The Course Of LPG Conversion Vehicles

With LPG rebuilding begin simultaneously from both sides. One assembler is responsible for installing so-called "Ancestor", ie. installation of the gearbox control unit injectors cut, installation of gas injectors and wiring. Second assembler installs LPG tank, filling connection, install the gas supply pipe, multivalves and switch.

In the first step technician installs the injection nozzle：

（1）Through these nozzles, the gas is fed to the suction pipe and subsequently fed into the engine.

LPG injectors (2) are tubes connected to the injection nozzle (1). During their opening and the size of the dose control unit controls the fuel LPG depending on engine load.

In the next step, the installation of the reducer (3) and safety valve for LPG gas. Reducer after heating to the appropriate temperature (about 40 ° C) converts the liquid phase LPG gas phase, which is fed through the injector into the engine. Between the reducer and the injector is placed so. LPG gas phase filter (4). This filter collects debris from lower-grade gas injectors and protects against potential damage. The recommended interval for replacement of the filter is 20,000 km.

LPG system still contains filter the liquid phase, which is between the tank and the reducer (usually located at the reducer along with elektormagnetickým valve). Recommended interval for replacement of the filter is 40,000 km.

After the installation of pipes and hoses to supply LPG followed by the installation of electrical equipment.

Fix LPG control unit (ECU) (5) - in most cases the unit is mounted as close to the battery as it is powered. The unit manages all operations carried out by the LPG system.

Switch (6) install by the customer at the place where it is in terms of the structure of the vehicle assembly feasible.

In the rear, meanwhile, is being installed LPG tank (7) and multivalves (8)

LPG tanks are divided into:

·Toroid – give instead of a spare wheel, so that the LPG tank took as little luggage space in the vehicle and if the vehicle has a margin beneath the vehicle, placed outside the toroidal tank under the vehicle.

·Cylindrical – give it where it can not be used toroidal tank or to the customer when the majority of demand for larger capacity tanks.

Multiventil - has several functions. Allows filling the tank, a float LPG senses water level in the tank and after opening the solenoid valve distributes gas in the engine compartment.It also runs the filler neck assembly (9), - filling neck can be mounted in two ways：

Bumper – most commonly used

Under the cap – install, where it allows the technical performance of the vehicle.

Copper pipe encased in black spaghetti insulation (10) (including utility cables measuring the level of gas), which leads from the multivalves LPG tanks to the front motor part is installed in accordance with applicable regulations and is laced with clips (11).

On some vehicles are susceptible to damage valves and valve seats is recommended to apply some of the ways valves.

The following options are available:

Blending of gasoline - unless the customer chooses this option, the system selects a control unit that has this feature.

Electronic (12) - fed by the program, which is dosed accurately and protection is more efficient and uses less additives. Here are the higher costs.

Vacuum (13) - dispenses depending on how fast you are going. Which is not as accurate as the electronic and has a greater consumption of additives. Acquisition costs are lower than for e-primase.

Installation is finished and will be the first refueling. Immediately after refueling, check all connections from the tank to the injectors LPG.Use a computer to set basic parameters of the engine and perform automatic calibration. Subsequently, the gas adjustment maps by petrol maps in all modes of operation. Fitting end the diagnosis engine.

 Refer to：https://www.lpg-autogascentrum.cz/progress-rebuilding-lpg-cng/

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