What Are the Reasons for a Sudden Increase in Car Fuel Consumption in Winter?
1 Answers
Increased car fuel consumption in winter may be influenced by tire pressure. As temperatures consistently drop in winter, tire pressure also decreases. If the pressure drops significantly and is not promptly checked and replenished, the contact between the tires and the ground increases, leading to greater friction and higher tire resistance, which can affect fuel consumption to some extent. Lower temperatures reduce the thermal efficiency of the car, resulting in increased fuel injection. When a cold car starts in winter, the engine temperature has not yet risen, leading to poorer fuel atomization and insufficient concentration of the air-fuel mixture for combustion. To ensure normal engine operation, the fuel injection volume must be significantly increased to provide more combustible mixture. After driving for some time, the temperature rises and fuel consumption returns to normal. The viscosity of engine oil also affects car fuel consumption. In regions with unstable temperatures and significant fluctuations, if the oil is not changed during temperature drops, the viscosity of the oil increases as temperatures decrease, leading to greater resistance. It is advisable to switch to engine oil with lower viscosity at low temperatures during winter.
