinder block is slightly lower

The main reason for this is that the traditional cooling system cannot independently control the temperature of the cylinder head and the cylinder block. Generally, the water jacket of the cylinder block and cylinder head is connected in series; that is, the coolant first passes through the cylinder block, then passes through the cylinder head, and finally passes through a thermostat. The engine outlet water temperature, so the temperature of the cylinder head and cylinder block cannot be controlled at a reasonable temperature point, which will not only affect the fuel consumption rate and output power of the engine but also affect the emission of the engine

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