Winter engine start difficult temperature is only part of the reason
In the winter, there are often difficulties in starting engines. However, the sharp drop in temperature is only a part of the reason. In addition, there are also factors in their own technical conditions. The following Xiaobian will take you to briefly analyze:
First, the battery capacity decreases as the temperature decreases, so that the starting speed is further reduced.
Second, the viscosity of diesel oil at low temperature increases, so that the injection speed is reduced. In addition, the swirling speed, temperature, and pressure of the air at the end of the compression are relatively low, so that the atomization quality of diesel injected into the cylinder is poor, and it is difficult to rapidly form air with the air. Good flammable gases burn in time, and they cannot even ignite, making it difficult to start.
Third, as the starting speed is reduced, the leakage of compressed air is increased, and the heat dissipation of the cylinder wall is increased. As a result, the temperature and pressure of the air at the end of compression are greatly reduced, so that the delay period of diesel ignition increases, and in severe cases, it cannot even burn.
Fourth, the cold winter weather, the ambient temperature is low, the viscosity of the oil increases, the frictional resistance of the moving parts increases, so that the starting speed is reduced, it is difficult to start.
Therefore, when the winter vehicle is difficult to start, the climate plays a major role, and the decline of the vehicle's own function also has a great influence.
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