If the car's water tank is not equipped with a thermostat, what impact will it have on the car?
After winter, the fuel consumption of cars will increase to a certain extent. Some drivers will find that after turning on the heater, the increase will be even greater. The car heater obviously relies on engine temperature and uses waste heat, so how can it still happen? As for increased fuel consumption, in fact, this is mainly related to improper use.
Car engines and motorcycle engines are different. They are both water-cooled engines, which use special coolant to dissipate heat. Nowadays, some large-displacement motorcycles also use water cooling. The biggest advantage of water-cooled engines is that No heat decay. There is a special small water tank on the car, which is directly connected to the engine. When the temperature of the engine rises, the temperature of this small water tank will also rise. There is a fan behind the water tank that can adjust the speed. Once the fan is turned on, it can blow out warm air. The principle is similar to the hair dryer at home.
Engine water circulation system
The heater water tank and the front water tank are actually similar, except that the heater water tank is directly connected to the engine, and there is no thermostat in the middle, that is Said that it and the engine temperature are always consistent, and they will affect each other. When the engine temperature rises, we turn on the heater switch to blow warm air.
Since there is no thermostat, the antifreeze inside is always connected to the engine. The engine will affect the heater water tank, and the heater water tank will also affect the engine. When the engine temperature is high, turning on the heater is equivalent to cooling the engine, which will not cause any problems to the engine. However, when the engine temperature is low, turning on the heater will cause the engine temperature to delay rising. The optimal operating temperature of the engine is between 80-85 degrees. At this temperature, the engine has the highest thermal efficiency and is the most fuel-efficient.
Low engine temperature will not only increase fuel consumption, but also increase engine wear, because the fluidity of engine oil is directly proportional to the engine temperature. The higher the temperature, the stronger the fluidity. The viscosity of engine oil will directly lead to increased wear. The main wear and tear on a car engine occurs when the car is cold.
When the water temperature is low, the engine should be heated up as soon as possible and the engine should be covered. At this time, turning on the warm air is equivalent to turning on the fan to blow the engine. Some cars, in order to increase the engine temperature as quickly as possible, will control the air intake volume of the air intake grille. For example, in some BMW models, the front air grille will automatically close under certain circumstances to maintain a high temperature. temperature.
When the driver turns on the heater immediately after getting in the car, hoping to warm the interior of the car as soon as possible, it actually has the opposite result, which will cause the engine to heat up slowly. The correct approach is to let the car drive for a certain distance first, and then turn on the heater after the water temperature rises. First use the internal circulation to heat up, and then turn on the external circulation for ventilation in a timely manner. Take a look at your water temperature gauge and it will tell you when it's time to turn on the heater.
Nowadays, many automobile manufacturers, in order to save costs, omit the water temperature meter and directly replace it with a water temperature lamp. In this case, the car owner can turn on the heater and touch the temperature of the air outlet. If the air outlet It's very cold, which means the water temperature is still very low. Turn off the heater and turn it on again after a while. Experienced drivers can judge the car's water temperature through the idling speed. When the idling speed is very low, it means that the water temperature is already relatively high.
When using warm air, try not to blow it on people, because people tend to become sleepy and doze off in a relatively high temperature environment, which is not conducive to driving safety. Instead, you should blow it toward your feet. The hot air will rise upwards and your feet and body will heat up quickly. However, if you blow it toward people, it will take a long time for the temperature under your feet to rise.