Bosch fuel pump: characteristics, device, performance and feedback

The Bosch fuel pump is the most important component of the power system of cars. With their help, fuel is supplied to the engine of the car. This important part serves to connect the fuel tank and the engine, located at some distance from each other. In previous brands, fuel pumps were not provided, since the fuel was supplied to the engine by a gasoline hose under the action of gravity.

Varieties of gasoline pumps

Nowadays, car manufacturers equip their products with fuel pumps of a mechanical or electrical type. The former are used in cars of the carburettor type. In them, fuel under reduced pressure is in the carburetor. Electric fuel pumps, by contrast, organize the supply of fuel to the engine under high pressure.

Now, fuel pumps do not break often. As a rule, inaccurate drivers of cars are to blame for this.

Main causes of breakdowns:

• Clogging fuel filters;
• Driving with empty gasoline tanks.

In the presence of these reasons, the Bosch fuel pump functions at its full capacity, which means it wears out much faster.

Drivers must comply with the requirements:

• Provide at least half the filling of the gas tank;
• To monitor the serviceability of fuel filters.

Mechanical fuel pumps provide fuel from the fuel tank to the engine. They do not require the presence of high pressure, because they are located close to each other.

Electric fuel pump

The Bosch electric fuel pump uses a higher pressure than the mechanical one. High pressure allows you to push fuel directly into the engine. In the models of cars of previous generations, the fuel pump functioned continuously. In modern gasoline pumps, the speed of its operation is determined only by the requirements of the device. The operation of fuel pumps of this type is controlled by the electronic system of the car. It automatically calculates the position of the throttle, the composition of the exhaust and the proportion of fuel in the air mixture.

It must be taken into account that the electric fuel pumps work loudly and are heated, since the engine is supplied with fuel under pressure. Therefore, such pumps are located in the gas tank, which makes it possible to achieve cooling of the fuel pump with fuel. In addition, it can be noted that this arrangement of the gasoline pump makes its operation almost noiseless.

The electric pump is controlled by the motor signal. After the ignition switch is turned on, the car computer signals that the petrol pump has been started and is charged with electricity. The engine, which is located inside the gasoline pump, rotates for a while, raising the pressure in the fuel system. If the signal from the computer to start the engine no longer than two seconds, the petrol pump is instantly disconnected for security reasons.

It is in the first seconds after the engine starts that the driver hears how the pump works. Then the fuel gets into the fuel pump by a special tube, after which it enters the gas filter, which cleans the fuel mixture of dirt. It is for this purpose that the fuel filter needs periodic replacement. This makes it possible to achieve effective fuel purification. At the next stage, pre-cleaned fuel enters the engine. The fuel pump operates before the engine is switched off.

Pump for VAZ

For the VAZ-2110, the fuel electric Bosch pump is used most often, since it has universal dimensions, is constantly on sale and is not very expensive.

Model Bosch for VAZ

Under each type of fuel supply systems, the manufacturer supplies an independent device.

The performance of the Bosch fuel pump for VAZ-2110 is 3-3.8 bar.

A significant number of car owners after the failure of a regular petrol pump change it to a pump from Bosch, operating in high-pressure modes. This fuel pump parameter is not able to affect fuel consumption, since the car is equipped with a return flow, due to which excess fuel is to be returned back to the tank. In addition, a fuel pressure regulator is provided. Fuel costs can increase when the ramp fails to create the optimum pressure. As a result, the injectors are already functioning incorrectly - they do not spray, but simply pour fuel that does not burn.

Design

The arrangement of the Bosch fuel pump is as follows. The main part is the body, which has fittings for inlet and outlet.

Inside it there is an electric DC motor with a roller pump, two valves and two studs on the thread for connecting the power.

Parameters of the model 0580453453

The Bosch fuel pump 2110 can have different parameters. Different models may have different length or diameter of the body. Adjust the diameter of the body can be by means of gaskets made of rubber, resistant to gasoline. In addition, the fuel pump options may have different pressure and the location of the chips on the terminals. The network of the device has the same number of seats, but it can have a different shape.

The chip can be converted to a terminal or an option is installed from the car VAZ. The length of the fuel pump determines its functioning under conditions of a small amount of fuel in the gas tank.

For example, for the Bosch model 0580453453 the length is 105 mm, 0580453449 - the length is 6.5 cm, 0580453465 is the length of 9.0 cm.

The fuel pump is located in the gasoline tank car, being immersed in fuel. Inside there is an electric motor, which serves as a drive for the pump element. The combination of fuel pump units produces fuel at high pressure. As a result, the fuel pump is noisy and requires cooling. This problem is solved by submerging the pump in the fuel tank. The fuel cools the heated equipment and suppresses the noise.

Correct choice of gasoline pump

The fuel pump for VAZ-2110, bought on the market, will cost two times cheaper than the same model purchased in a specialized auto store. However, the store is more likely to get a quality item.

The Bosch high-pressure fuel pump is enclosed in a tight, sealed package. The package contains high-purity gasoline. If you feel a gasoline smell, then there is a breach of the tightness of the package, and there is a risk of corrosion damage in the gasoline pump.

Equipment in the immersed state is lubricated and cooled by fuel. If low-quality additives are used in the fuel, the electrical mechanisms of the gasoline pump may be corrupted. If the device is operated dry without the use of additional substances, the brushes are erased and it overheats.

Many car owners intend to replace the Bosch fuel pump, the characteristics of which deviate from normal values due to prolonged use. The pressure of the pump must correspond to 7 atmospheres.

Malfunctions of gasoline pumps

Let's talk about the malfunctions of fuel pumps, the methods of their search and elimination.
The least susceptible to failures is the motor component of the pump. An explanation of this is the mode of its operation, which allows for intensive cooling and constant washing. The most frequently broken centrifugal slide hydrocharger. Due to the presence of the smallest solid impurities found in the gasoline tank along with gasoline, the friction parts of the blower (rotor, stator, rollers) are subject to considerable wear over time. At the same time, seals between them become weaker. As a result, the efficiency of the work is lost and the working pressure provided by the fuel pump falls. This problem occurs due to the aging of the fuel pump. In the initial period of use, it is practically not detected. It can be determined on a special test bench to check the performance drop and the pressure provided on the outlet nozzle. If the fuel pump accumulates defects as a result of aging, the car loses its acceleration and starts intermittent operation of the internal combustion engine when it passes the transient regimes. If wear becomes significant, the pressure drop in the supply circuits can reach such a size that the motor can not start.

Signs of breakdowns

The malfunction of the fuel pump is indicated by the increase in noise during its operation. This indicates the natural wear of the supercharger or strong scuffs of its rubbing parts. This trouble is often manifested in the winter due to the fact that the gasoline gets moisture, which then becomes ice. Emerging crystals of ice fall into the mill of the fuel pump, rubbing and picking up the parts of the supercharger, forming deep caverns on their surface. Often, defects appear in the guide grooves of the rotor of the supercharger.

The slide bearings that are part of the electric fuel pump rarely become unusable before the parts of the supercharger. The main cause of problems with the normal functioning of the fuel pump is the abrasion of friction parts of the supercharger.

Repair of gasoline pumps

In general, the Bosch Bosch fuel pump, along with any other repair is not recommended. In case of malfunction, they usually need to be replaced. But in real life, if it is possible to skillfully open the rolling of the aluminum pump casing, the subsequent actions for repair and restoration of the fuel pump are not a big problem.

When the Bosch high-pressure fuel pump is opened and completely disassembled, all its components must be carefully inspected. Special attention should be paid to the hydraulic turbocharger. If it is repairable, then you can decide to repair the fuel pump.

It is necessary to replace in the electric motor of the brush. They can be taken from a similar electric fuel pump. You also need to drain the collector. If there is any damage to the winding of the motor armature, it is necessary to rewind it. While rewinding, we need to pay special attention to preserving the fuel channels available in the anchor grooves. The centrifugal supercharger is collapsible. It is necessary to polish the damaged surfaces of the friction parts of the supercharger assembly.

The grain of the grinding stone should not exceed 50 microns. A small wear of the rotary grooves is not essential for the operation of the engine, and they can not be subjected to treatment. Simply when the reverse assembly is performed, the rotor of the slide pump is placed into its stator by the other side. If there are big scuffing of the rollers, they need to be changed, using domestic bearings as donors. If there is no possibility of changing the rollers, they need to be ground on a magnetic table in a revolving mandrel.

There is one more detail, often with severe frosts leading to the breakdown of an entirely new fuel pump. This is a coupling fork. This component is considered to be irremovable. But even the coupling fork is available to replace. This requires carrying out complex turning repairs with the pump motor anchor.

It is necessary with the utmost care and precision, with a special cutter, to make a groove in the body of a plastic fork and to insert a new groove firmly on the resulting groove.

An updated fork is fixed with dental cement or with micro-screws. A combination of these two mounting methods is also possible. Do not turn the fork on a replacement plastic. It is better if it is aluminum or bronze.

A well-made repair of the inner filling can go wrong if the outer glass of the electric fuel pump is not securely wound. Usually, it is possible to open and roll the glass back only once. And then, this requires the highest qualification in carrying out these operations. Opening the beaker is preferably done manually, for example, using a blunt screwdriver. Since under the rolling is a gasket made of rubber, which has the shape of a flagellum with a circular cross section. We must strive to ensure that it does not suffer. Reverse rolling can be done by rolling in using a lathe. To fix the fuel pump on the lathe, and also to achieve pressure of a glass to the case it is possible, having made special equipment.

Repair kit

Repair will help repair the Bosch fuel pump, consisting of rubber products.

Everything described above shows that one of your desires is not enough, so that the repair of the fuel pump can be carried out qualitatively. It is still necessary to have a high professionalism of the master and special equipment. This method of repair is realized only on equipped SRT. In addition, large stations have a large number of used parts that can be used. When these conditions are met, two-thirds of the total number of failed fuel pumps can be repaired in a qualitative way.

Real life proves that after the restoration of fuel pumps are able to work quite a long time.

Reviews

The car owners, who used the Bosch fuel pump, speak about him mostly benevolently. Among its advantages is low price, reliability, durability. Noisy work is noted as minuses.