What are the two types of installation locations for electric gasoline pumps?

Gasoline pump installation location.

Built-in - integrated with the assembly, vertically installed in the fuel tank, characterized by low noise, not easy to produce air resistance, safety, pipeline installation cylinder sheet.

External-mounted - connected in series to the oil pipeline outside the fuel tank, characterized by large degree of installation freedom, easy replacement, and high air tightness requirements.

The electric fuel pump, also known as the electric gasoline pump, is used to pump the combustion gasoline from the fuel tank into the fuel line, and keep the fuel at a certain pressure to provide fuel nozzles and cold start valves. The role is used in gasoline or diesel engines.

The fuel supply system transports the fuel from the fuel tank to the engine.

Electric fuel pumps are divided into roller type, turbine type, rotor type and side groove type according to different structures. According to the different installation positions, it can be divided into built-in type (installed in the fuel tank, with the characteristics of low noise, not easy to produce air resistance, not easy to leak, and simple pipeline installation), external type (connected in series in the fuel pipeline outside the fuel tank, easy to arrange, large degree of installation freedom, high noise, easy to produce air resistance). The fuel pump pumps out the fuel from the fuel tank and delivers it to the injector through the fuel filter, fuel pressure regulator, and oil distribution pipe under a certain pressure.

The structure of the oil pump.

Vane pumps (turbines.

pump) turbine pump.

CharacteristicsThe pulsation of the pump oil pressure is small, the operation is stable, the noise is small, the oil supply system does not need a pulsation damping damper, it is easy to be small and miniaturized, but the conveying efficiency is low.

Positive displacement pump, roller type, rotor type, sliding vane type.

CharacteristicsThe pump oil pressure is high, but because of its discontinuous operation, the oil pressure pulsation is large, so it is necessary to install a pulsation damping shock absorber at the oil end of the gasoline pump.

The principle of an electric gasoline pump.

Turbine electric fuel pump mainly consists of an electric motor, a turbine pump, and a check valve.

Safety valve composition. When the fuel pump is energized, the electric motor drives the turbine pump blades to rotate due to centrifugal force.

The blades in the small groove around the impeller are close to the pump casing, bringing the fuel from the inlet chamber to the outlet chamber.

Due to the increasing amount of fuel in the inlet chamber, a certain vacuum degree is formed.

sucking fuel in through the intake; The fuel in the outlet chamber continues to increase, the fuel pressure rises, and when it reaches a certain value, the oil outlet of the top open oil outlet valve is output. The outlet valve prevents fuel from flowing back into the tank when the fuel pump is not working, keeping a certain pressure in the oil circuit for the next start-up. This kind of fuel pump has the advantages of large pump oil volume, high pump oil pressure, stable oil supply pressure, low operating noise and long service life.

Hello landlord The electric fuel pump is installed inside the fuel tank and is soaked in fuel to prevent air blockage. There are two main types of electric fuel pumps: vane type and roller type. Hope.

Electric gasoline pumps can be divided into the following three types: (1) Roller type electric gasoline pump is composed of a shell, cylindrical rollers and rotors, etc. The five rollers slide radially in the rotor groove, and there is a certain eccentricity between the rotor and the housing.

The rotor rotates under the drive of a DC motor, and under the action of centrifugal force, the roller is pressed against the inner circular surface of the pump body, forming five relatively independent sealing cavities. As it rotates, the volume of each sealing chamber changes constantly, and at the inlet, the volume increases, creating a certain vacuum that sucks the filtered gasoline into the pump. At the oil outlet, the volume becomes smaller, the pressure rises, and the gasoline passes through the DC motor to push open the check valve output.

When the oil pipeline is clogged or the gasoline filter is blocked, the gasoline pressure exceeds the specified value, the pressure limiting valve is opened, and the gasoline flows back to the inlet side. (2) Vane gasoline pump: The vane pump is a pump in which the blades in the rotor groove are in contact with the pump casing (stator ring) and press the inhaled liquid from the oil inlet side to the oil discharge side.

3) Gear gasoline pump: gear pump is a kind of positive displacement pump, composed of two gears, pump body and front and rear covers to form two closed spaces, when the gear rotates, the volume of the space on the disengagement side of the gear changes from small to large, forming a vacuum, sucking the liquid, the volume of the space on the gear meshing side changes from large to small, and the liquid is squeezed into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of the two gears.

The structure of the electric fuel pump is composed of three parts: the pump body, the permanent magnet motor and the shell, the permanent magnet motor is energized to drive the pump body to rotate, the fuel is sucked in from the oil inlet, flows through the inside of the electric fuel pump, and then presses out from the oil outlet, and the fuel is supplied to the fuel system, and the fuel flows through the inside of the electric fuel pump to cool the armature of the permanent magnet motor, also known as the wet fuel pump.

Electric fuel pumps are usually installed inside the fuel tank, which is mainly composed of oil pump, electric motor, safety valve, check valve and housing.

Filter, oil pump, DC motor, check valve, safety valve, etc.

The electric fuel pump of the automobile is composed of an electric motor, a pressure limiter, and an inspection valve, and the electric motor actually works in the fuel in the oil pump housing.

The electric fuel pump consists of three parts: the pump body, the DC motor and the housing. Its basic working principle is that the DC motor is energized and drives the rotor in the pump casing to rotate at high speed, the section of the lower end of the rotor shaft is combined with the inner hole section of the impeller, so that when the rotor rotates, the impeller is driven to rotate in the same direction through the rotor shaft, and the impeller causes vacuum low pressure in the oil inlet part during the high-speed rotation process, and then the fuel that has been filtered is sucked in from the oil inlet of the pump cover, and the fuel absorbed enters the inside of the pump casing after being pressurized by the fuel pump impeller and then pressurized out through the oil outlet. Fuel supply the fuel system with a certain pressure. The structure of the DC motor consists of a permanent magnet fixed to the inner wall of the pump casing, a rotor capable of generating a magnetic moment when energized, and a graphite carbon brush assembly mounted on the upper end of the pump casing.

The carbon brush is in elastic contact with the commutator on the armature rotor, its leads are connected to the plug-in wiring electrodes of the housing, and the two ends of the outer part of the electric fuel pump casing are riveted with crimping edges to become a non-detachable assembly.

Electric fuel pumps, also known as electric gasoline pumps, are used to pump burning gasoline from the fuel tank into the fuel line and keep the fuel at a certain pressure to provide fuel nozzles and cold-start valves. In the fuel supply system of a gasoline or diesel engine, it is used to deliver fuel from the tank to the engine.

The structure of the electric gasoline pump The electric fuel pump is divided into roller type, turbine type, rotor type and side groove type according to the different structures. According to the different installation positions, it can be divided into built-in type and external type. The fuel pump pumps out the fuel from the fuel tank and delivers it to the injectors through fuel filters, fuel pressure regulators, fuel distribution lines, etc.

Under a certain amount of pressure.

The installation location of the gasoline pump.

It is integrated with the assembly and installed vertically in the fuel tank, which has the characteristics of low noise, low wind resistance, safety and single-pipe installation.

External - the oil pipe connected in series outside the oil tank has the characteristics of large installation freedom, easy replacement and high air tightness requirements.

The structural form of the oil pump.

Vane pumps, turbine pumps.

Features: The pump oil pressure pulsation is small, the operation is stable, and the noise is low. The oil supply system does not require pulsation damping shock absorbers, which is easy to miniaturize, but the conveying efficiency is low.

Positive displacement pump roller rotor type sliding vane.

CharacteristicsThe oil pressure of the pump is high, but due to its discontinuous work and large oil pressure pulsation, it is necessary to install a pulsation damping damper at the oil outlet end of the gasoline pump.

Electric gasoline pump principle.

Turboelectric fuel pumps are mainly composed of an electric motor, a turbine pump, a check valve, and a safety valve. When the fuel pump is energized, the motor drives the blades of the turbine pump to rotate. Due to centrifugal force, the blades in the small grooves around the impeller are close to the pump casing, and the fuel is sucked from the inlet chamber to the outlet chamber.

Due to the increase of fuel in the oil inlet chamber, a certain vacuum degree is formed, and the fuel is sucked in from the oil inlet; However, the fuel in the outlet chamber continues to increase and the fuel pressure rises. When a certain value is reached, the outlet of the outlet valve is pushed open for output. The outlet valve prevents fuel from flowing back to the tank when the fuel pump is not working, and maintains a certain pressure in the oil circuit for the next start-up.

This fuel pump has the advantages of large pump oil volume, high pump oil pressure, stable oil supply pressure, low operating noise and long service life. In addition, because there is no muffler, it can be miniaturized, so it is widely used in automobiles, such as the Volkswagen Jetta ( Price |Detailed description of the model), Honda, Accord, etc. 2019

Electric fuel pumps, also known as electric gasoline pumps. Its main function is to introduce combustion gasoline from the fuel tank into the fuel line, and supply fuel to the fuel nozzle and cold start valve at a certain pressure. These pumps are mainly used in gasoline or diesel engines to deliver fuel from the fuel tank to the engine.

Depending on the installation location, it is also divided into built-in and external. Built-in installation on the fuel tank, low noise, not easy to produce air resistance, safety, filter cartridge installed on the pipeline; The external type is connected to the pipeline outside the fuel tank, with a large degree of installation freedom, easy replacement and high air tightness. In addition, according to the different structures, electric fuel pumps can be divided into roller type, turbine type, rotor type and side groove type.

Vane pump is a type of electric fuel pump, which is characterized by small pump oil pressure pulsation, stable operation, low noise, oil supply system does not need pulsation damping fiber, easy to miniaturize, but low transportation efficiency. Positive displacement pump roller type and sliding type also have corresponding characteristics. A turbine electric fuel pump is made up of an electric motor, a turbine pump, a check valve, and a safety valve.

After the fuel pump is energized, the turbine pump blades rotate under the action of the electric motor, and the blades in the small groove around the impeller are in close contact with the pump housing under the action of centrifugal force, bringing the fuel from the suction chamber to the discharge chamber. Due to the increase of fuel in the suction chamber, a certain vacuum response degree is reached, and the fuel is sucked from the suction inlet; On the other hand, the fuel in the oil chamber continues to increase, and the fuel pressure rises, and when it reaches a certain value, the oil outlet of the oil valve is pushed open for output. The oil valve prevents the fuel from returning to the tank when the fuel pump is not working, and maintains a certain pressure in the oil circuit for easy starting the next time.

The fuel pump has the advantages of large pump oil volume, high pump oil pressure, stable oil supply pressure, low operating noise and long life. Since it does not require a scarf, it can be miniaturized and widely used in cars such as Volkswagen and Honda Accord. In short, the above is the knowledge of the structure and principle of electric gasoline pumps, as well as the installation location of gasoline pumps.

1. Filter, only filter the impurities of gasoline in the old state and large particles, long-term use may block the Huisai, after blocking, it can be cleaned with a reply, 2 oil pumps, linear linear DC motors.

Yes, the rotary pump oil that rotates under the drive is a rolling pump gear pump according to the different structures.

Turbine pump, 3, DC motor, go to the power on, electric drive the gasoline pump to rotate the balloon, through the inside of the motor to make the motor cool, 4, check valve.

Only fuel is allowed to pass through the gasoline in one direction, and through the one-way also into the filter climate, the fuel distribution is reached.

The electric gasoline pump is mainly composed of two parts: the electromagnetic sail dust drive structure and the fuel supply structure.

The gasoline pump refers to different devices in EFI trucks and non-EFI trucks, and this article aims at the gasoline pump of EFI trucks, that is, the state of the gasoline pump is installed in the fuel tank and immersed in the fuel, that is, the electric fuel pump. Purpose: Boosts gasoline and continuously pumps it into the oil supply pipeline.

**Excess oil is supplied to the distribution pan to maintain the operating pressure of the injection system: It is installed in a noisy manner near the fuel tank.

The control mode of electric gasoline pump is mainly divided into several stages: 1. Fuel injection volume control. The electronic control unit (ECU) calculates the injection pulse width according to the signals provided by the air flow sensor or the intake pressure sensor, the engine speed sensor, the intake air temperature sensor, the cooling water temperature sensor, etc., and the optimal fuel injection amount of the engine under various working conditions is stored in the memory of the electronic control unit; 2. Fuel injection timing control.

When the engine adopts the multi-point sequential fuel injection system, in addition to controlling the injection amount, the electronic control unit also needs to control the optimal injection time according to the ignition sequence of each cylinder of the engine, so that the gasoline can be fully combusted; 3. However, in the electronically controlled intermittent injection system, the electronic control unit also adopts independent injection, and the electronic control unit also analyzes the cylinder identification signal of the injector, and controls the injection time at the best moment according to the ignition sequence of the engine cylinder and the working state of the e engine of the engine cylinder.

What is the use of an electric fuel pump|What are the different types?

According to the different installation positions, it can be divided into two types: built-in and external. The built-in fuel pump is installed in the fuel tank, which has low noise, is not easy to produce air resistance, is not easy to leak, and the pipeline installation is simple. The external fuel pump is connected in series in the oil pipeline outside the fuel tank, which is easy to arrange and has a large degree of freedom of installation, but it is noisy and easy to produce air resistance, and is used in a few models.

What are the different types of electric fuel pumps? At present, the electric fuel pumps installed on various models are divided into turbine type, roller type, rotor type and side groove type due to different structures. The details are as follows:

Turbo electric fuel pump.

The turbine electric fuel pump is mainly composed of an electric motor, a turbine pump, an oil outlet valve and a pressure relief valve.

When the oil pump motor is energized, the motor drives the turbine pump blades to rotate, and due to the action of centrifugal force, the blades in the small groove around the impeller are close to the pump casing, bringing the fuel from the inlet chamber to the outlet chamber. Due to the continuous increase of fuel in the inlet chamber, a certain vacuum degree is formed, and the fuel is sucked in from the oil inlet; The fuel in the outlet chamber continues to increase, the fuel pressure rises, and when it reaches a certain value, the oil outlet of the top open valve is output. The outlet valve prevents the fuel from flowing back to the tank when the oil pump is not working, and maintains a certain pressure in the oil circuit for the next start-up.

The turbine electric fuel pump has the advantages of large oil volume, high pump oil pressure, stable oil supply pressure, low operating noise and long service life. In addition, since it does not require a muffler, it can be miniaturized, so it is widely used in sedans, such as the Jetta and Honda Accord.

Roller type electric fuel pump.

The roller type electric fuel pump is mainly composed of an electric motor, a roller fuel pump, an oil outlet valve and a pressure relief valve.

When the rotor rotates, the rollers located in the rotor groove press against the inner surface of the pump under the action of centrifugal force, which seals the surroundings and forms a working cavity between the adjacent two rollers. In the process of fuel pump operation, after the working cavity turns the oil outlet, its volume continues to increase, forming a certain vacuum degree, and when it is transferred to communicate with the oil inlet, the fuel is sucked in; After the working cavity full of fuel is turned to the oil inlet, the volume continues to decrease, so that the fuel pressure increases, and the pressurized fuel flows through the motor and outputs from the oil outlet.