Fuel pump performance: electric pumps from Bosch

Gazelle fuel pump performance

I decided to write about my replacement of the fuel pump with a more productive one from the Gazelle (everyone will laugh and say that it’s a collective farm, but this is a good replacement and tuning).
Our Fedors have a fuel pump with a capacity of up to 90 l/hour, after my pump died (at night) I installed it according to reports from the FF club from a VAZ 2110 No. 0 580 453 453

I didn’t see any difference with the original, but since I am still the owner of a gazelle car. Therefore, I know that in terms of the dimensions of these vehicles, the only differences are the same in performance and spare part number from the gazelle 120 l/h No. 0 580 454 001

and here is a photo of our dear b/n.

Good luck to everyone on the roads!

Added a photo with a cutting line.

FITS ONLY 1.8 AND 2.0; they have injectors with a capacity of 150 g/min. 1.6 has injectors with a capacity of 105 g/min.

WEBER electric fuel pumps are a high-quality certified product, excellent for working in harsh climatic and operating conditions. WEBER electric fuel pumps ensure an uninterrupted supply of fuel to the fuel line of injection engines of cars and trucks, maintaining its pressure in the operating range under any engine operating conditions.

The design of WEBER electric fuel pumps is based on the knowledge and experience of highly qualified designers and engineers of the modern automotive industry. When creating, innovative technologies from world leaders in the production of auto components are used, the most modern and high-quality materials are used.

A filter element is installed at the inlet, providing protection from the destructive effects of large particles. The working fluid, the impeller, has a unique design. The number and geometry of the blades have been optimized, which at the same rotation speed provides increased pressure and performance, while reducing vibration loads on the pump motor. The special design of the impeller ensures intensive cooling of the pump elements by the pumped fuel, increasing the service life of the windings and bearings, and minimizes the negative impact of mechanical impurities, water, ice, which are often found in domestic gasoline. The electric motors of the pumps are highly reliable and, despite the continuous exposure to the smallest solid particles, maintain pressure and performance values ​​throughout the entire service life.

During production, special attention is paid to the quality of components and electronic systems of the product. Each part undergoes 100% control of performance and workmanship, all electrical connections are tested for reliability and resistance to corrosion.

This approach ensures maximum operational safety in conditions of constant contact with explosive and fire hazardous materials, and eliminates the possibility of sparking and premature pump failure.

Main characteristics of WEBER electric fuel pumps

Note. The parameter values ​​presented in the table are the results of the corresponding tests:

There is often a dispute among motorists about the performance of liquid pumps. So, there are people who believe that all superchargers have the same parameters, and they output no differences, exactly seven bar. And supposedly what is given in the tables is rare nonsense.

Jabot report

05/16/2016 18:16 - category: Drive2: Operating experience - Source: All Renault Megane 2 experience from drive2.ru

Hello everyone, the following happened, the traction was lost, the consumption jumped to 11 liters, it was impossible to overtake the gazelle, I measured the pressure in the fuel line, it showed 2 points. Well, fortunately I have two more pumps, I think now I’ll quickly change everything, I’ll install the original pump from another Megane ABE, the pressure has risen to 2.5. I'm renting I'm putting it from the AvtoVAZ Weber store, bought a year ago for 580 rubles and used for a maximum of 20 km, left just in case, the car barely starts on it and stalls after a minute (apparently it deteriorated after a year of lying in the closet))))). I’m going home to look at the catalogs for all the suitable pumps, wait 5-7 days, but I want to go normally now. I read that the Bosch pump from the UAZ is suitable for both pressure and l/h, I go to the GAZ store and ask, they bring a BOSCH 453 pump, i.e. VAZ 2266 RUR, I go to the neighboring VAZ they bring a pump also BOSCH 453 for 2600 RUR, I go to another store and ask again the pump is taken out to the UAZ pump 0 580 454 035 its price is 3500 rubles. Having thought about it, I decided to order the assembled module, I go again to the first store, ask for the cheapest pump, and what do you think they give me for 660 rubles... BOSCH 0 580 454 035, they honestly say that this is China. Whoever decides to install a pump from 10 on a permanent basis, be careful not to buy a Chinese one at the price of the original, and one peculiarity was that the instructions for the 035 pump in both stores were crumpled, but for the 453 it was normal. After installation, the measurement showed 4.1-4.2 at xx, when driving it also holds, from 5500 rpm it drops to 4x RTD, I have a 3.8 priora, I attach a photo of the pump.

What should the pump power be?

Of course this is not true. Let's say there are two different cars. One has a 3.5 liter engine, the other has a 1.6 liter engine. In addition to the difference in volume, the engines also differ in the number of cylinders. One installation has six cylinders, the other has four. Question: Do the pumps require the same performance to supply both units with fuel fluid?

It is clear that the pressure and performance of the superchargers installed on these machines will be different. Even if the pumps are similar in appearance, their power will not be the same. That’s what it says on them: on one device – 3.8 bar at 90 liters per hour, on the other – 2.8 bar at 60 liters per hour.

There are known types of fuel pumps with even greater performance. For example, in the Bosch catalog there are devices capable of pumping 160 liters per hour or even more.

In general, it is generally accepted as follows:

There is also an opinion that for fuel backflow systems there should be a productivity of at least 2 liters per minute.

Engine ⇒ electric fuel pump

Moderator: Akulych

Posted by NitroLAB » Aug 26, 2021 3:39 pm

I think the topic of boobs about gas pumps is long overdue. There is an opinion that a full-time Tazovsky will not be enough in terms of performance. I propose to develop the topic with characteristics and to the point, without saliva and emotions - only facts. Igor (Kianych) is great, he offers to install a good pump. We'll get back to it later, but it's damn good. pressure 6-6.5 bar, consumption approximately 300 liters of fuel per minute)))) Bosch 0 580 254 044. A simple search shows that similar pumps, even with lower productivity, are often placed in a plastic receiving cup of the pump housing.

Sent after 40 seconds: the pump is installed outside, made in the Volga standard size.

Post by scorpovod_34 » Aug 26, 2021, 3:44 pm

Posted by NitroLAB » Aug 26, 2021 3:45 pm

Our regular fuel pumps are made in a different size, they are smaller. photo from drive2 all these pumps are guaranteed to pump fuel at a pressure of 3.5 - 4 bar.

Sent after 19 minutes: in appearance these pumps do not differ (almost), all connecting dimensions along the mesh and the body diameter are the same. may differ in length, this gives different power to the pump windings, and may have a different number of blades on the pump itself. for example, Taz pumps have different lengths - from what you can buy in a store

• Bosch fuel pump 0580453453 – 105 mm VAZ (1900 r existential) Bosch fuel pump 0580453449 – 65 mm BYD CHANGAN CHERY EFFA HAFEI MARUTI SUZUKI SVW (7500 r existential) Bosch gasoline pump 0580453465 – 90 mm HOLDEN OPEL (up to 211 hp) VAUXHALL (14 700 r existential)

go to the website of Astron, a manufacturer of pumps for AvtoTAZ. https://astron73.ru/product/utes/nasos-vaz what we see: pressure 3.8 bar

• Granta 2190-1139009-01 – no less than 35 l/h 21102-1139009-02 – no less than 60 l/h 21083-1139009-02 – no less than 60 l/h 21101-1139009 – no less than 35 l/h 21214-1139009 -10, 21214-1139009-20 – no less than 60 l/h 1118-1139009-10 – no less than 35 l/h 21073-1139009 – no less than 60 l/h 2123-1139009-20 – no less than 60 l/h

Pumps and injectors from Bosch: tables

The most famous manufacturer today. Pumps from Bosch are installed on many well-known car models.

The electric fuel pump from Bosch uses a high power rating, which allows it to push fuel directly onto the injectors and into the power plant. The operation of this fuel supercharger is controlled electronically. It calculates the state of the damper, exhaust and takes into account the amount of gasoline in the fuel assembly completely in AUTO mode.

It is noteworthy that Bosch develops unique pumps for this or that brand of car. For example, for our VAZs, units with a capacity of 3 or 3.8 bar are produced. These figures are higher than those provided for by the car, however, many owners install just this option. The Bosch pump in no way affects the increase in fuel consumption, as some believe. On the contrary, fuel consumption is caused by a situation when optimal pressure is not created in the ramp, and as a result, the injectors do not function correctly - they do not spray gasoline, but simply pour it.

Thus, Bosch pumps can have different performance data. It all depends on the specific analogue. Read more in the table, which shows the types of fuel pumps by model.

Bosch pumps are also installed on the popular German BMW car in Russia. Performance also varies depending on the BMW model. Basically, it is customary to divide pumps from this manufacturer for BMW into two categories.

On injection engines, in addition to the pump performance, it is customary to talk about the performance of the injectors. This means their maximum possible throughput when open. In other words, over what period of time the nozzle is capable of supplying the maximum amount of fuel is this very parameter.

As a rule, most manufacturers, including Bosch, Siemens, Denso and Delphi, provide injector sizes in their catalogs according to Western standards, i.e., in f/h.

Here, for example, are the parameters of Bosch injectors according to the catalogue.

Source

What happened?

The performance range was from 67.1 to 146.7 l/h - more than double!

The lowest performance was found in an expensive pump costing 3,250 rubles. Let us remind you that we bought the cheapest one for only 900 rubles.

Details are in the final table.

Of all the results obtained, we consider the main ones to be the pressure regulator opening voltage, as well as the pump efficiency - the ratio of performance to power consumption. We recalculated these values ​​into ratings on a five-point scale: more is better. Their arithmetic average allows us to judge the technical perfection of the pump.

The best were the Italian ERA Fuel pump and the Chinese Kortex KPF. It is curious that both were sold as “foreign” ones: the first for Mitsubishi, the second for Mazda.

But the worst in all respects was... Bosch.

The actual characteristics of the tested pumps are not proportional to the price tags, so in conclusion we calculated the price/quality ratio, also bringing it to a five-point rating system.

Surprisingly, the leader was not a frankly cheap pump, but... the same Italian EPA. Absolute victory!

Fuel pump pressure gazelle 405 injector

Repair and service of cars, engines and automatic transmissions

Adjustments of parts of the fuel system of the ZMZ-405 engine

The power supply system (fuel system) ZMZ-405 of the GAZ-3302 Gazelle Business, GAZ-2752 Sable cars is designed to supply fuel and air to the engine cylinders. Fig. 10 – Schematic diagram of the power supply and control system ZMZ-405 for GAZ-3302 Gazelle Business, GAZ-2752 Sobol

The fuel supply system includes a fuel tank, fuel pump, fuel filter, fuel lines, fuel rail with pressure regulator and injectors. The fuel tank is steel, with a capacity of 64 liters. The filler neck is located on the left side of the car and is connected to the tank with a rubber hose. A check valve is installed inside the neck to prevent fuel from leaking out when the car turns over. The neck is hermetically sealed with a stopper. The above-fuel space of the tank is connected to the atmosphere through a double-acting valve. The valve allows air into the tank as fuel is consumed and releases excess pressure from the tank as the ambient temperature rises. The valve is fixed to the neck of the tank and connected by a plastic tube to a ventilation fitting, which is installed in the upper part of the tank on a thread. Fuel module ZMZ-405 for GAZ-3302 Gazelle Business, GAZ-2752 Sable cars - installed in the fuel tank and combined with a fuel level indicator sensor. Fuel drawn from the fuel tank passes through a strainer installed on the fuel pump intake pipe. The fuel pump (gasoline pump) of the internal combustion engine ZMZ-405 of the GAZ-3302 Gazelle Business, GAZ-2752 Sable is electric, submersible type, installed in the fuel module. Connected to the fuel module cover with electrical wires and a corrugated hose. The fuel pump is turned on by command from the electronic engine control unit and develops a pressure of at least 3 bar. From the pump, fuel under pressure is supplied through a fuel line through a fine filter into the fuel rail. Fuel filter ZMZ-405 for GAZ-3302 Gazelle Business, GAZ-2752 Sable – non-separable with a metal body, mounted on the car frame near the right front wheel. The fuel rail is designed to supply fuel to the injectors. The ramp is made of aluminum alloy and is attached with two bolts to the intake manifold. A brass fitting is installed at the front end of the ramp for connection to the fuel supply line.

Fig. 11 - Engine fuel rail with ZMZ-405 injectors for GAZ-3302 Gazelle Business, GAZ-2752 Sable 1 - protective cap of the threaded fitting; 2 – fuel rail; 3 – connection fitting for the fuel supply line; 4 – fuel supply line holder; 5 – nozzle; 6 – injector o-ring For accurate dosing of injected fuel, it is necessary to maintain fuel pressure at the injector inlet fittings. For this purpose, a fuel pressure regulator is installed at the rear end of the ramp. The pressure regulator is a fuel valve connected to a spring-loaded diaphragm. The valve is closed under the action of the spring. The diaphragm divides the valve cavity into two isolated chambers - fuel and air.

The air chamber is connected to the intake pipeline, and the fuel chamber is connected directly to the ramp cavity.

The vacuum in the receiver, overcoming the resistance of the spring, tends to retract the diaphragm during engine operation and thereby open the valve. On the other hand, fuel presses on the diaphragm, also trying to compress the spring. As a result, the valve opens and part of the fuel is released through the drain pipe back into the tank. If the throttle valve is closed, the vacuum in the receiver is maximum and the valve is fully open. When you press the gas pedal, the throttle valve opens and the vacuum in the receiver decreases. The diaphragm, under the action of a spring, closes the valve and the fuel pressure increases. The injector of the ZMZ-405 engine is an electromagnetic valve that allows fuel to pass through when voltage is applied to its winding. After the tension is removed, the valve closes under the action of the spring. At the lower end of the injector there is a nozzle through which, when the injector valve opens, fuel is injected into the intake manifold. The connections of the injector with the ramp and the inlet pipeline are sealed with rubber rings. The air supply system includes an air

How to buy a quality device?

The price for a VAZ 2110 fuel pump in market conditions will be 2 times lower than in a specialized store. The equipment is in durable and sealed packaging. Inside the package is purified gasoline. If you smell gasoline, then the seal of the packaging is broken and there is a possibility of corrosion forming inside the gasoline pump. Submerged equipment is lubricated and cooled by fuel. When using low-quality additives and gasoline, internal electrical mechanisms are corroded. If additional substances are not used in the operation of the device (dry), then the brushes wear off and it overheats. The service life of the equipment is longer. Some car owners are planning to replace the VAZ 2110 Bosch fuel pump, the characteristics and pressure of which are not normal only due to long-term use. Its pressure can be 6-7 atmospheres. It was amazing to hear from an experienced driver his method for testing the fuel pump. To do this, he took a jar of water, turned it on on the battery, and by the flow of liquid he realized that the power of the gas pump had decreased.

Description of the operation of the electric fuel pump

The electric fuel pump is driven by its own electric motor. When you turn the key in the car's ignition switch, on-board voltage is supplied from the electronic unit through a relay to the fuel pump electric motor. The gas fuel pump comes into operation with a characteristic sound that is heard for two to three seconds immediately before the vehicle engine starts. At the same time, the system creates the pressure necessary for gasoline to flow from the gas tank through the fuel supply line through the fuel filter installed to clean gasoline from debris contained in it, to the fuel rail, and then through the injectors to the engine pistons to start it. The car engine starts. A signal about the successful start and operation of the engine goes to the car computer. The vehicle's engine is running, and the fuel pump continues to function. If the engine does not start for some reason, the car’s computer will also receive a signal about this, and the fuel pump will turn off.

For the smooth operation of an electric fuel pump, a number of rules must be followed. First, and most importantly, you need to keep the Gazelle fuel filter clean and do not forget to replace it during maintenance, especially if you are using fuel that is not of the best quality. In addition, on many modern cars the fine filter is built directly into the fuel pump. Replacing such a filter is a rather labor-intensive operation (you have to remove the gas pump from the tank to replace the filter in it), but sometimes it is simply necessary to do this. And, secondly, you need to make sure that the gas tank is always more than one-third full. In this case, the pump is completely immersed in fuel. If you do not follow this simple rule, then there is a high probability that the electric pump may fail due to overheating.

Another type of fuel pump is a pump for pumping diesel fuel. Designed for pumping diesel from the tank of one car to the tank of another, or from a canister to a tank. There are restrictions on using the pump to transfer gasoline, as gasoline may ignite.

How to buy a quality device?

The price for a VAZ 2110 fuel pump in market conditions will be 2 times lower than in a specialized store. The equipment is in durable and sealed packaging. Inside the package is purified gasoline. If you smell gasoline, then the seal of the packaging is broken and there is a possibility of corrosion forming inside the gasoline pump. Submerged equipment is lubricated and cooled by fuel. When using low-quality additives and gasoline, internal electrical mechanisms are corroded. If additional substances are not used in the operation of the device (dry), then the brushes wear off and it overheats. The service life of the equipment is longer. Some car owners are planning to replace the VAZ 2110 Bosch fuel pump, the characteristics and pressure of which are not normal only due to long-term use. Its pressure can be 6-7 atmospheres. It was amazing to hear from an experienced driver his method for testing the fuel pump. To do this, he took a jar of water, turned it on on the battery, and by the flow of liquid he realized that the power of the gas pump had decreased.

Hi all! I drove and didn’t know grief! but my car started to start extremely poorly, where it starts and stalls, when I turn the key sharply, it starts and stalls again... and this can continue for 5 minutes... and eventually it starts... at idle it instantly shows 0.7... I changed the filter nothing has changed... while driving, I noticed that when you press the pedal sharply, it stalls... if you press smoothly, it pulls normally... if there is not enough gasoline in the tank, the light is on but the arrow is not in the air... you’re completely tired of starting... and then snow suddenly piled up...

Now the fuel pump is more complicated. I’m not looking for easy ways, you know...)) I started from the fact that the fuel pump from a BOSCH fret is suitable.

I advise you to read further very carefully, because I will try to answer most of the questions. and the fuel topic will be closed with this post specifically on ASTRA H.

Fuel pressure regulators - function, symptoms and testing

All fuel injection engines have fuel pressure regulators to maintain a controlled high pressure level.

So, fuel pressure regulators must maintain constant pressure; to ensure that all components of the fuel injection system work properly.

And, if the pressure goes outside this range, the car will not work or will not work efficiently.

So, fuel pressure regulators maintain fuel pressure between 25 and 60 pounds of pressure; depending on the car and manufacturer. There is a main fuel line from the fuel tank to the fuel rail.

Checking engine fuel pressure

Also the fuel return line from the fuel pressure regulator. This return line is located below all injectors.

Fuel pressure regulators use a combination of a diaphragm and a spring inside a housing; with a vacuum source on the top side of the diaphragm.

Therefore, it should counteract the spring pressure when high demand dictates the need for higher fuel pressure.

So, a sudden drop in vacuum will affect the fuel pressure. This occurs because the fuel injectors open wide suddenly. It takes a few seconds for the fuel injectors to sense the pressure being created. At these moments, the fuel pressure regulator temporarily turns off the fuel return line. As a result, it helps to increase the fuel pressure for a few moments.

The computer uses sensors to determine:

Sensors Therefore, using this information, the computer decides the strategy that will result in the best performance of the engine.

Fuel pressure regulators usually fail in one of two ways:

When it doesn't hold pressure, it delivers too little fuel to the engine, resulting in a lean mixture.

When the fuel pressure regulator gets stuck and creates more pressure than it should; this will cause the injectors to deliver too much fuel; causing a rich mixture (high pressure) condition.

Malfunction of the fuel pressure regulator Symptoms:

Vacuum and Leak Testing

The easiest way to check fuel pressure regulators is to use a fuel pressure gauge.

Fuel pressure tester

So, this test checks the operation of the fuel pressure regulator; to make sure it changes line pressure in response to changes in engine vacuum. In addition, this is necessary to maintain proper operating pressure behind the injectors and; to compensate for changes in engine load.

With the engine running, disconnect the vacuum hose from the pressure regulator. Typically, fuel system pressure should increase by 8 to 10 psi. Inch with the line disconnected. No changes will indicate a faulty pressure regulator or a leaking or clogged vacuum line.

Also, with the vacuum hose disconnected from the regulator, check the inside of the hose for moisture, which may indicate fuel is being sucked into the hose. There shouldn't be any there. The diaphragm inside the regulator leaks if there is fuel in the hose.

This will result in a drop in fuel pressure; and allow fuel to be sucked into the intake manifold, disrupting the air-fuel mixture. So, if the diaphragm is leaking, replace the regulator.

Conclusion

So, always replace your fuel filter at the vehicle manufacturer's recommended intervals. Also, a clogged filter will cause a drop in fuel pressure and damage the fuel pump. Thus, it is more cost-effective to maintain the fuel filter regularly.

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Signs of damage

A malfunction of the fuel pump is indicated by an increase in noise during its operation. This indicates natural wear of the supercharger or severe scuffing of its rubbing parts. This nuisance often appears 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. Defects often appear in the guide grooves of the supercharger rotor.

How to Test Your Car's Fuel Pump in Less Than 20 Minutes

Explanation

Your car's fuel pump is used to supply gas to the engine's fuel. Weather in injectors - gasoline or diesel fuel. Depending on the fuel system design, you may have one or more styles of pumps in different locations, mechanical and electrical models. Direct injection fuel systems can be either diesel or regular gasoline, which consists of a primary pump in the fuel tank and a secondary "high pressure" pump that is mounted and driven by the engine. A regular high pressure fuel injection system has only one main pump in the fuel tank. tank. A fuel pump test will show the performance of the pump.

Characteristics of the Bosch fuel pump 0580453453

Especially for my readers, I got confused and measured the fuel pump that is on my display case. In fact, the characteristics of Bosch gasoline pumps differ in the length and very rarely in the diameter of the body. Why? The diameter of the body can be adjusted using a gasket made of petrol-resistant rubber.

Most often, the characteristics of fuel pumps (not only Bosch, but also from other manufacturers) may differ in length, pressure, location of terminal chips and that’s it :). The fuel pump mesh does not differ in seating, but it may differ in shape.

The chip for the terminal can be remade or supplied from the same VAZ. The length of the fuel pump is important, since its operation depends on this when the fuel level in the tank is low, and if it is in the module, then you need a match to install it.

• Bosch fuel pump 0580453453 - 105 mm
• Bosch fuel pump 0580453449 - 65 mm
• Bosch fuel pump 0580453465 - 90 mm

What should the pump power be?

ATTENTION! A completely simple way to reduce fuel consumption has been found! Don't believe me? An auto mechanic with 15 years of experience also didn’t believe it until he tried it. And now he saves 35,000 rubles a year on gasoline! Read more"

Of course this is not true. Let's say there are two different cars. One has a 3.5 liter engine, the other has a 1.6 liter engine. In addition to the difference in volume, the engines also differ in the number of cylinders. One installation has six cylinders, the other has four. Question: Do the pumps require the same performance to supply both units with fuel fluid?

Source

When to change the fuel pump?

The reason for replacing the fuel pump, in addition to its complete failure, is usually a changed behavior of the car. Let us list the most characteristic signs of a pump “dying”:

• partial loss of power;
• inadequate reaction to gas;
• Unstable engine operation at minimum idle speed;
• change in the tone of the engine;
• noise in the fuel tank;
• Uncertain engine start.

In all these cases, as a rule, mechanical wear of the electric fuel pump parts or burning of its contacts is to blame. Sometimes the fuel inlet filter is simply dirty. It can be washed, or better yet, buy a new one and replace it.

OUR COMMENT

The pressure developed by the pump when the line is closed indicates the perfection of its design. The higher the pressure, the better the fuel pump. The pump is designed with a technological reserve that ensures its uninterrupted operation regardless of fluctuations in supply voltage, temperature and gasoline parameters.

The pressure regulator maintains the fuel pressure in the power system at a safe level, for which all elements are designed - hoses, tubes, injectors. Without it, a pump operating with a technological reserve will exceed the permissible pressure, which can lead to system failure.

The opening voltage of the pressure regulator (3.9 bar) indicates the threshold from which normal operation of the power system begins. The lower it is, the better.

The parameters taken at a supply voltage of 6 V indicate that the electric fuel pump can start the engine when the battery is extremely low. The higher the pressure, the better the fuel atomization at the injector outlet.

The topic is open to those who are looking on the Internet for information about the technical characteristics of the Bosch fuel pump for the VAZ 2110. If you were looking for information about the fuel pumps for the VAZ 2110 Bosch, then this is an incorrect request.

Fuel pumps most often mean high-pressure fuel pumps, also known as injection pumps, and this is closer to diesel fuel systems. Gasoline engines have fuel pumps - mechanical and electric.

On the VAZ 2110, the Bosch electric fuel pump is probably the most popular fuel pump, because it has a relatively low price and universal dimensions, as well as availability in most stores.

Let's look at the following topics:

Fuel pump VAZ 2110 Bosch performance/pressure

Characteristics of Bosch fuel pumps and specifically the Bosch fuel pump 0580453453

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There is often a dispute among motorists about the performance of liquid pumps. So, there are people who believe that all superchargers have the same parameters, and they output no differences, exactly seven bar. And supposedly what is given in the tables is rare nonsense.