The function of a car radiator is to store water and dissipate heat. The radiator is the main part of the cooling system, aimed at protecting the engine from damage caused by overheating. The principle of a radiator is to use cold air to reduce the temperature of the coolant from the engine inside the radiator. The radiator belongs to the automotive cooling system, and the radiator in the engine water cooling system is composed of three parts: an inlet chamber, an outlet chamber, a main plate, and a radiator core. The radiator has cooled the coolant to a high temperature. When the pipes and fins of the radiator are exposed to the airflow generated by the cooling fan and the airflow generated by vehicle movement, the coolant in the radiator cools.

In order to avoid engine overheating, the components around the combustion chamber (cylinder liners, cylinder heads, valves, etc.) must be properly cooled. In order to ensure the cooling effect, the automotive cooling system generally consists of a radiator, thermostat, water pump, cylinder block water channel, cylinder head water channel, fan, etc. The radiator is responsible for cooling the circulating water, and its water pipes and fins are mostly made of aluminum. The aluminum water pipes are made of flat shapes, and the fins are corrugated, emphasizing heat dissipation performance. The installation direction is perpendicular to the direction of air flow, and the wind resistance should be minimized as much as possible, with high cooling efficiency. The coolant flows inside the radiator core, while air passes outside the radiator core. The hot coolant cools down by dissipating heat from the air, while the cold air heats up by absorbing the heat dissipated by the coolant. Therefore, a radiator is a heat exchanger.

Installation position of car radiator

Most car radiators are installed in front of the engine and fans. Its function is to increase the heat dissipation area and accelerate the cooling of the coolant. In order to quickly remove the heat from the radiator, a fan is installed behind the radiator to work in conjunction with it.

Working Principles of Automotive Radiators

The working principle of a car radiator is based on the water temperature, engine load, and signal transmission to the computer. The engine computer controls the high and low speed relays of the fan, and is also affected by the air conditioning pressure. The air conditioning computer receives signals such as the air conditioning pressure switch, indoor and outdoor temperature, and then transmits the air conditioning signal to the engine computer through the main line. The engine receives the signal that can be turned on, controls the compressor, and also controls the fan relay to close, When the pressure of the air conditioner increases due to the environment and its own influence, the engine computer receives a signal from the air conditioner computer, controls the high-speed relay of the fan to close, and the fan runs at high speed.

The heat generated when driving a car is enough to destroy the car itself. Therefore, a cooling system is installed on the car to protect it from damage and keep the engine within the appropriate temperature range. The radiator is the main part of the cooling system, aimed at protecting the engine from damage caused by overheating. The principle of a radiator is to use cold air to reduce the temperature of the coolant from the engine inside the radiator. The radiator has two main components, a radiator plate composed of small flat tubes, and an overflow tank (located at the top, bottom, or both sides of the radiator plate).

Car radiators need to be cleaned regularly

The role of car radiators in automotive devices is not just about heat dissipation. I would like to remind everyone that when using a high-pressure water gun to clean the outer cover of the water tank condenser, it is important not to rush onto the engine, as modern cars use an electronically controlled fuel injection system. The engine compartment is equipped with an engine computer, transmission computer, ignition computer, and various sensors and actuators. If a high-pressure water gun is used for flushing, there is a possibility of a short circuit, which may damage the engine computer.