The Function of The Gasoline Engine Oil Tank

Core function

1. Fuel storage: This is the most fundamental function, providing sufficient fuel for the engine to operate continuously. The capacity of the fuel tank determines the duration for which the trimmer can work continuously after a single refueling.

Key design and functional roles

1. Fuel delivery: The fuel tank is connected to the carburetor via a fuel pipe (suction pipe). The fuel within the tank is steadily transported to the carburetor under the influence of gravity or the suction of the engine pump for atomization, mixed with air, and then entering the engine for combustion.

2. Maintaining stable fuel supply:

· Ventilation system (crucial): The fuel tank must have a ventilation hole or a ventilation valve. When fuel is drawn out, a negative pressure (vacuum) is generated inside the tank. Without a ventilation hole, external air cannot enter, and the fuel cannot flow out smoothly, ultimately causing the engine to stall. The ventilation hole balances the pressure while preventing fuel leakage and the entry of dust and water.

· Fuel filter: At the end of the suction pipe inside the fuel tank, there is usually a fuel filter (filter head) to filter out possible impurities and particles in the fuel, preventing them from blocking the fuel pipe and the precise carburetor, and protecting the engine.

3. Safety and protection:

· Leak prevention design: The fuel tank cover has a sealing gasket to ensure that the fuel will not easily leak in any position (trimmers often require tilting and flipping operations), avoiding fire hazards and fuel waste.

· Materials and strength: It is usually made of high-strength, corrosion-resistant plastic, which is lightweight and can resist the chemical corrosion of fuel and certain physical impacts.

Impact on user operations and maintenance

1. Impact on operational convenience:

· Fuel filler design: Easy to fill and equipped with a filter to prevent large particles from entering the fuel tank during refueling.

· Capacity indication: Some fuel tanks have transparent windows or simple scales, making it convenient for users to observe the remaining fuel quantity.

· Shape and integration: The fuel tanks of modern trimmers are often integrated with the body, maintaining overall balance and facilitating carrying or operation on the back.

2. Impact on machine performance and lifespan:

· Clean fuel supply: A sealed and equipped with a filter fuel tank is the first line of defense to ensure the engine receives clean fuel. Using dirty fuel or water ingress into the fuel tank will directly lead to difficulties in engine startup, unstable operation, power reduction, and even severe damage.

· Correct fuel mixture: For two-stroke gasoline trimmers, users must strictly mix gasoline and special two-stroke engine oil in the fuel tank according to the prescribed ratio. The fuel tank is the container for completing this crucial step. Inconsistent or incorrect mixture will seriously affect engine lubrication, leading to cylinder seizure, locking, and other faults.