What is the function of the engine purge pump?

[Wyatt]

The functions of the engine purge pump include: Controlling gas concentration: The main function of the carbon canister purge pump is to blow fuel vapor from the carbon canister into the intake pipe and control the concentration of the combustible mixture. If the purge pump is damaged, the fuel vapor in the carbon canister cannot enter the cylinders, leading to a decrease in the concentration of the combustible mixture in the engine. This will result in reduced vehicle power output. Purge pump damage: If the carbon canister is filled with fuel vapor but the purge pump fails to expel the fuel vapor from the canister, it will affect the recovery of subsequent fuel vapor, naturally leading to increased fuel consumption. Additionally, if the purge pump is damaged, fuel vapor will be directly released into the atmosphere (since the carbon canister is already full at this point), and a noticeable gasoline odor can be detected in the vehicle's exhaust.