lågtrycksbränslepump

A lågtrycksbränslepump, often translated as a low-pressure fuel pump, is a component within a fuel system responsible for transferring fuel from the storage tank to the engine at a relatively low pressure. These pumps are typically found in older or simpler fuel systems, particularly in carbureted engines or some early fuel injection systems. Their primary function is to supply a steady flow of fuel, overcoming the resistance of fuel lines and filters, to a point where a higher-pressure pump or the carburetor can then regulate the fuel delivery to the combustion chamber.

Unlike high-pressure fuel pumps used in modern direct injection systems, a lågtrycksbränslepump operates at pressures typically ranging from a few PSI up to around 15 PSI. This lower pressure is sufficient for its role in the system. They can be mechanically driven by the engine, often via a cam lobe, or electrically powered. The electric versions are common, especially in applications where mechanical drive is impractical. The pump’s output is crucial for preventing fuel starvation, especially under load, ensuring the engine receives the necessary fuel to operate smoothly. Maintenance might involve checking for leaks or ensuring consistent operation.