When the weather is cold, I feel no motivation.

First, the generation of engine power is weakened.

1, poor atomization of mixed gas: We know that the atomization and volatilization effect of fuel is related to temperature. Poor atomization effect will lead to most of the mixture not reaching the optimal air-fuel ratio 14.7: 1, and some fuel will be adsorbed on the intake without atomization, resulting in insufficient combustion and insufficient power of the engine.

2. Low combustion chamber temperature: This is similar to the factor of poor atomization of mixed gas. After the atomized mixture contacts the low-temperature cylinder wall, it will also be adsorbed on the cylinder wall to form carbon deposit, which will lead to poor engine combustion effect.

3. Carbon deposit: If there is carbon deposit in the air intake or cylinder, this is the main reason that affects the engine power weakening. Carbon deposition has strong adsorption, which adsorbs the fuel in the mixture, resulting in insufficient engine power.

Second, the running resistance of mechanical parts increases: at low temperature, the lubricating oil in the engine and transmission system has high viscosity and poor fluidity, which will increase the running resistance of mechanical parts and thus affect the power output of the automobile.

Third, the vehicle cold car protection system starts: all vehicles have different degrees of low-temperature work protection. Even if we heat the car to make the engine reach the working temperature, the temperature inside the transmission system such as gearbox is still relatively low. At this time, in order to protect the transmission parts of the gearbox, the shift will be delayed and the transmission system will keep running at a low speed. When the working temperature is reached, the shift of the vehicle will return to normal.