Why is it that when the weather turns cold, the car is "not easy to strike a fire"

1. Low temperature makes it difficult for vehicles to strike a fire.

(1) battery problem

Cold weather will reduce the energy of car batteries. Because the electrolyte in the battery will react chemically, and the working temperature of the battery is generally between-10 and 50 degrees. When the temperature is too low, the activity of chemical components decreases, the reaction speed slows down, and the energy generated is correspondingly less.

In addition, at low temperature, the viscosity of electrolyte increases and the resistance increases, which reduces the output power of electric energy. At this time, it is difficult for the starter to drag the engine. At the same time, with the decrease of the voltage at both ends, the ignition ability of the spark plug becomes weak.

(2) Oil and gasoline problems

At low temperature, the viscosity of lubricating oil will also increase, that is, the fluidity of engine oil will become worse. Lubricating oil is supposed to help the engine run, but this situation will make the crankshaft unable to reach the speed required for starting, and the engine will produce starting resistance, making it difficult to drive.

Gasoline has the same experience. When the temperature is low, the heat absorption of the engine will affect the temperature of the mixture, so that most of the fuel will enter the cylinder in liquid state, resulting in the mixture being too thin and difficult to start.

2. The car itself is difficult to strike a fire.

In this case, it is difficult to strike a fire at room temperature, and the decrease of temperature increases the difficulty of ignition. On the one hand, it is the problem of car maintenance. Car owners can recall whether they regularly check and maintain their cars.

For example, the throttle valve controls the gas in the intake pipe to enter, and then it is mixed with gasoline to form a combustible mixture. Gas combustion provides power for the engine. If the throttle is blocked by sludge, it will be difficult for the car to start without fresh air.

Also, if the combustion system is not clean, the fuel will be adsorbed by carbon deposits, resulting in insufficient combustion of gasoline and inability to provide power. On the other hand, the ignition system is faulty. It is mainly the fault of ignition coil, spark plug, high voltage line and ignition controller. If these parts are severely ablated, deposits are generated, the lines are damaged or do not meet the vehicle requirements, the car will not catch fire.

3. How to solve it

Knowing the reason why it is difficult to strike a fire can "prescribe the right medicine." Generally, the faster way is that we can start with the accelerator, but we must find the real source of the problem afterwards to solve it.

The service life of the battery is 2-3 years. If it expires, replace it, or use a car battery with nominal voltage. Try to use low viscosity engine oil when the temperature is low, and also ensure the quality of lubricating oil and engine oil;

For the intake and exhaust system and fuel system, go to the regular 4s shop for cleaning and nursing on time, and don't disassemble it at will; Go to the repair shop to test various electrical indicators and parameters; For the fault problem, either repair or replace it. In addition, cold start liquid can be used appropriately. When it is difficult to start the engine in winter, spray the starting fluid into the cylinder. Remember not to abuse and rely too much.

4. Preventive measures

It is normal for the weather to get cold, and it is not good to make a fire. Car owners should not rush in. If the first ignition is not completed, do not keep turning the battery. Wait a minute or so and try again.