DIY 4 generation LPG repair omvl

There is not so much perfect in this world, and maybe not at all, so when something, at first glance, very thoughtful and perfect fails, you should not be surprised, you should accept it as inevitability.

Gas equipment is also susceptible to breakdowns and malfunctions. Today we will talk about the malfunctions of HBO 4 generations, we will try to suggest the cause of the breakdown (inoperability) by the characteristic symptoms.

To begin with, a few words about what leads to a malfunction of the fourth generation HBO.

1. Most often, gas equipment fails due to the fault of the motorists themselves. Not a desire to delve into the essence of the HBO device and perform the slightest maintenance thereof.
2. The wear of parts also occurs due to poor quality gas, pollution, as well as violation of operating rules and mistakes made when installing gas equipment on a car.

Disruptions in the operation of the internal combustion engine can be the result of problems with gas equipment and not only, therefore, in search of a breakdown, you should be objective and pay attention to all components, and not only LPG gasoline.

• Problem with spark plugs, ignition.
• Insufficient compression in the engine.
• Valve adjustment required.
• The lambda probe dies or is completely defective.
• Incorrectly adjusted gas injection or gas injectors, injectors forgotten.
• Interruptions in engine timing.

• Gas injectors not working properly or misaligned.
• The gas pressure regulator cannot create the optimum pressure for correct operation. Poor heating of the gas reducer.
• Defective lambda probe.
• Filter problem (gas filter clogged, gas fine filter clogged).
• Gas lines blocked.

• The gas temperature sensor in the reducer or the gas temperature sensor is defective.
• The gas pressure sensor is out of order.
• The voltage in the battery is less than 9 volts.
• There is no signal from the tachometer.
• The reducer is not heated, or air has entered the heating system.

• Reducer defective or too low pressure.
• Clogged air filter.
• The ignition system is not working correctly.
• The gearbox does not warm up.
• Gas injectors or injection system are not working properly.
• The gas reducer is out of alignment.
• Reduced compression in the engine.
• The calibration nipples of the injectors are not matched exactly.
• The lambda probe does not work or does not work correctly.

• The gas injectors are not calibrated correctly.
• Gas filter clogged.
• The gas pressure in the reducer is insufficient.
• Problem with gas lines.

If, when switching to the engine, it starts to "junk", most likely the problem is precisely in faulty HBO, in this case, switch back to gasoline and continue driving until the reasons for the interruptions in the operation of the internal combustion engine are established. Do-it-yourself HBO repair is extremely undesirable, except for those cases when you are well versed in gas equipment and have all the necessary equipment to carry out repair work. In all other cases, we recommend that you contact the specialists or the service station that installed this HBO.

Thank you for your attention, until we meet again at the GBOshnik. Till!

As professional propulsion specialists know, quality, factory-built equipment is the key to success. All the more so if it is a gas equipment of the OMVL. This manufacturer has established itself as one of the best in the world.

It is important that the company's engineers and designers carefully study each unit, paying particular attention to the possibility of its functioning in the harsh Russian realities: with not always high-quality and clean fuel and extreme temperature operating conditions.

That is why GAZ vehicles are equipped with OMVL gas equipment - powerful and highly reliable. Moreover, in the overwhelming majority of cases, when choosing gas equipment, car owners will opt for this brand, as the most common one.

The installation includes the following elements:

• fuel tank;
• gas supply valve (valve);
• refueling device;
• pressure distributor in the system;
• gas filter;
• injection unit (injectors);
• electronic control board;
• pressure control sensor.

The fuel tank is most often installed in the trunk - where there is a lot of free space.

Attention. For the propane mixture, a valve mechanism is required, for the methane, a shut-off valve. You need to know this when choosing a system.

Pressure distribution and at the same time evaporation from a liquid state (in a cylinder) occurs in a reducer, then the mixture is filtered and enters the injector block. The electronics controls the fuel supply to the engine, depending on the load, and controls the entire system as a whole. This prevents excessive gas consumption, ensures a continuous supply of the mixture to the combustion chamber, and performs other functions.

Like other versions of gas distribution equipment, HBO OMVL is not recommended for self-assembly. At the moment, version 4 is the most popular. More modern (and expensive) installations are still just being mastered, and the previous generations, along with the gradual retreat of carburetor engines into the past, are becoming unclaimed.

Among the most popular are the Saver and Dream sets. Suitable for all models with injection injection, without exception, they perfectly fit with them. The kits are completely ready for installation, you just need to pay attention to the correspondence of the automation to the engine (number of cylinders) and the distributor-reducer. All connecting cables, sensors, fittings and other components are selected by the manufacturer, you do not have to look for them yourself.

Important. The Saver software is based on the original petrol maps, therefore stable engine operation on blue fuel is guaranteed - the difference is almost imperceptible. If this is not the case, it is possible that the LPG setting was performed incorrectly or the electronics are faulty.

Another big plus is that the program is available for download on the OMVL website in the latest version. Dream is even more perfect in this respect: it selects the optimal injection parameters, which allows you to maintain a smooth ride even with minimal fuel consumption. Again, it will not be possible to implement such a setup of the 4th generation HBO OMVL with your own hands: the help of specialists from the service center is needed. There is, perhaps, one requirement for operation: to monitor the purity of the gas. The durability of the entire system depends on this.

Among the arguments in favor of OMVL gas equipment for 4-generation cars are reviews of motorists who are faced with its operation in Russian conditions, where there may be more than a dozen kilometers to the nearest service.

And also the simple facts. Firstly, according to statistics, such aggregates are chosen in more than 40 countries. In Russia alone, there are about 20 thousand assembled sets. Secondly, more than 50% of the total volume of supplies goes to factories, for the installation of gas equipment on a turnkey basis, for new cars under the brands: Toyota, Hynday, FAW, Volkswagen, BYD, Suzuki, Tata, Ford, GAZ, and this list is constantly expanding. Thirdly, on HBO of the 4th generation of OMVL, the connection diagram is one of the most thoughtful: there is not a single superfluous detail or accidental element in it.

Finally, the Gorky Automobile Plant has been using equipment of this brand for more than 5 years to re-equip its products. And this is a solid recommendation.The disadvantages include legibility in the degree of fuel purification (an eternal disease of all systems), an abundance of electronics, expensive maintenance (and only in authorized workshops), as well as the tendency of the distribution unit to fail.

And then a problem arises under the name: "OMVL gas reducer of the 4th generation, repair", and its cost is a round sum. There is only one way out: do not delay prophylaxis, change small failed units in time and pay attention to any engine malfunctions. If these conditions are met, the installation will serve for a long time and almost without failure.

The installation of a gas-cylinder unit in a car in the current economic conditions is fully justified: propane is several times cheaper than gasoline in cost, and besides, such fuel is more environmentally friendly. An argument in favor of switching to liquefied gas is also the steadily growing reliability of the alternative fuel supply system.

Electronic injection and mixture supply, the possibility of fine-tuning the engine operating modes open up new prospects for the owner: not only to reduce the cost of refueling, but also to keep the speed characteristics of the car unchanged.

A wonderful solution from all points of view would be the choice of HBO of the 4th generation of OMVL - the brand that has proven itself in the best way. The company with more than 30 years of experience in the design of gas installations for transport is one of the leading manufacturers, and the quality of the Italian factories has always been rated as high, especially when it comes to automotive technology.

A fully equipped set of LPG, tested in conditions of negative temperatures and extreme operation, will make the heart of a four-wheeled friend beat smoothly and accurately.

Very often installed on a car 4th generation gas equipment, users are not happy with the fuel consumption or the vehicle's performance. This forces you to go to the service center for additional LPG adjustment... It's good if the masters understand how to solve the problem. There are situations when driving LPG adjustment there's no point. This happens if the installer's employees do not understand well in principle settings, and it is not uncommon to find a generally absurd opinion - the autotuning of Italian systems solves all problems. No autotuning will make the minimum - so that the car does not at least stall. Rest settings must be carried out manually using diagnostic equipment.

It has been said, written many times, and the most important thing is in all instructions for automobile gas equipment - if it is correct tuned HBO 4 generations the petrol injection time remains the same when running on petrol and gas. It is the job of the tuner to make sure that the injection time does not change. HBO... For example, refer to the instructions for gas equipment of the 4th generation OMVL – Fuel card setup... We read from the point 4.4.1 Modify the map. And the rest of the systems are no different. This is the main thing.

1. To configure having only a cable for LPG adjustment by changing the injection time. If you have to use this option, then it is easier to use older versions of programs where there is a rough HBO setting by load.

2. Adjust with the fuel trim diagnostic scanner. If you have a diagnostic scanner or adapter, it will be convenient to configure it with any program.

I will clarify what is the load on the engine. For many, an increase in load is an increase in revs. This is fundamentally wrong. If you push the throttle to the floor in neutral, the revs will skyrocket, but the load will be at its lowest. The load is proportional to the injection time, and therefore to the discharge in the manifold (more air is required to burn a large amount of fuel, therefore the vacuum in the manifold is proportional to the load).

Favorite section of settings for most installers. In principle, you should always start with this.Autocalibration is a fairly simple operation, the control unit remembers the petrol injection time. Switches to gas. And it adjusts the coefficients of the fuel map in order to repeat the petrol injection time on gas.

Only there is one big BUT. The whole map is changed according to the data of one cell. That is, for example OMVL changes the entire map of coefficients for the minimum load cell at 3000 rpm. LOVATO changes the whole map at idle. This is necessary for the vehicle to be able to travel for tuning while in motion. There is no question of any 100% setting of all revolutions and the entire load.

LPG adjustment by load implies a change in the cells not in terms of revolutions, but in terms of injection time. That is, you memorize the petrol injection time at a certain moment of movement (for example, 3 ms), switch to gas. See how the petrol injection time changes (do not change driving conditions and effort on the gas pedal). Compare with gasoline readings. For example, it turned out 4 ms, but it was 3 ms. This means there was an increase in injection by 33%. If the petrol injection time while running on gas has increased, this means the mixture is poorer than necessary. And it is poorer by 33%. Now we change the entire line of 3 ms to +33 units, and so on throughout the load.

Manufacturing companies HBO until about the middle of last year, they closed the odds map in their programs and left only a rough one in the public domain. customization by load. Rough adjustment the load looked like 8 cells, where the coefficients were entered. These factors were applied to the fuel card. The first column of 4 cells was responsible for the idle run. The first cell changed the 1000 revolutions map column from 2 ms to 3 ms; 2, the cell changed from 3.5 ms to 6 ms, and so on. Cells of the second column of coarse adjustments changed the map in all columns except 1000 revolutions. That is, everything except idling.

For clarity, I made screenshots of the old version of the program.

Program odds map OMVL... I specifically changed all values ​​to 100.

Cells settings in terms of load, they were gone with version 6.

We introduce correction factors into the rough customization.

Let's see what happened to the odds map.

It shows well how it works. customization by load. At adjusting in terms of injection time, it will be easier to use exactly the old version of the programs (5.0.5 or 5.0.8).

The tuning method discussed earlier is not convenient when tuning in motion. It is very difficult to keep your foot in one position and finding a road with a perfectly flat surface is also not always possible. It was more convenient to record the data and analyze it after disconnecting from the car. First, we record driving on gasoline, then on gas. We compare the injection time. But this is where the difficulty arises. How to compare injection times in different operating modes? To do this, you need to synchronize the data when driving on gasoline with the data when driving on gas according to the readings of the MAP sensor.

The MAP sensor shows the collector vacuum. Its readings change as the load changes, but do not change if the coefficient is incorrectly selected in the LPG tuning program. For example, when running on gasoline at idle, you have an injection time of 3 ms, a vacuum of 0.3 atmospheres. Switch to gas, the injection time becomes 4 ms, but the MAP sensor readings do not change and 0.3 atmospheres remains.

To use this principle, you need to use the signal registration tab in the setup program (item 6.1 Acquisitions).

1. First, you need to drive about 100 kilometers on gasoline so that the fuel trim is back to normal.
2. Record data when driving on gasoline, save it.
3. Write out what the manifold vacuum is equal to at the injection time used in the HBO program (2, 2.5, 3, 3.5, 4.5 ms, etc.).
4. Record data when driving on gas, save it.
5. In the gas data, look at the MAP readings and use them to determine how long the petrol injection time took.

For example, you need to set up a line of 3 ms, see how much MAP is equal to 3 ms when driving on gasoline, for example 0.3. See how much the petrol injection time when driving on gas at MAP 0.3, for example 4 ms. This means that in line 3 ms the mixture is 33% lean, add 33 units.

This principle is remarkably implemented in HBO. Digitronik... The program collects data and builds a schedule of work on petrol and gas. It immediately becomes clear where to add, where to subtract. In simple blocks, you can see only load curves - 2D map. In more serious blocks, you see a 3D map, in it you can see the change in injection relative to the load and rpm. Because of this feature, I recommend everyone to use Digitronik control boxes. For their settings only the cable is enough for HBO.

For the convenience of processing the recorded data, you can use a spreadsheet processor - Excel or Calc (OpenOffice). I will tell you how to do this in another article.

The most correct option is 4 generation LPG adjustment using a diagnostic scanner. The diagnostic scanners show the vehicle ECU fuel trim (FuelTrim). Fuel trim displays the injection deviation from the norm as a percentage. Again, the readings of MAP and MAF sensors and a table of reference values ​​of injection times at certain readings of these sensors are most likely used. When the injection times deviate from the reference, the correction is shifted from 0. For example, the same example with 3ms when running on petrol and 4ms when running on gas. The correction will be 33%.

The essence settings according to the diagnostic scanner, it is reduced to the selection of card coefficients in such a way that at any load and speed the correction does not go beyond + -5%. At first, I would recommend adjusting the card only for load, and then see if there is any difference in rpm. Usually it is enough to adjust the load only.

The convenience of using the scanner is that you do not need to calculate deviations in your head. It helps a lot with at the construction site in real time. While driving, you see a map of coefficients and fuel trim readings. Enter the correct ratio instantly and watch the car's reaction. If you are using not a full-fledged scanner, but an OBD adapter with a laptop, then the data can also be recorded and processed later. Again, tied to the MAP sensor.

I will describe the processing of the diagnostic program data in a spreadsheet processor, using the Digimoto 5 version as an example, in the future.

Driving gas-fueled cars, drivers often encounter incorrect operation or LPG breakdowns. The efficiency of this equipment largely depends on the health of the gas injectors. Their operation takes place under conditions of exposure to high temperatures, and sometimes low-quality fuel.

Owners of vehicles running on gas are advised to know how to repair, clean and adjust the 4th generation LPG gas injectors with their own hands. This will help in some situations and save money.

Gas injectors are special LPG units that are responsible for the dosage of fuel, in fact, they are high-speed valves. Thanks to their correct operation, the required ratio of the gas-air mixture in the internal combustion engine is ensured. Such mechanisms began to be used in the 4th generation of HBO.

Some of the most popular are stock models from Valtek (Valtek), Rail (Reil), Digitronic (Digitronic), OMVL (OMVL), Lovato (Lovato). Their undoubted plus is that they are easy to repair, which consists in flushing, replacing a repair kit and adjusting, in contrast to non-separable injectors like BRC (BRS), Barracuda (Barracuda) and the like.

Symptoms of a malfunction of one or more injectors may include:

1. high fuel consumption;
2. deterioration of the dynamic characteristics of the machine;
3. unstable engine operation, troit of the internal combustion engine (one or a pair of injectors does not work);
4. failures when pressing the gas pedal;
5. malfunctions of various sensors, appearance of “Check engine” errors (for example, MAC sensor);
6. knocking in the nozzles (loudly "clatter");
7. gas leaks through injectors (pouring / poisoning);
8. the car stops idling, the injectors do not turn on.

The reasons for this may be:

• wear of damper rubber rings on the valve stems (because of this, the nozzles knock);
• development of the seat (seat) of the valve or its locking rubber;
• wear of a rod (also called a piston, an anchor) or a liner (aka a core, a cylinder, a bulb);
• jamming of the anchor in the cylinder;
• weakening of the elasticity of the piston return spring;
• failure of the electromagnetic coil (solenoid);
• violation of the integrity of the wiring.

All of the above reasons may appear naturally or due to low-quality parts, untimely maintenance of gas equipment, violation of the rules for installing injectors. So, for example, without replacing the LPG filters on time, gas condensate (oily liquid, water, dirt) can get into the nozzles, which can cause their wedging or accelerated wear.

Also, the horizontal position during installation affects the uneven wear (ellipse) of the sleeve body and stem. And the banal non-observance of the rules for installing wires (twisting instead of soldering, mixing up, improper fastening) can cause problems over time.
One way or another, but nozzles of this type rarely live up to 70 thousand km. mileage without repair (change of a repair kit). It all depends on the conditions of their operation.

A detailed check of the gas injectors (injection / opening time, throughput) is possible only when connecting diagnostic equipment, as well as after dismantling the entire ramp and checking it on a special stand in a car service. Or build a homemade stand.

It is possible to independently identify which injector does not work and the presence of leaks (tightness) is possible only by alternately disconnecting the connectors / chips and removing the hoses from the outlet fittings. It is highly discouraged to use such methods!

To repair the 4th generation LPG injectors of the Valtek or OMVL type, for this you need to remove the entire rail assembly:

• shut off the gas supply to the cylinder. To do this, you need to turn on the corresponding valve of the multivalve;
• start the engine for a while to use up fuel residues from the system;
• disconnect the battery terminals;
• disconnect hoses and power supply;
• by unscrewing the vibration dampers, remove the gas train.

In order to disassemble and flush the nozzle (consider the example of Valtek type 30), you need:

1. using a 12 key, unscrew the calibration jets / nozzles from the bottom of the ramp;
2. use round-nose pliers or a screwdriver to remove the locking rings of the coils;
3. dismantle the coils;
4. unscrew (key 14) the valve cores and remove the pistons from them.

Next, you need to check for wear: rubber parts, valve seats and stems with sleeves.

Important! If it is intended only to clean the gas injectors, without replacing parts, it is imperative to assemble all the elements in their places without confusing them. Also, in this case, it will help to extend the life of the nozzles - if you turn over the spilled locking rubber bands on the rods.

Carry out a defect identification of parts. Identify the squeezed rubber rings, bumpers and seals, also check the cylinders and anchors for wear. The valve elastic should not have large recesses from the seat. The saddle also shrinks over time. Discard unsuitable parts.

Then clean the parts of the nozzles from dirt deposits, it is convenient to do this with a rag, cotton swabs. Using a carburetor cleaner (carbokliner), acetone, gasoline or other similar products.
Rubber products (if it is decided not to change), you need to remove, it is impossible to wash them with aggressive substances. Rubber can swell from such compounds.For the same reason, it is not advisable to clean / rinse nozzles (non-separable) such as Hana, Barracuda, Brc, the effect of such cleaning is enough for a short time, if at all they will work after that.

A repair kit for gas injectors, as a rule, is completed only with rubber products (RTI), a rod and a spring, for one injector or the entire ramp. You can also buy a complete set of parts (rods with core bodies and return springs assembled). It happens all separately. On average, the price of a standard repair kit for one rail will be about 500 rubles.

Based on numerous reviews from drivers, for Valtek injectors, and this is LPG Tech, GREEN GAS (Green Gas), Atiker (Atiker), WentGas (Ventgas), Tomasetto (Tomasetto), Yota (iota), Digitronic (Digitronic), even Lovato ( Lovato), original RAIL repair kits are best suited.

The peculiarity of the r / c is that their piston has a hole in the body, this solution reduces the effect of the syringe. If the choice fell on another manufacturer, you should pay attention to the lack of magnetic properties of the metal of the parts (this should not be), dimensions, weight.

The whole replacement process consists in assembling the block of mechanisms in the reverse order:

1. if the pistons are not changed, then remove from the seats on the rods and replace the rings (rubber dampers / bumpers);
2. install (new / old) anchors and return springs in the sleeves;
3. change the O-rings of the stem stroke adjusting screw, as well as under the coil and core;
4. screw the sleeves into the rail;
5. put on coils, retaining rings.

It is recommended to use all seals once. Calibration outlet / nipples do not need to be installed at this stage.

The adjustment of the 4th generation LPG gas injectors of the Valtek type is reduced to adjusting the stroke for uniform dosing of fuel.

There is a calibration option, using a factory or home-made stand for checking and calibrating gas injectors; not even all service stations have such equipment.

Do-it-yourself calibration of gas injectors is performed with a micrometer device with an extension sleeve / sleeve and a thread on it corresponding to the thread of the dosing nozzle, it is also a dial indicator with a scale of 0.01 mm (it is completed with depth gauges, bore gauges).

You will also need a 4-12 V power supply (for example, a battery or a power supply), a piece of wire with a connector to the injector and a button for a short-term impulse so that the injector coil does not burn out (remember that the solenoid resistance is 1-3 ohms).

1. fix the micrometer to the ramp;
2. make sure that the indicator rod touches the injector armature;
3. apply power to the coil for up to 1 second (ideally, you first need to run several cycles to warm up and shrink the damping rings);
4. set the value on the device to 0;
5. in this way, adjust the plunger stroke. By turning the core screw clockwise, the gap decreases, counterclockwise - increases. It is necessary to achieve the same values ​​on all valves.

Below is a table for calibrating the armature travel of Valtek gas injectors, depending on the power of the power unit:

In many cases, motorists may need to diagnose 4th generation HBO with their own hands. Gas equipment of the fourth generation is quite reliable. But only if it is configured correctly. Therefore, when installing such structural elements, be sure to carry out diagnostic work. This will help to set up the equipment as efficiently as possible.

Diagnostics may be required if there are any problems with engine operation. The complexity of the situation lies in the fact that there are very few specialists in the services who are able to do this work efficiently. You will most likely have to do it yourself.

Do-it-yourself diagnostics of HBO 4 generations can be carried out with self-installation of equipment on a car.To do this, you need a diagnostic scanner, or a laptop with an appropriate program.

With the help of such devices, the fuel correction of the ECU is determined. It is calculated as a percentage of normal fuel injection. The reference readings of the monitoring sensors are taken as a basis. The equipment is adjusted so that the correction occurs within + -5%. Tuning is best done under load. Then the result is checked at idle. Usually no additional configuration is required.

Another case in which diagnostics are required is breakdowns and malfunctions. In this case, very often diagnostics using a scanner does not help. Errors speak only of a lean or rich mixture. But the real reason is not disclosed. In this case, you will have to carry out part of the diagnostic work manually.

Often the revolutions on an internal combustion engine (internal combustion engine) equipped with gas equipment begin to float. There are only two reasons for unstable work:

• There is no spark;
• No fuel.

The first reason is easy enough to figure out. To do this, it is enough to carry out the usual work on checking the ignition. The search for a malfunction in the HBO can take a long time. The easiest way is to connect to the ECU. But this is not always possible. Therefore, you should take turns pinching the hoses coming from the tie-in and connected to the nozzles. If, after clamping, the engine began to flicker, then the injector works. It is advisable to check the presence of a signal-pulse to the computer. The reason may be this. The main reason is injector failure or air leaks.

Take a close look at the pressure. If it falls in the system with a sharp increase in speed, then the gearbox should be replaced. If there is a lack of antifreeze in the cooling system, the gearbox may overheat, which will also lead to unstable engine operation.

Fuel consumption sometimes increases. This is an unpleasant situation. First of all, you need to check the operation of the ignition system, the correct inflation of the tires and other factors affecting fuel consumption. If everything is in order there, we diagnose HBO.

First, we check the operation of the system using the equipment. Perhaps this will happen right away, to establish the cause of the malfunction. After that, in turn, they check:

• Compression in cylinders. This is a common cause of increased fuel consumption;
• Gas reducer adjustment;
• Faulty injectors, perhaps they should be adjusted.

Any of these reasons can lead to high fuel consumption. You will have to check all these nodes one at a time. In some cases, additional symptoms may indicate a malfunction: low compression usually causes the engine check on the dashboard to turn on. Problems with the reducer are usually indicated by a decrease or increase in pressure in the system. The correct operation of the injectors is determined by the method described above.

Owners of vehicles with LPG equipment face other problems as well. Moreover, these difficulties can be associated with HBO only indirectly. Such malfunctions include the lack of automatic switching from petrol to gas. In this case, you need to check the serviceability of the gas temperature sensor. Also, the reason may be low voltage on the battery. Another reason is the failure of the tachometer or a break in the wire going from it to the HBO.

Severe dips during gas operation, up to the engine stop, signal the need to check the ignition. Most often, the cause is in high-voltage wires or spark plugs. The fact is that a more powerful spark is required to ignite the gas mixture in comparison with gasoline. If it is not strong enough, then there will be problems with the use of HBO.

Conclusion... Operating gas equipment, the driver will sooner or later face problems. Most often, malfunctions and failures occur due to careless use. In most cases, do-it-yourself diagnostics of 4th generation HBO is more effective than a similar procedure in the service.Therefore, it is better, having carefully studied the device of this system, to find the malfunction yourself.

Situations are not uncommon when, after installation in the car, the owners are not happy with the consumption of gasoline or the dynamic parameters of their car. Because of this, they are forced to go to a service center to fix the defect there. It turns out to be a success when it becomes clear to specialists how to get out of the situation. But at the same time, there are also such cases, so to speak, when there is, as it were, no need to visit the service for.

This takes place when the specialists of the installer company did not understand the nuances of the adjustment. It also happens that they adhere to the opinion that the automatic adjustment of Italian systems becomes a panacea. This option is able to ensure that only the motor works. As for other adjustments, they will have to be done manually, for which you will have to use diagnostic equipment.

To make the adjustment, you will have to stock up on:

LPG adjustment algorithm;

Wires to connect to the LPG control compartment;

Diagnostic wire;

What does the correct setting of LPG mean?

It should be said that information was repeatedly published, which can be found in any prescription for machine gas equipment, that, under the condition of competent fourth generation LPG adjustments the duration of the fuel injection does not change when using both gas and petrol. To ensure that no adjustments occur at the time of injection - this must be done by the HBO regulator.

Let's pay attention to, say, the prescription for the fourth generation OMVL gas installation. Let's get acquainted with the regulation 4.4.1 Changing the fuel card. All other systems have similar nuances. This must be remembered.

How can this be done?

Firstly, an adjustment is made when there is one wire for adjusting the LPG with the passage of the moment when the injection is adjusted. It should be noted that when you have a need to use this option, it makes sense to resort to outdated program modifications, which provide for coarse LPG adjustment depending on the load.

Secondly, adjustment using a diagnostic scanner to change gasoline. With such a device, it will be easier to carry out the adjustment using any program.

Engine load

It should be clarified what exactly is meant by the load on the motor. Most people perceive the load as an increase in the number of revolutions. This opinion is a misconception. In the case of gas pressure to the floor, when the gear is in neutral position, you can observe an increase in revolutions to a maximum. Moreover, the load will be in the region of zero.

The load is a quantity that increases with the duration of the injection. Hence it follows that it is dependent on the discharge in the collector. To eliminate a lot of gasoline, you need to have a lot of air available. In this regard, the load in the collector increases with increasing vacuum.

Restoring headlights is one of the questions that every motorist faces sooner or later. During the operation of the car, the headlights are inevitably exposed to external influences, as a result of which scuffs, microcracks and scratches appear on the surfaces. In the course of such events, the question arises: how and where to polish the headlights? in St. Petersburg you can find out from various Internet sources.

Modern LPG of the 4th generation is currently the most optimal and reliable option for various mobile gas systems. In it, the supply of the gas mixture to the injectors of each cylinder of the internal combustion engine is carried out and controlled separately.

Gas cylinder 65 liters inside the trunk. There may be round cylinders. Fuel filler neck inside the boot, leaving plenty of room inside

The equipment allows for combined power supply of the engine with petrol and gas.Switching from one power mode to another can be done manually from the cab, as well as automatically. The small control panel contains an LED gas level indicator and a fuel switch. The usual location of the control panel is under the steering column on the left near the headlamp directional adjuster.

The gas indicator contains four green and one red LEDs arranged in one row. When one green LED comes on, there is 10 liters of gas. Usually this reserve is enough for 100-120 km of run. When the red LED lights up, it signals the presence of an emergency fuel remaining, which can be enough for 50-80 km of run. It warns of the need to refuel gas at a gas station.

A separate red LED, located in the upper corner of the remote control and working in a blinking mode, signals that the engine is still running on petrol, but the system is preparing to switch to gas fuel. This happens every time the engine is started until it reaches a normal temperature and warms up well.

Engine Power Mode Switch Button and Gas Amount Indicators

Since the engine has both a gasoline and a gas power supply system, this duplication doubles the reliability of its operation. In addition, the duration of the run at one filling with petrol and gas fuel is significantly increased. This is beneficial on long trips to sparsely populated areas, where the network of gas stations is rare and of poor quality. It also adds the ability to increase protection against theft of the car, an easily removable and installable switch, the removal of which blocks the supply of petrol and gas to the injectors.

HBO of the 4th generation is especially beneficial for car owners whose engines are equipped with an expensive fuel injection system with a catalyst for cleaning exhaust gases. It not only provides significant savings in expensive high-octane fuel AI-98, but also saves the resource of the catalytic converter.
This equipment is designed for vehicles that meet environmental requirements of Euro-3 and more. It has a pulsed gas-air mixture injection system, which operates under the control of a separate control unit coupled to a microprocessor. The control unit processes the commands of the microprocessor and generates control signals that open the electromagnetic gas injection nozzles and blocking the gasoline mixture supply injectors.

The concentration of the supplied fuel mixture is monitored by a system of sensors that determine:

If the pressure of the supplied gas falls below the threshold value, the electronic unit automatically turns off the gas injectors and opens the petrol injectors, switching the engine to petrol power.

HBO includes three components:

1. LPG filling cylinder;
2. Multivalve;
3. Gas preparation, distribution and injection unit.

The multivalve is installed on the neck of the gas cylinder. It is designed to ensure the filling of the cylinder and the economical and safe consumption of gas in the process of supplying a running engine. It includes:

1. 3 valves - inlet (filling), outlet (consumption) and emergency (high-speed);
2. cylinder filling indicator;
3. fuel intake pipe.

The high-speed valve ensures that the flow channel is closed in the event of a rapid gas leak in the event of a break or damage to the connecting tube from the cylinder to the engine.

The gas preparation and distribution system consists of:

1. a single-stage reducer when using propane or a two-stage reducer for methane. The reducer provides the transfer of fuel from a liquid to a gaseous state. The two-stage reducer also reduces the gas pressure;
2. nozzle ramp with nozzles;
3. filter for gas cleaning.

The engine is intended to be started on gasoline. Starting from gas is an abnormal mode and is allowed in case of a malfunction of the gasoline system.However, it places a heavy load on the gearbox diaphragm and significantly shortens its service life. With a stable warming up of the engine up to 20-300C, it automatically switches to gas supply. When the gas pressure drops to a threshold value, the engine automatically switches back to gasoline. In this case, a special sound signal is generated to warn the driver about the lack of gas.

HBO of the 4th generation prevents the appearance of various pops in the fuel intake channel, which are characteristic of poorly synchronized mechanical feed systems. Therefore, it can be safely mounted on engines with plastic manifolds and systems with an adjustable geometry of the gas mixture supply. After installing the equipment, it is imperative to correct the ignition timing, since the combustion time and the octane number of the gas are large. It requires an earlier ignition, i.e. greater lead angle.