electric oil pump

Description

An electric oil pump is a device that uses an electric motor to drive the transfer of liquids such as fuel or lubricating oil from one location to another, while providing a certain level of pressure and flow rate. It is widely used in fields such as automobiles and industrial equipment. The following is a detailed introduction:
Working Principle
An electric fuel pump consists of three parts: the pump body, DC motor, and housing. When the DC motor is energized, it drives the rotor inside the pump housing to rotate at high speed. The rotor shaft then drives the impeller to rotate in the same direction. The impeller creates a vacuum and low pressure at the oil inlet, sucking fuel in through the inlet. After being pressurized, the fuel is pushed out through the oil outlet, supplying pressurized fuel to the fuel system.
Types
Positive Displacement Pumps: These pumps draw in and discharge oil by changing the volume of the pump chamber. Examples include roller pumps, gear pumps, and vane pumps. They operate at relatively high pressures but have intermittent oil delivery, resulting in greater oil pressure fluctuations, vibration, and noise.
Hydrodynamic Pumps: These pumps drive the flow of fuel using a pump impeller, generating oil pressure by leveraging changes in fuel momentum. Examples include axial flow pumps, centrifugal pumps, turbine pumps, and side-channel pumps. They have minimal pressure fluctuations and operate at relatively low pressures, making them suitable for scenarios requiring large oil flow rates and low oil pressure.
Common Applications