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许多细心的汽车驾驶员发现,车辆进入冬季后,油耗都有了不同程度地增加,这是为什么呢?这是因为冬季气温较低,一方面车辆的各种润滑油和润滑脂其黏度增大,带来运行阻力增加,特别是运行初期,增加的运行阻力会非常明显,这必然需要增加油耗来克服这部分阻力;另一方面,汽车发动机最适宜的工作温度是90℃左右,低于这个工作温度不但影响气化质量,也影响燃烧质量,甚至损害发动机机械寿命,因此,发动机系统在起动初期会消耗一部分燃料来升温,在运行期会消耗一部分燃料来维持正常工作温度,冬季气温较低,用来升温和维持工作温度的油耗必然会增加。
Many attentive car drivers found that the fuel consumption has increased to varying degrees after entering the winter, which is why? This is because the winter temperature is low, on the one hand the vehicle’s various lubricating oils and greases its viscosity increases , Resulting in increased operational resistance, especially in early operation, increased operational resistance will be very obvious, which inevitably need to increase fuel consumption to overcome this part of the resistance; the other hand, the most appropriate engine temperature of the car engine is about 90 ℃, below this Operating temperature not only affects the gasification quality, but also affects the combustion quality and even damages the mechanical life of the engine. Therefore, the engine system consumes a part of the fuel to heat up during the initial startup, consumes part of the fuel during operation to maintain the normal operating temperature, and the winter temperature is lower , The fuel consumption for heating up and maintaining the operating temperature is bound to increase.