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CNG Systems and components

System OMEGAS DIRECT LANDIRENZO Natural gas system for direct injection engines


Natural gas system for direct injection engines

The LANDIRENZO OMEGAS DIRECT system is designed for the conversion of direct injection engines to natural gas.

The Landi Renzo natural gas system meets the strictest European standards for polluting emissions, helping to improve air quality.

Advanced technology allows the Omegas Direct system to guarantee advanced performance and ongoing safety and durability of the engine over time. To ensure greater safety, the latest generation injector rail guarantees extreme precision in fuel injection, optimising combustion.

The Omegas Direct natural gas system permits connection with the OBDII system via the K and CAN protocols to prevent malfunctioning and permit advanced diagnosis of the gas system.

Omegas Direct may be adapted to vehicles with different cubic capacities, including turbo engines.

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  • For every car

  • Every street and climate

  • 100% Italian technology

  • ISO 9001
    ISO TS 16949

  • Guaranteed 2 years

How to recognize a direct injection car?

The engines of the direct injection cars differ from the others because their fuel system allows to enter the fuel directly into the combustion chamber.
This results in greater engine efficiency.

To identify the direct injection cars the manufacturers have adopted abbreviations in the names of the engines.

Each constructor adopts particular acronyms, for example:

  • GDI
  • TFSI
  • JTS
  • FSI
  • TSI
Example of positioning the abbreviation on the motor body:

Example of positioning the abbreviation on the motor body:

Why convert it to natural gas?

Converting your car to natural gas direct injection is valuable for many reasons:

* The savings % varies depending on the type of route, the cost of fuel and the model of the vehicle.

How the system works




The LANDIRENZO OMEGAS DIRECT electronic control unit is designed to suit the particular requirements of direct injection engines and to guarantee regular cleaning and protection of injectors, which inject small quantities of petrol in alternating cycles even when the vehicle is running on gas. These cycles result in minimal petrol consumption, are optimised by the system and are not perceived by the driver.

OMEGAS DIRECT permits connection with the vehicle's OBDII (On Board Diagnostic II), dialoguing with the petrol control unit via CAN or K line to prevent malfunctioning. The diagnostics function also checks the connection of the petrol injectors and the functioning of individual gas injectors.




A two-stage compensated membrane reducer with a water/gas heat exchanger, filter, high pressure gas solenoid valve, safety valve and a manometer with a gas level sensor. It guarantees optimal stability of outgoing pressure, benefiting all gas systems. Calibrated for delivery at a pressure of 2 bar (200 kPa) greater than the intake pressure. It stands out for its excellent nominal rate of flow of up to 40 kg/h under the nominal circumstances.




GIRS12 injector rails are designed and tested to guarantee very high performance and precision delivering fuel. Small size makes them easily adaptable to fit the engine compartment, and they are particularly strong and silent.

They guarantee very good hold even under extreme conditions with a IP6K9K connector.

Its 4 sizes makes it suitable for the requirements of engines of different levels of performance and different sizes (2-3-4 cylinders).

Square Switch


Square Switch

Square electronic control unit; functions include:

  • gas/petrol switch and indicator of fuel in use with two leds 
  • display of the quantity of gas in the tank with 5 leds.

Switch with an adjustable buzzer that sounds under the following conditions: switch back to petrol due to low pressure, switch back to petrol due to diagnosis.

Filling valve


Filling valve

The filling valve is usually installed in the engine compartment, but can sometimes be positioned inside the petrol cap door.

It includes connection to the refuelling system and a manual ball valve that opens and shuts off gas supply.

Natural Gas tank


Natural Gas tank

CNG tanks store natural gas at a high pressure. They are cylindrical in shape, and can be installed both inside and outside the boot. They come in different diameters, sizes and capacities.

Depending on the legislation of the market for which they are intended, they come with additional safety devices, such as an excess flow valve (which shuts off or restricts gas leaks in the event of a broken pipe) or systems that releases gas externally upon reaching a specific temperature or pressure. Further safety devices include manual shut-off valves, automatic shut-off solenoid valves, rupture disks and non-return valves.


  • Version
  • Cylinders
  • 2 3 4 CYL
  • 5 6 8 CYL
  • ODB
  • Yes
  • Yes
  • ECU
  • OMEGAS DIRECT 1.0/3.0
  • Reducer
  • NG1
  • NG2
  • Rail
  • GI25/GIRS12
  • GI25/GIRS12
  • Switch
  • Round/Square
  • Round/Square

What makes it special?

Complying with the most strict emission standards

Ability to manage partial runs on petrol

OBDII connectivity on K and CAN protocols

Complete diagnostics of the gas system

Possible use of petrol

Range of optimised regulators based on power output

High-performance injector rail

Do you know how much you can save?

How many kilometres does your vehicle travel
per litre of fuel?

How many kilometres do you travel
per year?

Price Petrol/

Annual cost

Price LPG/

Annual cost
Annual savings Petrol: LPG

Price CNG/

Annual cost
Annual savings Petrol: CNG

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