HBO work scheme. How does gas control work? Solenoid gas valve

Increasingly, boilers are used for heating and hot water supply in homes. They are compact, powerful and easy to use. Gas today is cheaper than other types of fuel. If you are thinking about installing such equipment in your home, it is important to understand how a gas boiler works. This will help you quickly understand the management of equipment and successfully operate it.

How is a gas boiler

What is the technique? It is important for each user to know the answer to this question, because different situations may arise during work. In addition, knowledge about the device of a gas boiler and its components will help you choose the model that is right for your room.

Main knots

Burner. The rectangular design is equipped with nozzles. Through them, the gas enters the burner and is distributed. So the surface of the radiator evenly warms up over the entire surface.

There are two types of burners:

• atmospheric. Installed near the chimney. The principle of operation is simple: air is taken from the room to maintain the flame. In this case, it is necessary to have a window and adequate ventilation. The advantage of the atmospheric type is independence from electricity. More common in floor-type models.

• Turbocharged. The operation of such a boiler does not depend on the presence of draft in the chimney and ventilation, since the built-in fan forcibly removes combustion products through a coaxial chimney. The conclusion can be made in the wall. It is found in wall-mounted boilers. The main disadvantage is energy dependence.

heat exchanger It is a box with tubes inside. Water circulates through them. The node may consist of different alloys, which affects its service life. A double-circuit device is equipped with two radiators, a single-circuit device is equipped with one. Varieties:

• Steel. The easiest and cheapest option. The material is resistant to temperature extremes, but has low thermal conductivity and fragility.

• Copper. It is an alloy resistant to corrosion and temperature extremes. Copper conducts heat seven times better than steel, so the radiator is more expensive. It has a limited heating temperature.

• cast iron. Resistant to corrosion and high temperatures. It conducts heat well, but has a lot of weight. Therefore, it is more often used for floor boilers in the form of a collapsible structure.

Circulation pump creates pressure in the system for constant circulation of water. Not all models have a pump. But if you choose appliances for gas heating, it must be present in the design.

Expansion tank. When heated, the coolant expands, so the tank accepts its excess in order to avoid an emergency.

chimney. In atmospheric models, the pipe is connected to the body branch pipe and led to the chimney. In turbocharged types of boilers, a coaxial chimney is created, the other end of which is connected to a hole in the wall.

Electronics and control module includes sensors, wiring, circuits: everything that allows the device to function stably.

Security automation. These are sensors that protect the device from such problems:

• lack of traction;
• overheat;
• no flame in the burner.

If the system fails, the sensors send a signal to the control module and the product stops working.

Principle of operation

Cold water enters the system through the mains. Through the circulation pump, it is fed into the heat exchanger. The gas valve opens and fuel enters the burner through the nozzles. The ignition electrode is activated, from which the gas ignites.

The boiler works for heating or providing hot water (DHW). Switching takes place using a three-way valve. During operation, combustion products are discharged through the chimney. When the set temperature is reached, the flame goes out. Some models have an external thermostat, so when the temperature drops, they immediately turn on the heating.

The workflow is shown below:

How should the boiler work? It depends on its variety.

According to the installation method, the equipment is divided into two types:

• Wall. Small devices of low and medium power. Often installed in apartments and houses with a small area. Placing on the wall saves free space.
• floor standing. Oversized structures that require a lot of space to accommodate. But they are able to simultaneously heat and provide hot water to large areas.

According to the structure of the chimney, the type of removal of combustion products:

• atmospheric;
• turbocharged.

We have described their modes of operation above.

By functionality:

• single circuit. Ensure optimal heating performance.
• Dual circuit. They are equipped with two radiators, so they can provide a heating system and fill taps with hot water.

Burner types:

• Modulated. Smooth automatic adjustment of flame strength.
• Plain. Without any adjustment.

Ignition type:

• Piezo ignition. The launch is carried out by pressing a button and deforming the piezoelectric element. Advantages of ignition in energy independence. Disadvantages: constant manual start, high fuel consumption.
• Electronic. The built-in transformer is activated, which is controlled by automation.

According to the principle of work:

• Convection. The usual scheme, according to which the heat during combustion passes to the coolant (water).
• Condensation. In addition to conventional heating, the device uses the heat of water vapor. Condensate accumulates in an additional heat exchanger. Therefore, Ariston Class Premium Evo models have high efficiency.

Conventional boilers are volatile, but there are devices that work on a different principle. They are installed in rooms with a chimney and have an open combustion chamber. Ignition occurs with the help of a piezoelectric element. Some of them (for example, "Conord") have a cast-iron radiator.

The equipment can operate on natural and liquefied gas, and is mounted on a wall or installed on the floor. There is a parapet installation option - the gas boiler is mounted on an external wall, has a closed combustion chamber and is connected to a coaxial pipe.

Having considered the device and features of water heating equipment, you can choose the best option for your home. The video will help you better understand the topic:

For many years, those who want to save on fuel have been switching their car from gasoline to gas. Gas equipment is subject to improvement in terms of safety and environmental friendliness. Now the latest model is the 5th generation gas cylinder equipment. But, the most common is the 4th generation. In today's article, we will consider what the 4th generation HBO is, how to install it.

What is HBO?

HBO is gas-balloon equipment, it is also gas bottle equipment, it is also gas equipment for a car. It was created in order to be able to supply gaseous fuel to an internal combustion engine (ICE).

HBO is a special equipment that stores gas fuel and supplies it to the internal combustion engine system.

Due to the cheap price of gas, it has been widely used. LPG equipment is installed both on commercial vehicles and on private cars.

There are two types of gaseous fuel for LPG engines:

• Compressed, that is, compressed natural gas (CNG). This includes methane gas (CH4).
• Liquefied petroleum gas (LPG). This includes gas BUTANE (С4Н6), PROPANE (С3Н8), their mixture.

Methane is a very dangerous gas. Contact with a small amount of it on a person leads to loss of vision or death. Therefore, there are many cases - loss or deterioration of vision in people who drank fake alcoholic beverages diluted with methyl alcohol (CH3OH). Therefore, propane, butane cylinders are used.

The principle of operation of HBO 4 generations

Gas-balloon automotive equipment has become popular due to the fact that it is capable of injecting combined fuel, that is, gas + gasoline. Also, at the request of the driver, he can switch from the combined method to only gas supply or, only to gasoline supply to the internal combustion engine system. Also, switching modes can occur automatically. The control panel of the fourth HBO is small. It is illuminated by an LED indicator indicating the amount of gas in the cylinder and on which there is a switch for fuel supply modes.

Basically, the gas equipment control panel is installed on the left side under the steering column, next to the headlight adjustment buttons.

Fuel indicators

There are 5 LED information indicators on the HBO 4 control panel: 4 green and 1 red. They are located in one row.

1. If 1 green LED signal is on, it means that there are 10 liters of gaseous fuel left in the cylinder. 10 liters of gas is enough to travel a distance of up to 200 km.
2. If the red LED light turns on, it means that there is a minimum amount of fuel left. The emergency amount of gas is enough to drive from 50 to 80 km. When the red indicator turns on, you need to go to a gas station.

Gas equipment control panel

There is also a red indicator on the remote, in the top corner. It works in flashing mode. When blinking, it means that the engine is currently running on gasoline, but will soon switch to gas. The red light on the remote control flashes whenever the car has just started. After the engine reaches operating temperature, the HBO system will switch to gas.

What do you know about the brand of fuel EKTO? What is better, we examined, deduced the pros and cons of using this fuel, developed by LUKOIL.

The ability of the HBO system to operate in a combined mode increases the reliability of the stable operation of the internal combustion engine of the machine. Also, one refueling allows you to travel a greater distance. Especially, it is convenient in sparsely populated areas, where the distances to gas stations are large or if the fuel is not of high quality. In addition to the above advantages, you can easily make the car not stolen. To turn on the car's anti-theft, it is enough to remove the switch, without which neither gasoline nor gas fuel will enter the internal combustion engine injection system.

If the car has an engine with an expensive fuel injection system with a catalyst that purifies exhaust gases, then the installed 4th generation HBO system will reduce fuel consumption and extend the life of the catalyst itself.

Such equipment is assigned to engines that meet the requirements of environmental standards for harmful substances EURO 3 and higher. This equipment has a pulsed fuel-air mixture injection, which executes the commands of the controller of a separate control unit with a microprocessor. The control unit (CU) reads and generates data from the microprocessor and gives control signals that open the electromagnetic gas fuel injection nozzles and that block the gasoline supply nozzles.

The data by which the system creates the desired concentration for supply to the engine system:

1. Gas pressure.
2. Reducer temperature.
3. Gas temperature.

If a case arises when the pressure of the incoming gas decreases and becomes lower than the maximum allowable, the HBO 4 system turns off the gas injectors and turns on the petrol injectors. Thus, the operation of the internal combustion engine is transferred from gas to gasoline.

The device and scheme of operation of HBO 4

HBO device:

1. Cylinder for gaseous fuel.
2. Multivalve.
3. A unit that prepares, distributes and injects gas fuel into the internal combustion engine system of a car.

The multivalve device is mounted on the neck of the gas cylinder. It serves for the possibility of refueling the cylinder, for the normalized economical consumption of gas when the engine is running and consuming gas.

Multivalve device:

• Inlet or filling valve.
• Exhaust or outlet valve.
• Emergency or speed valve.
• Balloon filling arrow.
• Fuel intake pipe.

An emergency or high-speed valve is installed to timely shut off the flow channel in the event that the gas flow rate has increased sharply, for example, if the tube from the cylinder to the internal combustion engine is damaged.

The device of the gas preparation and distribution system:

1. single-stage, if the cylinder is propane. The gearbox is two-stage, if there is methane in the cylinder. The function of the gearbox is that it converts the fuel from a liquid state to a gaseous state. A two-stage reducer (when there is methane in the cylinder) can still lower the pressure.
2. Nozzle ramp with jets.
3. Filters for gas purification.

Attention! It is recommended to start the car engine on gasoline. It is possible to start immediately with gas supply, but this is the case when the gasoline fuel system is faulty. Starting gas is abnormal.

If you start the engine immediately on gas, then the service life of the gearbox quickly expires, since the diaphragm of the gearbox experiences large pressure loads. When starting with petrol, when the engine warms up, the system automatically switches to gas. And when the gas pressure drops, the system automatically switches the engine to petrol mode. When switching from gas to petrol, an audible signal sounds to let you know that the gas has run out.

During operation, the 4th generation gas cylinder equipment system prevents pops from appearing in the inlet channel, which can be in equipment with poorly synchronized mechanical supply systems. Due to this, the fourth generation HBO can be safely installed on engines with plastic manifolds and adjustable gas-air mixture supply geometry.

After installing gas equipment in the car, you need to adjust the ignition timing. The ignition is corrected because the combustion time of gas is longer than that of gasoline and the octane number is higher. The gas system requires early ignition, that is, the advance angle must be greater.

To improve the operation of internal combustion engines on gas, spark plugs are specially made. But ordinary spark plugs also provide good uninterrupted operation of the car engine. The ignition is adjusted by means of an electronic variator.

As in the case of an internal combustion engine without LPG, a motor with 4th generation gas-balloon equipment can be tuned, that is, an internal combustion engine chip tuning can be performed. As a result, the nominal technical characteristics of the motor will improve and the temperature will change, upon reaching which the fuel supply mode will automatically switch.

Recommendation of HBO installers: install additional filters to protect the injectors and gearbox from dust particles, thereby extending their working life and increasing the reliable operation of the car engine. Where does the garbage in the balloon come from, you ask? It often happens when cylinders are filled from old containers or from new ones, but the residues are sucked out, particles of dirt get into the cylinder.

Advantages of HBO 4th generation

If we compare automobile gas equipment of the 4th generation and previous modifications, then the following advantages will be revealed:

• Due to the fact that the gas-air mixture is very precisely formed, of the required concentration, in the required proportion, the maximum power of the internal combustion engine of the machine is achieved.
• The power unit works quite softly, without jerks and triplets. The pops that were installed with HBO 3 and earlier generations are completely absent.
• Due to the fact that the mixture is created in the desired proportion, it burns qualitatively and completely, resulting in increased environmental friendliness of the engine. The engine with LPG 4 complies with the EURO 3/4 environmental standard. In this case, the motor power is only lost up to 2%.
• Due to the fact that it is possible to combine software and hardware EOBD diagnostic systems, 4th generation gas cylinder equipment can be installed on all modern cars.
• The connectors of the blocks are unique, they cannot be confused, so there are no errors during the installation of HBO due to the ignorance of the masters, and the installation itself is simplified.
• Due to the use of the most modern equipment in the manufacture of HBO at the plant, fourth-generation equipment is reliable and relatively inexpensive.

Causes of failure of HBO 4th generation

During operation of a vehicle with such equipment installed, the performance of the internal combustion engine may decrease. Such problems occur for the following reasons:

1. The gearbox has failed.
2. Reducer or dispenser set incorrectly.
3. The filter is clogged due to which the gas supply in the required volume is not ensured.
4. The temperature of the gas-air mixture is low. This is often the case in winter.
5. Due to the low temperature of the reducer, the mixture is too enriched.

If a car with HBO 4 does not start well:

1. Gearbox diaphragm failed. This happens if you often start the engine immediately on gas.
2. Reducer set incorrectly.
3. The flow solenoid valve is not working properly. The valve may “fail” due to mechanical sticking of the armature or if a short circuit (short circuit) of the turns has occurred.
4. The electronic control unit refuses to give a signal to start the gas supply or gives an incorrect signal that does not correspond to the required amount of fuel.
5. The car battery is low, which is why the solenoid valves do not work at startup. The battery charge may decrease due to a malfunction of the starter, generator. Should also be checked.
6. Reduced compression in the engine cylinders. This may be due to wear of the smooth surfaces of the parts of the cylinder-piston group or damage to the rings and engine valves.
7. In the case of using a vacuum reducer, the engine may not start due to the fact that a small vacuum is created in the intake manifold, which is insufficient for gas intake. In this case, a separate electromagnetic pump helps out, which forcibly supplies fuel.

Maintenance of HBO fourth generation

To increase the service life of the equipment and the quality of the internal combustion engine of the car as a whole, it is advisable to perform the following tasks weekly:

1. Conduct a visual inspection of the system for leaks to prevent the possibility of gas leakage. If there is a suspicion of a gas leak, you can check it with a soapy solution, which must be diluted and soap suds applied to the pipes, hoses, fittings, and at the installation sites of the clamps. Also, in the event of a gas leak, a characteristic ODORANT odor will appear.
2. Also, once a week it is necessary to drain the liquid that accumulates in the gearbox. For this, there is a special plug in the gearbox at the bottom. If the liquid from the reducer is not drained at all or is drained very rarely, then the drain hole may coke and clog the hole, after which the normal operation of the evaporator reducer occurs.

Also, there are recommendations for maintenance of HBO 4, which should be done once a month:

• Clean or change the filter. To do this, disconnect the inlet pipe and remove the filter. Depending on the degree of contamination, clean or replace the filter element. If the filter was cleaned, then there is a small magnet in the filter element, which must be replaced after the filter has been cleaned.

• Disassemble and clean gearbox. This work requires extra care not to dent or tear the membrane. After the gearbox has been cleaned and assembled, it must be checked for leaks.

Video

This video shows and talks about the types of gas equipment for cars. A useful video, it even shows an excerpt of how a full gas cylinder is thrown from the 9th floor and it did not explode.

In this video, the car Suzuki Grand Vitara with HBO 4 generations. Since the fuel consumption of the Suzuki Grand Vitara is very high, it is advantageous to transfer it to gas equipment.

This video shows the aftermath of a gas car explosion.

In this video, gas cylinders are tested for durability. For those who are thinking whether or not to install HBO in a car.

The gas station is a compressor station. It is used to refuel cars, vehicles of various sizes - minibuses, buses, minibuses and equipment used in agriculture. suitable for engines that have been specially reconfigured for gas operation.

How gas filling works

It is connected to a gas pipeline, and the gas pressure is set to 200 atmospheres. Thus, the gas will fill the cylinders in the car. Mini gas stations are often used, as they are fashionable to connect to so many gas networks at home, they are small in size and light in weight. The small compressor can be powered by 220 volts. This allows you to operate the compressor with methane even at home. It can be installed at small enterprises serving transport - transportation, taxis and at stations engaged in agriculture. You can connect to the network in a country house or cottage.

Refueling of the machine is usually carried out in a maximum of 6 hours. But with the help of some transformations, it is possible to increase the capacity of the compressor, which will significantly reduce the time spent on refueling the car.

Why choose gas over petrol

1. Gas in any form (propane or methane) burns softer than gasoline. This in turn reduces the load on the engine;
2. You can increase the time between repairs up to one and a half times;
3. Engine oil will need to be changed 2 times less often;
4. The engine will run less noisy - 2 times, or even more;
5. The operation of spark plugs will increase - up to 40 percent;
6. The toxicity of gases will generally decrease by 2 times.

Benefits of a gas station

You can often hear that gas stations are unsafe to operate. It is believed that it can harm the operation of the engine, which will subsequently lead to a decrease in engine power, and fuel consumption will increase rapidly.

However, these fears are incorrect. Cars have been running on gas for a relatively long time and it is safe to say that they have less explosiveness than those cars that run on gasoline.

Gas, like gasoline, mixing with air in some cases can ignite very easily. But substances are added to the gas that make the leak noticeable by smell. What can not be said in the case of gasoline. In an emergency, the filling multivalve automatically stops the gas flow.

Gas filling device

In order for the machine with gas to be located in a closed area, there are 3 unconnected devices for gas constipation on the pipelines that exit the cylinder.

To transfer the machine to operation on gas, you do not need to make great efforts. The engine does not need much adjustment.

The octane number of gases is 105 and in all operating modes the engine will work stably, without detonation.

Operating conditions

The pressure in the cylinder is greatly influenced by the ambient temperature. Owners of cars running on gas need to carefully monitor that the car engine does not overheat. Even if the temperature increase is minimal, the pressure in the cylinder can increase significantly. There is a device in the car fittings that allows you to block the refueling channel as soon as it is 80% full. After that, no refueling takes place.
To date, there are many manufacturers who are engaged in the manufacture of gas equipment. It does not matter what size the engine has, as the equipment works stably and well at different sizes. Only the storage of the cylinder can become a problem - it will take up a lot of space in the trunk. But it can also be quickly solved - the purchase of a toroidal cylinder, which can be put in the location of the spare wheel. The volume of the gas cylinder can be up to 50 liters. The useful volume of gas is always less than 20% than the real one.

The use of gas in cars is usually comparable in consumption to gasoline, but depending on the time of year and how often the car is used, more can be consumed.
Working on gas is good

Most technical devices and vehicles run on gasoline, and if the production of cars increases, then the oil reserves will run out very soon. Natural gas is an excellent replacement for gasoline today for several reasons:

1. Economic - the cost is less, which means that the costs are also reduced;
2. Ecological - no emissions harmful to nature;
3. Resource - oil reserves are decreasing every year.

Without using oil in the operation of cars and using it only in those areas of activity where it is impossible to do without it, it is possible to achieve greater efficiency and economic stability.

More than 3.2 million vehicles run on gas. Europe is rapidly switching to the use of gas, which has a positive effect on the state of our environment.

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Fuel systems of cars differ from each other by the principle of supplying fuel to the engine. Since gas equipment interacts with the fuel system, it is also divided into types. Each type of HBO differs in components and equipment. For ease of understanding in society, it is customary to divide gas equipment into generations (1st, 2nd, 3rd, 4th generations).

OMVL produces equipment of all generations. True, cars running on gas equipment of the 2nd and 3rd generation are becoming less and less every year. Therefore, HBO of the fourth generation is popular in Russia (simplified names: “HBO 4 generations” and “HBO 4”).

The principle of operation of the 4th generation HBO is similar to the principle of operation of the gasoline fuel system. As with any injection system, fuel is supplied to the intake manifold through pressurized injectors. In the gasoline system, pressure is created by an electric fuel pump located in the gas tank. Gas fuel is initially stored in a cylinder under excess pressure, therefore, a reducer is used in the set of gas-balloon equipment, which lowers the pressure to the desired level before being fed into the engine.

The pressure reduction process is accompanied by the absorption of a significant amount of heat, therefore, as in early systems, the gas reducer in HBO 4 is connected to the engine cooling system.

The HBO 4 system provides constant quality control of the fuel mixture entering the engine, therefore, cases of failure of the valve-piston group of the engine are minimized and, importantly, dynamic characteristics close to those of "gasoline" are maintained. And the principle of phased gas supply to the area close to the intake valve prevents the possibility of ignition of the mixture and the appearance of “pops” in the intake manifold.

Components of gas equipment

Scheme of installation of gas-cylinder equipment

1. Gas bottle.
2. Multivalve / Balloon valve.
3. Remote filling device (VZU).
4. Pressure regulator (reducer-evaporator).
5. Gas filter.
6. Ramp gas injectors.
7. Electronic control unit (ECU) for the LPG system.
8. Gas pressure and vacuum sensor.

Refueling

There are two different gaseous fuels: LPG - propane-butane and compressed natural gas methane. Abbreviated names are used for ease of understanding. propane And methane. Professionals sometimes use the abbreviations CIS and KPG.

The gas is pumped into balloon (1) pressurized by means of a filling nozzle, which is attached to remote filling device (VZU - 3). VZU can be embedded in the hatch, where the hole for refueling gasoline is located, it can be in the bumper, or it can be left in the trunk. The VZU is equipped with a safety filling valve. Refueling ends automatically when the tank is 80% full. The role of blocking is played by a special float, which, bending to the maximum possible position, closes multivalve (2). The multivalve is the first HBO security system. Depending on the type of safety system, multivalves are divided into classes A and B. The first has an additional valve that relieves pressure when it reaches 25 atmospheres.

The principle of operation of gas equipment

From the cylinder, through high-pressure pipes, the gas enters reducer-evaporator(4), where the pressure is reduced to 1 atmosphere. IN gas filter(5) propane-butane is cleared of suspended particles. For methane the filter is not used. Methane is immediately fed into the combustion chamber of the engine, through gas injectors(6). Gas is supplied to each cylinder of the engine through a separate nozzle. Thus, gas injectors with four nozzles are installed on a four-cylinder engine. The productivity of gas injectors is changed by screwing into the outlet nozzles screw-in screws with different flow sections, ensuring the perfect operation of the system, both on small cars and on large engines.

The whole system is controlled control unit(7). The 4th generation HBO uses an electronic control unit (ECU) that reads the petrol injector opening time signal from the petrol system control unit and determines the optimal gas injector opening time. The HBO control unit allows you to switch the signal from gasoline to gas injectors, blocking the supply of gasoline. In the passenger compartment, a touch button-switch of gas and gasoline modes is installed. At any time, both on the move and at idle, you can switch from petrol to gas and vice versa.

HBO kits of the 4th generation are equipped with an additional sensor (8). The pressure and vacuum sensor (8) measures the difference between the vacuum in the intake manifold and the gas pressure in the injector rail. Another common name for this sensor is the MAP sensor.

Advantages of HBO over a gasoline fuel system

Save! — Propane costs two times cheaper than gasoline, methane - almost three.

• HBO is necessary for business. Truck, van and taxi owners have long learned to cut costs by saving on fuel.
• HBO is indispensable for volumetric engines. SUV owners prefer gas to gasoline.
• We recommend HBO to optimize the family budget. Who refuses to pay for fuel for 10-15 thousand rubles. less monthly.

Appreciate the quality! — Propane and methane are high-quality automotive fuels with a high octane rating (100-105) and a minimum amount of harmful impurities.

• Gasoline has a greater amount of harmful impurities in relation to the same impurities in propane-butane. Methane is a natural gas that does not contain these impurities.
• Deposits associated with the presence of impurities in gasoline cause deposits on the internal walls of the engine's combustion chamber, on pistons and valves. That is why used cars that run exclusively on gasoline are more likely to need an engine overhaul than the same cars that originally use gas fuel.

Travel! — The installation of HBO contributes to an increase in the autonomous running of the car by at least 2 times.

• Gas equipment does not affect the operation of gasoline in any way. Both systems exist in parallel and can be interchanged at any time.
• The use of gas fuel when traveling abroad will significantly reduce costs.

Take care of nature! — Exhaust from gas fuel is less toxic than from gasoline.

• More complete combustion and a small amount of impurities in gas fuel reduces harmful emissions in exhaust gases by 30-50%.
• The absence of lead compounds extends the life of catalytic converters, which is essential for limiting emissions.

Stay calm! — HBO and gas are safe.

• A gas cylinder is much stronger than a gas tank and has several levels of protection. In an emergency collision, the gas cylinder can withstand loads 10 times greater than the margin of safety of the gas tank.
• Gas fuel is no more dangerous than gasoline, and its vapors are heavier than air, which eliminates the possibility of their accumulation under the ceiling of the garage or in the car.

Advantages of "OMVL" over systems of other brands

Reducers "OMVL"

Reducers "OMVL" are stable in all modes of operation of the engine: at low, medium and maximum loads. All OMVL gearboxes are equipped with a patented vacuum pressure control system, which allows you to achieve stable operation even in the most aggressive weather conditions. They continue to perform excellently even at temperatures below -25°C, unlike gearboxes from other manufacturers.

Availability and maintainability are also indisputable advantages of OMVL gearboxes over other brands. Each stage of production is strictly controlled for compliance with all applicable standards. Each OMVL gearbox is tested with an inert gas, which eliminates the slightest gas leakage during operation on a vehicle.

It should be noted that all OMVL gearboxes are produced exclusively in Italy.

OMVL injectors

OMVL high-speed injectors, which provide accurate gas dosing over a long period of operation, are especially popular among many manufacturers of gas-cylinder equipment electronics. Only "OMVL" injectors can meet the requirements of even the most sophisticated consumers at a low cost. The minimum stable injection time provided by the OMVL GEMINI injector is 1.7 ms, and the OMVL FAST LIGHT injector is 2.5 ms. Not all manufacturers of premium-class HBO have such an indicator. OMVL injectors have a unique configuration that allows mounting in various positions.

The high quality and relatively low cost of spare parts for OMVL injectors are appreciated all over the world. Maintainability is also an advantage of these injectors: in case of failure of the injector rail, there is no need to change it entirely, it is enough to change only the faulty part. You can change the ramps of most other manufacturers only in their entirety, which will increase the cost of servicing LPG equipment.

The OMVL ECU works perfectly on modern vehicles thanks to a huge number of different strategies and adaptations, including adaptations based on the vehicle's OBD system. Quality and reliability are confirmed by warranty obligations - three years, without mileage restrictions, rarely which manufacturer can afford it.

All settings are made automatically, leading to a minimum of intervention in the setting by the wizard
for the installation of HBO.

Which worked remarkably well on carburetor engines, it was difficult to use fuel-injected engines. This led to the emergence of HBO 2 generations.

Description and equipment

HBO 2 was intended for transferring both carburetor and fuel injection engines (mono injectors and other injection engines) to gas fuel. It should be noted that according to the European classification of generations, our HBO 2 is also the first generation among Europeans.

Unlike the first generation, the HBO 2 kit includes an electronic evaporator gearbox instead of a vacuum one, and instead of the usual fuel type switch button, a fuel selection button equipped with electronics appears.

Carburetor

The 2nd generation HBO kit for the carburetor now looks like this.

• filling valve;
• filling and consumable
• coarse filter (often built into the evaporator reducer);
• -evaporator (electronic);
• button for switching the type of fuel "Gas" - "Petrol" with wiring. Accordingly, each type of engine (carburetor or injector) has its own button;
• mechanical dispenser (with one or two "greed" screws to adjust the amount of propane-butane mixture supplied to the car engine);
• mixer (for mixing propane-butane mixture with air);
• gasoline electro valve (which shuts off the supply of gasoline to the carburetor when the engine is running on gas).

Injector

HBO 2 on the injector has a set of equipment similar to the carburetor, with the exception of a few changes. In the configuration for the injection motor in the above list, instead of a gasoline solenoid valve, an injector operation emulator and a lambda probe emulator are used.

When the engine is running on gas, the injector emulator informs the petrol controller about the alleged operation of petrol injectors. This helps to avoid error messages in the "check engine".

In addition to the 2nd generation HBO emulators, a so-called “cracker” is installed on the injector. This is an anti-cotton valve that prevents the destruction of the intake manifold. Unlike aluminum carbureted versions, it is often made of plastic. The valve opens with excessive pressure in the intake manifold, and after normalizing the pressure, it closes again. Basically it is mounted on the air filter housing.

Principle of operation

The principle of operation of HBO 2 generations does not fundamentally differ from the principle of operation of HBO 1.

• The liquefied propane-butane mixture, which is in the cylinder under pressure, is fed through the multivalve and the flow line to the gas electrovalve.
• Further, when the fuel selection button is switched to the gas position, the gas solenoid valve opens the supply of liquefied gas mixture to the evaporator reducer, and then, through the dispenser and mixer, to the engine.

The difference from HBO 1 is manifested only in the fact that the use of the fuel type selection button, equipped with electronics, allows you to start the car on gas fuel without additional manipulations. If the engine does not start within a certain period of time, the button electronics will automatically cut off the gas supply to the evaporator reducer, signaling this with LED indicators. On a physical level, this means de-energizing the gas electrovalve.

For the next start, you will either need to switch the fuel type with the button to gasoline, or turn the ignition off and on.

VZU installation

As in the previous paragraph, you should decide on the location of the remote refueling device. Usually it is mounted under the bumper of the car, because. this is the least labor intensive option.

The very first installers did not bother with the placement of the VZU and mounted it directly in the trunk of a car next to the cylinder. It's even easier. But with this installation method, you will have to open the trunk to fill the cylinder.

In more expensive and modern cars, the VZU can be placed in the gas tank hatch. In this case, the aesthetic appearance of the car will not suffer, but you need to carry a special adapter for the gun with you. And when refueling, give it to the gas station employee.

Gas line laying

The next step is to lay the gas line from the HBO cylinder to the engine compartment. The laying is carried out under the bottom of the car, positioning the pipeline so as to minimize the risk of damage to it. Some installers advise placing the gas line next to the gasoline line. For security reasons, we would still advise to smash these highways.

Note! The outlet and inlet of the line are made slightly larger in diameter in order to be able to insert seals into them.

Read about what materials are used for highways.

Mixer installation

The next step is to choose a mixer that will be installed between the car's intake manifold and the carburetor. It is imperative to ensure the tightness of the connection and prevent possible air leakage at the connection points.

Installation of solenoid valves

The next step is to install gasoline and. It should be noted that there are several types of electromagnetic gas valves. The best option would be to choose a valve with a coarse filter.