How is the water temperature system of the car controlled, and why can it heat up quickly but not hi

I am from a car background, I can tell you a very vivid analogy, the engine is like a person, it has a most suitable working temperature, the most suitable temperature for the human body is 37 degrees, and the most suitable working temperature for the engine is about 97 degrees. If the temperature is too low, the oil in the engine will not flow, and the fuel consumption of the engine will be high, and if the temperature is too high, the engine will burst to the cylinder. Therefore, the engineer will make the engine temperature rise as quickly as possible when it is designed, and when it is at the most suitable temperature, use a large cycle, and use an external fan to dissipate heat for it, when its temperature is relatively low, a small cycle, the outside fan and some other condensers, are not working, which can play a role in quickly raising the water temperature, and when the working temperature exceeds 97 degrees, it will become a large cycle, including the fan will help him dissipate heat, including the temperature of the air when the car is driving will also help him dissipate heat.

Engine water temperature is the most important parameter, the water temperature is too high or the water temperature is too low for a long time is not normal, you need to go to the 4S shop for testing, especially the water temperature is too high, the engine water temperature lamp, if the lights are blown up, it is necessary to stop driving, continue to drive, the engine is likely to open the cylinder overhaul, very, very troublesome.

When the fire is ignited, the engine will generate heat, which will cause the water temperature to rise, and the engine needs a certain temperature to work, and the temperature is too low to affect the combustion efficiency.

After reaching a certain temperature, there is a thermostat on the car, the large circulation of water will be opened, the water is pumped to the radiator, the wind generated during the driving process can take the heat away, if the driving speed is slow, there is no wind, the water temperature continues to rise, and the fan behind the radiator will turn up to speed up the heat dissipation.

1.The water temperature of the car rises for a short time because the engine is working and the water is cooling the engine, if the water temperature keeps rising, it means that there is a lack of antifreeze or there is air in the water pipe.

2.Because there is a thermostat, the water temperature will enter the general circulation after it rises to a certain level, and the water temperature will be controlled at a certain temperature. If it still rises, it may be a problem with the thermostat.

The water temperature system of the car. There are certain restrictions on both the maximum and minimum temperatures of the water. In addition, the temperature of the water can be quickly raised by the heating of the fuse.

When the water temperature is up to a certain stage, the thermostat is opened under the action of the water temperature, so that the water of the engine enters the water tank and completes a working cycle, and because the water pump has been working, the water in the water tank will enter the engine in turn, and the fan in front of the water tank is turned on at this time. The fan also changes its rotation speed depending on the temperature.

In addition, there is oil inside the engine and also has the function of lubrication and heat dissipation, so that the water temperature will always be maintained at 80 to 90 degrees during normal driving, and the coolant itself can play a certain cooling effect to ensure that the engine reaches the working temperature in the shortest possible time, the water temperature is 80 to 90 degrees, and the normal working efficiency is played, which is why the water temperature does not rise much after the car is driven for a long time.

There are many reasons for the high water temperature of the car, most of which are caused by water seepage in the water pipe and insufficient cooling water, such as broken fan belt, leakage of water tank or water pipe, thermostat failure, oil leakage, etc. If the engine power disappears or the sound of violent knocking and cylinder knocking is made during driving, it is mostly because the engine is overheating.

The specific reasons are as follows:

The cooling fan does not turn. The cooling fan may be controlled by a thermostat switch; It may also be controlled by a water temperature sensor.

Insufficient cooling medium. Antifreeze: High-end cars are required to be filled with antifreeze all year round; Water or distilled water: temporary substitute; The water tank cover is leaking.

The thermostat is damaged. If you want to remove the thermostat, you should plug the small circulation at this time, so as to ensure that all the coolant is dissipated by the water tank; When installing a new thermostat, you should pay attention to the water hole, such as Santana does not have a water hole, at this time, a 6mm drill bit should be used to drill a hole. One function is to be used as a marker; Another function is that during the heating process of the car, the temperature difference between the two sides of the thermostat is generated, so that the thermostat is accurately opened with the water temperature.

The water tank is clogged. External blockages should be removed with water or gas; Internal blockages affect coolant circulation and create pressure, which can result in two outcomes, one is a leaking water tank or the other is a particularly high water temperature at high speeds.

Pump failure. The impeller slips or gets stuck, causing the timing belt to break; The impeller is deformed.

Cylinder corrosion. The combustion chamber and the waterway are flushed, and at this time, the water will be drained from the drain pipe or white smoke will be discharged, resulting in a frequent shortage of water in the water tank; The waterway and the oil channel are flushed (the oil is white when there is water); The waterway and the waterway are rushed, resulting in poor heat dissipation of the cylinder block, especially at high speed; Blocked waterways.

Extended Information: Solutions to High Temperature in Car Radiators:

1. Pull over, put the automatic gear into P gear, and the manual gear into neutral gear, pull the parking brake handle and turn off the air conditioner.

2. If you find that the coolant is boiling and overflowing from the radiator after opening the engine cover, please turn off the engine immediately, turn the car key to the ON position, and never start the engine again, so that the electric fan of the radiator can run automatically to facilitate heat dissipation.

3. After cooling for a period of time, check the height of the coolant in the liquid storage tank, if the coolant level is low or there is no coolant at all, check whether there is leakage in the upper and lower water pipes and their interfaces, or check whether there is a break in the fan transmission belt.

Check whether the water tank is not circulating, really helping you look forward to adoption,

The reasons for the rapid rise of the water temperature of the car are: the thermostat is damaged, the coolant is only circulated for a small time, and the water temperature sensor is not dissipated, the water temperature sensor fails, the water pump fails, the impeller slips or gets stuck, and the belt is broken, the cooling medium is insufficient, the coolant is insufficient, the coolant is insufficient or the water tank is leaking.

Reasons why the water temperature of the car rises quickly:

The thermostat is damaged, and the coolant is only circulated for a small time, and the heat is not dissipated through the water tank;

The water temperature sensor is out of order;

The water pump fails, the impeller slips or gets stuck, and the belt breaks;

insufficient cooling medium, insufficient coolant or leaking water tank;

Incorrect ignition timing and excessive oil pressure, and the pointer reading of the water temperature gauge has a difference with the actual temperature;

The water tank is clogged, there is dirt blockage on the outside, and the internal water channel is clogged, which affects the circulation of coolant.

The reasons why the temperature of the water tank is often high are: 1. The scale deposition in the water tank and engine jacket causes poor heat dissipation and the water temperature rises; 2. The thermostat is damaged, so that the coolant cannot enter the water tank for circulation; 3. The pump is damaged or the transmission belt slips, resulting in poor pump work; 4. Insufficient antifreeze causes poor engine heat dissipation; 5. The cooling fan is faulty or the speed is low. The solution to the high temperature of the tank is:

1. Clean the scale deposited in the engine; 2. Check or replace the thermostat; 3. Check or replace the water pump; 4. Add antifreeze to the engine; 5. Check the cause of fan failure or low speed.

Here are the specific reasons why the water temperature of the car rises faster.

1: Insufficient coolant, it may be coolant leakage or lack of coolant, etc., which may cause the water temperature to rise quickly.

2: The cooling fan is faulty, and the cooling fan does not rotate and cannot be dissipated in time, which will also cause the water temperature to rise quickly.

3. Thermostat failure, the thermostat is adjusted according to the temperature of the cooling water, and the coolant circulation range can be changed to achieve a heat dissipation effect, and the thermostat cannot be opened will also cause the coolant temperature to rise rapidly.

There are many reasons why the water temperature of the car is heating up faster, such as the high-speed operation of the electronic fan, the long service life of the water tank, the lack of coolant, and the blockage of the water tank.

If a similar problem is found, in the case of unknown cause of the failure, it is best to turn off the car immediately, wait for the rescue of the 4S shop, and only start the vehicle again after the fault is cleared, and should drive at a slow speed as much as possible to prevent engine damage caused by excessive water temperature.

There are several reasons why the water temperature of the car rises faster, first, the pumping capacity of the water pump becomes weaker. Second, the amount of coolant is too small. 3. The thermostat is faulty. Fourth, the engine itself is faulty and has high temperatures.

If the water temperature of the car is faster than before and there is a slight leak in the water tank or engine cooling line, it is recommended to find a professional maintenance personnel to check it.

If the ambient temperature is very low and the water temperature rises quickly, it is necessary to check whether the water temperature meter and water temperature sensor are normal.

It may be that there is less low water, so the temperature rises relatively quickly, and the second one may have a high fever due to engine failure.

If you want to make the water temperature of the car rise quickly, you can start it slowly and slowly.

The normal working temperature of automobile engine is between 80 °C and 90 °C, and the working temperature of some high-performance engines can reach more than 100 °C. The period of time from the start of the engine to the time it reaches its normal operating temperature is known as the engine cold start phase. The engine should not be able to overheat, but if it is too cold when it starts, it can also hurt the engine.

When the engine is overcooled, the temperature of the mixture (or air) entering the cylinder is too low, and the quality of the combustible mixture is poor, which makes ignition difficult or combustion is slow, resulting in a decrease in engine power and an increase in fuel consumption.

There is a problem with the radiator, the circulation is not smooth, or the fan is lost.

The engine used in the car is an internal combustion engine. Its essence is an energy conversion tool, that is, the chemical energy of fuels (gasoline, diesel, ethanol, natural gas, etc.) is converted into mechanical energy. However, this conversion process cannot be completed in one step, but first the fuel is burned to release the chemical energy stored in the fuel in the form of thermal energy, and then the thermal energy drives the crank linkage mechanism of the engine to rotate to do work, which is converted into mechanical energy for external output.

As we all know, it is mechanical energy and not heat energy that drives a car, so the basic working principle of an internal combustion engine is to convert the chemical energy of the fuel into thermal energy and then into mechanical energy.

When the engine is working, the engine is in the process of small cycle work, and the coolant in the small cycle engine cannot enter the water tank. When the water temperature reaches a certain stage, the thermostat opens under the action of the water temperature, so that the water of the engine enters the water tank and completes a working cycle. When the pump is working all the time, the water in the tank will enter the engine in turn.

At this point, the fan in front of the tank will turn on and the fan will change its rotational speed depending on the temperature. Is the heat energy released after fuel combustion completely converted into mechanical energy? The answer is no, all energy conversion processes must be accompanied by energy loss.

For car engines, the conversion efficiency is still low (often referred to as engine thermal efficiency). For gasoline engines, the highest thermal efficiency of the most advanced gasoline engine is only 41%, that is, only 41% of the heat generated by a gasoline engine that burns 1 kg of gasoline is converted into mechanical energy to drive the car, and the rest of the heat is wasted; In everyday driving, the average thermal efficiency of the engine is about 30%. For diesel engines, the thermal efficiency can be slightly higher, up to about 45%, and the average daily driving rate can reach about 35%, which is one of the reasons for the lower fuel consumption and better economy of diesel vehicles.

As a result, many trucks with a particular focus on economy use diesel engines, and many passenger cars in Europe also use diesel engines, which is the biggest difference from China. In addition, the engine has organic oil, which also has lubrication and heat dissipation functions. In this way, the water temperature will always remain between 80 and 90 degrees during normal driving.

In addition, the coolant itself can also play a certain cooling role, ensuring that the slow engine can reach the working temperature in the shortest possible time, the water temperature is between 80 and 90 degrees, and the work efficiency can be played normally. That's why the water temperature doesn't rise much after a long drive.

When the car starts, it will produce a very large amount of energy, which can heat up quickly, and when driving for a long time, this energy is stable and will not rise again.

Because often pei which to drive, for the function of the car is not equipped with a banquet code to have a good grasp, so it will lead to such a situation, and often do not drive the car, this function is still better than Xiangna.

After the engine starts, the speed is relatively fast, and if you regret this, it will inject a lot of fuel, which will make the temperature very high, and then the Qing finger will enter a small cycle state, and it will not rise again.

There are many reasons why the water temperature of the car has become faster, such as the high-speed leakage operation of the electronic fan, the long service life of the water tank, the lack of coolant, and the blockage of the water tank.

If you find a similar problem, in the case of unknown cause of the failure, it is best to turn off the car immediately, wait for the rescue of the 4S shop, and only after the fault is cleared, you can start the vehicle again.

The reasons for the rapid rise of the water temperature of the car: 1. The coolant is damaged by the thermostat and only circulates for a small time, and does not dissipate heat through the water tank; 2. The water temperature sensor is out of order; 3. The impeller of the pump is faulty and the impeller is slipping or stuck, resulting in the belt breaking; 4. Insufficient cooling medium, insufficient coolant or water tank leakage; 5. The ignition timing is incorrect and the oil pressure is too high, and there is a difference between the reading of the pointer of the water temperature gauge and the actual temperature; 6. The water tank is blocked, the external dirt is blocked, and the internal water channel is blocked, which affects the circulation of coolant. The thermostat is an automatic temperature control device, which contains a temperature sensing component, which automatically adjusts the amount of water entering the radiator according to the temperature of the cooling liquid, and changes the circulation range of the coolant to adjust the heat dissipation capacity of the cooling system.