3 Major Types of Fuel Pumps

3 Major Types of Fuel Pumps

A fuel pump is responsible for delivering fuel to a car's engine from its fuel tank. A Compatible High Flow Fuel Pump is a versatile type capable of accomplishing the operation effortlessly. Brands manufacture fuel pumps with different features. Although fuel pumps vary depending on the brand or the company that manufactures them, pumps are into three main types. The three types of fuel pumps have different operating methods since the technology of their manufacture is different.

Fuel Pumps Classification

It is essential to understand the functionality of the different types available in the market to determine which fuel pump is suitable for your car. Each type has characteristics that differentiate it from the other kinds. The three major types of fuel pumps are mechanical fuel pumps, electric fuel pumps, and high-pressure pumps.

Mechanical fuel pump

If you are looking for a pump with low pressure, then a mechanical fuel pump is the best choice. However, this does not limit the pump from performing high-pressure operations. Mechanical fuel pumps are in two categories; fuel pumps with diaphragm and fuel pumps with a plunger. Mechanical pumps have many moving parts; therefore, they require more maintenance.

Fuel pumps with diaphragm

These kinds of fuel pumps operate by sucking fuel with the help of the movement of a diaphragm. They have two check valves; the inlet and the outlet valves. The movement of the diagram results from the cam's motion.

Fuel pumps with a plunger

Fuel pumps with plungers operate almost the same way as the diaphragm type but function with a plunger instead of a diaphragm. The movement of the plunger backward allows the sucking of fuel to the delivery cylinder. The plunger's forward movement allows fuel delivery to the engine through the cylinder.

Electric fuel pump

Electric types of fuel pumps are ideal for cars with injection systems. Most people use electric fuel pumps since the modern, and newer car models have an injection fuel system. Unlike the mechanical pumps, the electric type transfer gas to a car's engine by creating high pressure. An electric pump's energy source comes from the car's battery. The battery can provide the right amount of electric current that the pump needs to deliver fuel to the engine. The pump has an electronic control unit that manages the pressure and fuel volume from the fuel tank. That ensures that the car has moderated fuel consumption.

High-pressure fuel pump

High-pressure fuel pumps allow the transfer of gas to the combustion chamber directly. This kind of fuel pump works on vehicles that have an engine that enables combustion ignition. The pumps have a solid structure to handle the high pressure associated with their functioning. High-pressure pumps come with a metering unit, flow rails, and distribution unit to prevent wastage or fueling more than required. High-pressure fuel pumps are the best option if an individual is looking for prolonged durability in a pump.


With the vast types of fuel pumps available, there may be a lot of confusion in the selection process. Before settling on one specific kind, an individual must consider the fuel pressure, durability, ability to fit in different car models, and cost. If working on a budget, one can get a fuel pump that delivers the same performance as an expensive pump but at an affordable price.