Gasoline engine stalling due to high temperature may be caused by insufficient engine power, excessively high temperature inside the combustion chamber, or excessive thermal expansion of the piston. The specific reasons are as follows: Insufficient engine power: When the engine temperature is too high, the temperature of the air entering the engine also increases, resulting in a reduced actual volume of air entering the engine. This lowers the engine's charging efficiency, subsequently decreasing the engine's power and torque, manifesting as insufficient engine power. Excessively high temperature inside the combustion chamber: When the engine temperature is too high, the temperature inside the combustion chamber becomes extremely high, easily reaching the ignition point of gasoline and igniting the air-fuel mixture, leading to detonation. This causes severe engine impact and vibration, subjecting components to additional impact loads and resulting in premature damage. Excessive thermal expansion of the piston: When the engine temperature is too high, the piston undergoes excessive thermal expansion, reducing or even eliminating the clearance between the piston and the cylinder wall. This increases the resistance to piston movement and may even cause scoring on the piston and cylinder wall. The normal clearances of other moving parts are also disrupted, leading to accelerated wear or even damage.
