What is HBO 4 generations?

Due to the fact that gasoline is constantly becoming more expensive, many motorists are thinking about transferring their "iron horses" to gas fuel. According to statistics, in most cases they choose propane-butane, but some prefer to use methane. In order to carry out such a transfer, it is necessary to install LPG equipment on the car, that is, specialized gas equipment.

It is a set of devices that allow storing and supplying gaseous fuel to an internal combustion engine. To date, six generations of LPG equipment have already been developed, but the fourth is the most widespread and widely used. Therefore, for those motorists who intend to use gas, not gasoline, as fuel, the question inevitably arises: what is 4th generation HBO? In order to answer it, it makes sense to first give a brief overview of all generations of LPG equipment.

Generation HBO

Regardless of whether to which generation this or that gas cylinder equipment belongs, it consists of three main components:

  • Gas cylinder;
  • Systems for gas treatment and gas supply to cylinders;
  • Multivalve.

The multivalve consists of a flow and filling valve, an intake pipe and a gas level indicator. In addition, it has a so-called high-speed valve, which is designed to prevent gas leakage in the event of a line damage.

The first generation of LPG

Such gas equipment was installed on carburetor and simplest injection engines. It can use both electronic and vacuum reducers, which are necessary in order to reduce the gas pressure before being fed into the cylinders. Its amount is regulated by a dispenser, and the gas-air mixture is prepared in a special mixer, which is mounted in front of the carburetor. HBO of the first generation does not meet modern safety standards and is not used now.

Second generation LPG

This generation of LPG equipment is installed on vehicles with injection engines equipped with catalysts and lambda probes. This LPG unit includes an electromechanical gas dispenser connected to an oxygen sensor and functioning on the basis of the feedback principle. LPG equipment meets the requirements of EURO 1.

Third generation LPG equipment

This LPG equipment is, in fact, HBO of the second generation, equipped with a fuel metering system using a gas injector controlled by a special electronic unit. Gas is supplied to the intake manifold using mechanical injectors. It should be noted that the third generation HBO has not become widespread in Russia.

Fourth generation LPG

LPG equipment of this generation uses a distributed synchronized gas injection system. The gas-air mixture supply for each cylinder is controlled separately using an electronic control unit. In principle, the scheme of operation of the fourth generation LPG is the same as that of a gasoline injector.

Fifth generation of LPG

and not in a gaseous state. For this reason, there is no mixer and evaporator in the design, but there is a gas fuel pump and a pressure regulator. In addition, the operation of this LPG unit is controlled not by a separate, but by a standard engine controller.


Sixth generation of LPG

This generation of LPG is by far the last and is considered the most advanced. Such equipment was specially developed for engines with direct fuel injection, and it is carried out not through special gas, but through standard gasoline injectors. HBO of the sixth generation complies with EURO 5.

Read also : For more information about what is HBO in the car.

Features of the fourth generation LPG equipment

As mentioned above, at the moment most experts consider the fourth generation LPG equipment to be the most reliable and optimal. This LPG system separately controls the supply of the fuel mixture to each of the nozzles, in addition, it allows you to quickly and easily switch from gas to petrol and vice versa (this can be done both manually and in automatic mode). As a rule, the control panel for LPG equipment in the passenger compartment is installed directly under the steering column, has a gas level indicator and a fuel type switch.

The possibility of using both gasoline and gas is not only very convenient, but also allows you to significantly increase the reliability of the power unit. In addition, it is very beneficial to the owners of those cars that are equipped with expensive catalysts for cleaning exhaust gases, since it significantly extends their service life.

The fourth generation LPG system very accurately doses the gas mixture for each of the engine operating modes, and this ensures maximum fuel economy. The motor runs very "softly", "pops" are completely excluded, which are very typical for LPG equipment of the first three generations. It is also very important that the engine loses very little power when using such gas equipment (as practice shows, no more than 2%). An important advantage of the fourth generation SSS is also a very successful combination of such factors as:

  • High reliability;
  • Versatility (it can be installed on various brands and models of modern cars);
  • Affordable price.

It should also be noted that with proper operation and proper, timely maintenance of this gas equipment can serve for a long time.

What is included in the 4th generation LPG kit?

The 4th generation LPG kit, just like other generations of LPG equipment, includes:

  • LPG bottle;
  • Gas preparation and gas supply system;
  • Multivalve.

As for the gas cylinder, it is made of metal and is standard for most LPG systems. The multivalve is installed directly on it (or rather, on its neck), with its help, both gas filling and its consumption are provided.

The system for the preparation of gas and its supply to the cylinders includes:

  • Reducer;
  • Injector rail with installed jets;
  • Gas filter.

A reducer is required to convert the gas from a liquid to a gaseous state, the injector rail is used to supply fuel to the cylinder, and the filter is used to filter the gas.

See also : Methane or propane - which is better for a car?

Video about LPG 4 generations