What is a brushless fuel pump? How does it work?

A brushless fuel pump is a fuel delivery device driven by a brushless motor. It's primarily used in automotive, aviation, and other internal combustion engine systems, pumping pressurized fuel from the fuel tank to the engine's combustion chamber. Its key advantage over traditional brushed motor fuel pumps is the elimination of the mechanical contact structure of brushes and a commutator, improving performance and reliability.

How it works

A brushless fuel pump typically consists of a pump body, a motor, and a housing. These three components interact and interact to provide constant pressure in the fuel system, ensuring smooth operation. When the motor is energized, it acts as a force, driving the rotor inside the pump housing to rotate at high speed. The rotor doesn't rotate independently; it also drives the impeller, driven in the same direction, through the rotor shaft. This creates a vacuum at the fuel inlet, drawing fuel under pressure through the pump cover inlet. The impeller pressurizes the drawn-in fuel and forces it into the pump housing. The fuel is then forced out through the outlet and delivered to the engine's combustion chamber. Thus, the brushless fuel pump completes its mission. The Difference Between Brushless and Brushed Fuel Pumps.

This brief analysis explains how a brushless fuel pump works. Some car owners might be wondering: What are the advantages of a brushless fuel pump? Let's take a closer look.

As the table above shows, aside from their higher cost, brushless fuel pumps are superior to brushed fuel pumps in every other respect. With such a superior brushless fuel pump, can it be installed in my car? Perhaps you're wondering, don't worry, let's analyze it in detail.

First, while traditional brushed fuel pumps operate using brushes and a commutator, brushless pumps use electronic commutation (like a BLDC motor), requiring compatibility with the vehicle's circuitry and control methods. The circuitry of some older models may not directly support the drive signals of a brushless pump.

Second, the voltage (typically 12V or 48V) and power of the brushless pump must match the vehicle's fuel system; otherwise, fuel shortages or overloads may occur.

Finally, the flow rate of a high-performance brushless pump may far exceed the manufacturer's requirements, requiring consideration to determine whether it will overload the injection system (especially in naturally aspirated engines).

Thus, installing a brushless fuel pump requires many considerations; it's not a simple matter of simply installing it. Of course, if your vehicle is suitable for a brushless fuel pump and you're looking for a suitable brushless fuel pump supplier, please contact us. OSIAS will be your ideal choice.