Machine oil filler cap

The utility model provides a machine oil filler cap, includes flap body, heating resistor, temperature sensory unit and controller, the heating resistor reaches temperature sensory unit set up in on the flap body, temperature sensory unit reaches the heating resistor all with the controller electrical property links to each other, works as the controller is judged temperature sensory unit sensingto temperature when being less than the to set the temperature threshold value, controller control heating resistance heating. This machine oil filler cap can prevent aqueous vapor liquefaction, reaches troubles such as frozen because of the temperature variation causes machine oil emulsification to appear then. 种机油加注口盖，包括口盖本体、加热电阻、温度感测单元及控制器，所述加热电阻及所述温度感测单元设置于所述口盖本体上，所述温度感测单元及所述加热电阻均与所述控制器电性相连，当所述控制器判断出所述温度感测单元感测到的温度低于设定的温度阈值时，所述控制器控制所述加热电阻加热。该机油加注口盖能够防止水气液化，继而因温度变化造成机油出现乳化及结冰等故障。