The car cooling system is a very important part of the car engine. Its main job is to dissipate heat into the air to prevent the engine from overheating, so as to ensure the normal operation of the engine. This article, HD will introduce the overview, composition, working principle and maintenance of the car cooling system, hoping to help you better understand the car cooling system.
1. Overview of automobile cooling system:
The car cooling system is mainly composed of water pumps, radiators, cooling fans, thermostats, compensation buckets, engine blocks and water jackets in cylinder heads, and other accessories. The role of the cooling system is to drive the coolant through the coolant pump (water pump) so that it flows through the cylinder block and cylinder head of the engine, taking away part of the heat generated when the engine is working, and making the engine work within a suitable temperature range.
The main job of the cooling system is to dissipate heat into the air to prevent the engine from overheating, mainly through the pipes and passages in the engine to circulate the liquid. As fluid flows through a hot engine, it absorbs heat, reducing the engine's temperature.
2. Composition of the automobile cooling system: The automobile cooling system is mainly composed of water pump, radiator, thermostat, fan and so on.
(1)Water pump: The automobile water pump is an important component of the automobile engine cooling system. Its main function is to drive the circulation of the coolant, absorb the excess heat of the engine and transmit it to the outside air through the radiator to avoid excessive engine temperature. The function of the automobile water pump is to pressurize the coolant to ensure that it circulates in the cooling system. In layman's terms, it allows the water to continuously circulate through the radiator and engine block to take away heat to ensure that the engine is not overheated.
(2)Radiator: The car radiator is an indispensable and important part of the car water-cooled engine cooling system. Its main function is to circulate the coolant to keep the engine within an appropriate temperature range and prevent damage caused by overheating. The material of the car radiator is mainly made of aluminum or copper. The radiator core is its main component and contains coolant. Generally speaking, the car radiator is a heat exchanger.
(3)Thermostat: The function of the car thermostat is to adjust the engine to cool through the cooling water tank. When the temperature of the outlet water reaches 83 ± 3°C, especially during the process of starting the vehicle, the thermostat valve is completely in the middle, which can make the engine temperature Raise rapidly, open, and bypass closed. All the outlet water is temperature-controlled to reduce the wear of the cylinder. The characteristic of the car thermostat is that it needs to be kept in good technical condition, otherwise it will seriously affect the normal operation of the engine. If the main valve of the thermostat is opened too late, it will cause the engine to overheat; if the main valve is opened too early, the engine warm-up time will be prolonged and the engine temperature will be too low.
(4)Fan: The function of the car fan is to drive the air flow through the fan, increase the air flow, and accelerate the heat dissipation of the radiator. The characteristic of the car fan is that it needs to be kept in good technical condition, otherwise it will seriously affect the normal operation of the engine. If the fan belt is loose or broken, the engine will overheat; if the fan blades are deformed or damaged, the air volume will be reduced and the cooling effect will be affected.
The working principle of the car cooling system:
The car cooling system is composed of water pump, radiator, cooling fan, thermostat, water pipe, liquid replenishment tank, water channel (water tank) on the engine body, water jacket on the cylinder head and other additional devices, etc. of. The working principle of the cooling system is to circulate the coolant in each independent cooling system circuit to keep the drive motor, inverter (PEB) and power battery pack at the optimal operating temperature. The coolant is a mixture of 50% water and 50% Organic Acid Technology (OAT). When the engine temperature rises, the engine water circulation thermostat opens, the engine coolant enters the large circulation, and the engine drives the cooling fan to rotate to dissipate heat from the engine.
4. Maintenance of automobile cooling system: Regularly replace the coolant, clean the radiator, check the water pump, check the thermostat, etc.
Regular Coolant Changes: There are many reasons to change coolant, including:
The cooling system has leaks such as water pumps, water tanks, etc. When adding antifreeze, there is air in the antifreeze pipeline, and after the air is discharged, the antifreeze liquid level will drop. The engine boils water. If the engine cylinder gasket is broken, it will burn antifreeze. Just replace the cylinder gasket.
The high water temperature of the cooling system caused the boiler to boil, and the antifreeze sprayed out. It is necessary to check the cause of the high water temperature.
In addition, coolants that have been used for a long time may deteriorate due to oxidation, which reduces their operating characteristics, especially their antifreeze properties. In addition, the coolant also contains additives such as anti-rust agents and anti-boiling agents, which may have flocculent precipitates for a long time. So regular replacement is still necessary. It is generally recommended to check the state of the antifreeze when driving to 50,000 kilometers and choose to replace it.
(1)Clean the radiator: The function of the car radiator is to take away the heat in the engine coolant through the air flowing through the radiator, so as to maintain the normal operating temperature of the engine. If the radiator is blocked by dust, grease, insects and other sundries, it will cause poor heat dissipation, which will cause the engine temperature to be too high, and even cause engine damage.
(2)Check the water pump: The car water pump is an important part of the engine cooling system. Its function is to pump the coolant out of the water tank, and then return to the engine for recycling after dissipating heat through the radiator. If the water pump fails, it will cause the coolant to fail to circulate, causing the engine to overheat and even cause engine damage.
(3)Check the thermostat: The thermostat is an important part of the engine cooling system. Its function is to control the flow of coolant to keep the engine running at normal operating temperature. If the thermostat fails, it will cause the coolant to not flow properly, causing the engine to overheat and even cause engine damage.
The car cooling system is a very important part of the car engine. Its main job is to dissipate heat into the air to prevent the engine from overheating, so as to ensure the normal operation of the engine. I hope this article can help you better understand the car cooling system, and also hope that you can maintain your car cooling system regularly to ensure that your car can run stably for a long time.
1. What is the function of the car cooling system?
The main job of the car cooling system is to dissipate heat into the air to prevent the engine from overheating, mainly through the pipes and passages in the engine to circulate the liquid. As fluid flows through a hot engine, it absorbs heat, reducing the engine's temperature.
2. What is the coolant in the car cooling system?
Coolant in a car cooling system is a liquid specially designed for use in a car's cooling system, usually a mixture of water and antifreeze.
3. What is the radiator in the car cooling system?
The radiator is one of the most important components in a car's cooling system, it cools the engine temperature by dissipating heat into the air. Heat sinks are usually made of aluminum and have many tiny tubes and fins in order to increase the surface area and improve the cooling efficiency.
4. What is the water pump in the car cooling system?
The water pump is another important component in your car's cooling system, it is responsible for moving coolant from the radiator to the engine and hot liquid from the engine to the radiator. A water pump usually consists of wheels, vanes and bearings.
5. Does the car cooling system need regular maintenance?
Yes, car cooling systems require regular maintenance to keep them functioning properly. It is recommended to check the level and quality of the coolant at regular intervals, and to replace the antifreeze and other components (such as water pumps, radiators, etc.) regularly.