What is the function of an automotive fuel pump?
2 Answers
Automotive oil pumps are divided into two parts: the engine oil pump and the gasoline pump. The engine oil pump is installed inside the engine. It transports engine oil to various parts of the engine, particularly between components that rub against each other, ensuring lubrication between these parts. This practice guarantees that the engine receives proper lubrication. Below is an introduction to automotive fuel pumps: 1. Fuel Pump: The fuel pump is a professional term in the automotive parts industry. It is one of the fundamental components of the fuel injection system in electronically fuel-injected vehicles, located inside the fuel tank. The fuel pump operates during startup and while the engine is running. If the engine stops but the ignition switch remains in the ON position, the HFM-SFI control module shuts off the power to the fuel pump to prevent accidental ignition. 2. Electric Centrifugal Booster Pump: The electric centrifugal booster pump serves as an auxiliary fuel pump in the fuel system. The motor is typically mounted on a wing beam corresponding to the lower position of the fuel tank, while the pump body is submerged in the fuel at the bottom of the tank. Sealing measures are implemented between the pump impeller and the motor to prevent fuel or fuel vapor from leaking into the motor. When fuel enters the pump body, the high-speed rotating impeller radially propels the fuel outward, generating centrifugal force, increasing fuel pressure, and delivering the fuel to the system.
Having driven for 30 years, I deeply understand the role of the fuel pump. It's like the blood supply system of a car, drawing fuel from the tank and delivering it at high pressure to the engine's injectors. The engine needs to burn gasoline to run, and the fuel pump ensures this process continues uninterrupted. If it fails, the car won't start at all, or it may suddenly stall while driving, which is extremely dangerous, especially on elevated roads. Common issues include overheating of the fuel pump motor or clogged filters, which can lead to unusual noises or loss of power. I recommend regularly checking the fuel filter, keeping the tank clean, and maintaining sufficient fuel levels, as an empty tank can overheat the pump and shorten its lifespan. Replacing a fuel pump is quite a hassle, so preventive measures can save both trouble and money.
