The Bosch fuel pump is an essential component of the vehicle's power system. With their help, fuel is supplied to the car engine. This important part serves to connect the fuel tank and the engine, which are located at some distance from each other. In previous brands, fuel pumps were not provided, since fuel entered the engine through a gasoline hose under the influence of gravity.
Varieties of petrol pumps
Today, car manufacturers equip their products with mechanical or electric type fuel pumps. The former are used in carburetor-type cars. In them, fuel under reduced pressure conditions is in the carburetor. Electric fuel pumps, on the other hand, supply fuel to the engine when high pressure is applied.
Fuel pumps don't break often these days. As a rule, sloppy car drivers are to blame.
Main causes of breakdowns:
- cloggingfuel filters;
- driving with empty gas tanks.
When these reasons are present, the Bosch fuel pump operates at full capacity, which means it wears out much faster.
Drivers must comply with the requirements:
- ensure at least half filling the gas tank;
- monitor the condition of the fuel filters.
Mechanical fuel pumps deliver fuel from the fuel tank to the engine. They do not require high pressure as they are close together.
Electric fuel pump
The Bosch electric fuel pump uses a higher pressure than a mechanical one. The high pressure allows fuel to be pushed directly into the engine. In previous generations of vehicles, the fuel pump functioned continuously. In modern gasoline pumps, the speed of its operation is determined only by the requirements of the device. This type of fuel pump is controlled by the vehicle's electronic system. It automatically calculates the throttle position, exhaust composition and the proportion of fuel in the air mixture.
Be aware that electric fuel pumps are loud and hot as the engine is supplied with pressurized fuel. Therefore, such pumps are located in the gas tank, which makes it possible to achieve cooling of the fuel pump with the help of fuel. Additionally, it can be noted that such an arrangement of the fuel pump makes its operation almost silent.
The electric pump is controlled by the electric motor signal. After setting the ignition switch to the on mode, the car computer gives a signal that the fuel pump has started, and a charge of electricity is supplied to it. The engine, which is located inside the fuel pump, rotates for some time, raising the pressure in the fuel system. If there is no signal from the computer to start the engine for more than two seconds, the fuel pump is immediately turned off for safety reasons.
It is in the first seconds after the start of the engine that the driver hears how the pump works. Further, the fuel enters the fuel pump through a special tube, after which it enters the benzo filter, which cleans the fuel mixture from contaminants. It is for this purpose that the fuel filter needs to be changed periodically. This allows you to achieve effective cleaning of the fuel. At the next stage, pre-cleaned fuel enters the engine. The fuel pump runs until the engine shuts off.
Pump for VAZ
For the VAZ-2110 car, the Bosch electric fuel pump is used most often, because it has universal dimensions, is constantly on sale and is not very expensive.
Bosch model for VAZ
The manufacturer supplies a separate device for each type of fuel supply system.
The performance of the Bosch fuel pump for the VAZ-2110 is 3-3.8 bar.
A significant number of car owners, after the failure of a regular fuel pump, change it to a Bosch pump operating in high pressure modes. This parameter of the fuel pump is not able to affect fuel consumption, since the car is equipped with a return line, due to which excess fuel must be returned back to the tank. Additionally, a fuel pressure regulator is provided. Fuel costs may increase when the rail cannot be pressurized optimally. As a result, the nozzles are already functioning incorrectly - they do not spray, but simply pour fuel that does not burn.
Design
The Bosch fuel pump device is like this. The main part is the body, which has fittings for inlet and outlet.
It contains a DC electric motor with a roller pump, two valves and two threaded studs for power connection.
Model parameters 0580453453
The 2110 Bosch fuel pump can have different options. Different models may have a different length or diameter of the case. The diameter of the housing can be adjusted by means of gaskets made of rubber resistant to gasoline. In addition, fuel pump options may have different pressures and the location of the chips on the terminals. The mesh of the device has the same number of seats, but may have a different shape.
The chip can be converted to a terminal or a variant from a VAZ car can be installed. The length of the fuel pump determines its performance in low fuel tank conditions.
For example, for Bosch model 0580453453 the length is 105 mm, 0580453449 is 6.5 cm long, 0580453465 is 9.0 cm long.
The fuel pump is located in the gas tank of the car, being immersed in fuel. An electric motor is located inside, which serves as a drive for the pump element. A combination of fuel pump assemblies delivers fuel at high pressure. As a result, the fuel pump is noisy and requires cooling. This problem is solved by immersing the pump in the fuel tank. Fuel cools hot equipment and dampens noise.
The right choice of fuel pump
A fuel pump for a VAZ-2110 purchased on the market will cost half as much as the same model purchased at a specialized auto shop. However, the store is more likely to get a quality part.
The Bosch high pressure fuel pump is enclosed in a strong sealed package. The package contains high-purity gasoline. If you smell gasoline, it means that there is a leak in the packaging and there is a risk of corrosion damage in the fuel pump.
Submerged equipment is lubricated and cooled with fuel. If poor quality additives are used in the fuel, the electrical mechanisms of the fuel pump may be corroded. 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 a Bosch fuel pump that has deviated from normal performance due to long-term use. The pump pressure must be 7atmospheres.
Fuel pump malfunctions
Let's talk about fuel pump failures, how to find and fix them. The least prone to failure pump component is the electric motor. The explanation for this is the mode of its operation, which allows for intensive cooling and constant flushing. The centrifugal slide hydraulic supercharger breaks most often. Due to the presence of the smallest solid impurities that end up in the gas tank along with gasoline, the rubbing parts of the supercharger (rotor, stator, rollers) are subject to significant wear over time. At the same time, the seals between them become weaker. As a result, work efficiency is lost and the operating pressure provided by the fuel pump drops. This problem occurs due to the aging of the fuel pump. In the initial period of use, it is practically not detected. It is possible to determine it on a special stand to check the drop in productivity and the pressure provided at the outlet fitting. If the fuel pump accumulates defects as a result of aging, the vehicle loses throttle response and the internal combustion engine begins to malfunction when it goes through transients. If the wear becomes significant, the pressure drop in the power circuits can reach such proportions that the motor cannot be started.
Signs of breakdowns
A malfunction of the fuel pump is indicated by an increase in noise during its operation. This indicates the natural wear of the supercharger or severe scuffing of its rubbing parts. This troubleIt often manifests itself in winter due to the fact that moisture gets into gasoline, which then becomes ice. The resulting ice crystals fall into the millstones of the fuel pump, abrading and tearing the parts of the supercharger, forming deep cavities on their surface. Often, defects appear in the guide grooves of the supercharger rotor.
The plain bearings in the electric fuel pump rarely fail before the supercharger parts. The main cause of problems with the normal functioning of the fuel pump is the abrasion of the rubbing parts of the supercharger.
Gasoline pump repair
In general, the Bosch VAZ fuel pump, along with any others, is not recommended to be repaired. In the event of a malfunction, they usually need to be replaced. But in real life, if you can skillfully open the rolling of the aluminum pump housing, the subsequent steps to repair and restore 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 examined. Particular attention should be paid to the hydraulic supercharger. If it is repairable, then you can decide to repair the fuel pump.
Be sure to replace the brushes in the electric motor. They can be taken from a similar electric fuel pump. You also need to pierce the manifold. If damage is found to the motor armature winding, it must be rewound. When rewinding, you need to pay special attention to maintaining the fuel channels available in the anchor grooves. Centrifug althe blower is collapsible. It is necessary to grind the damaged surfaces of the rubbing parts of the supercharger assembly.
The grain of the grinding stone should not exceed 50 microns. Slight wear on the rotor slots is not essential to engine performance and can be left unmachined. Just when the reassembly is carried out, the rotor of the vane pump fits into its stator on the other side. If there are large scuffs of the rollers, they need to be changed using domestic bearings as donors. If it is not possible to change the rollers, their ends must be ground on a magnetic table in a rolled mandrel.
There is one more detail, often in severe frosts leading to a breakdown of a completely new fuel pump. This is a clutch fork. This component is considered non-replaceable. But even the clutch fork can be replaced. This requires complex lathe repairs to anchor the pump motor.
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 firmly fit a new one onto the resulting groove.
The renewed fork is fixed with dental cement or micro screws. A combination of these two mounting methods is also possible. It is not necessary to grind a fork to replace it from plastic. Better if it is aluminum or bronze.
A well-done interior repair can go down the drain if the outer cup of the electric fuel pump is not securely folded. Usually, it is possible to open and roll the glass back only once. And then, it requires the highest qualification in carrying out these operations. Opening the glass is preferably carried out manually, for example with a blunt screwdriver. Since under the rolling there is a rubber gasket, which has the shape of a flagellum with a round cross section. You have to make sure she doesn't get hurt. Reverse rolling can be done by running in using a lathe. You can fix the fuel pump on the lathe, as well as achieve pressing the glass to the body, by making a special tool.
Repair kit
The Bosch fuel pump repair kit, consisting of rubber products, will help make repairs.
All of the above shows that your desire alone is not enough for the fuel pump to be repaired with high quality. It also requires the presence of a high professionalism of the master and special equipment. This repair technique can only be implemented at equipped service stations. In addition, large stations have a large number of used parts that can be used. If these conditions are met, two-thirds of the total number of failed fuel pumps can be repaired qualitatively.
Real life proves that once reconditioned, fuel pumps can run for quite some time.
Reviews
Car owners who have used a Bosch fuel pump speak mostly favorably of it. Among its advantages is called low price, reliability, durability. The minuses arenoisy work.
