The CNG reducer is a key component of a natural gas (CNG) installation in a vehicle. It is like a 'pressure regulator' that reduces the gas pressure from the tank to a level suitable for the engine's needs.
Working principle of the CNG regulator in a car's gas system
Gas intake: The regulator draws gas from the CNG tank, where the pressure can reach 200-300 bar.
Pressure reduction: Gradual reduction of the gas pressure to the working level, e.g. 2-3 bar.
Gas filtering: Cleansing the gas of impurities before it is fed to the engine.
Gas heating: On some regulator models, the gas is heated to improve evaporation and facilitate combustion.
Gas supply to the engine: The reducer delivers the gas to the gas injectors, which dispense the gas into the intake manifold or directly into the cylinders.
Types of CNG regulators
Diaphragm regulators: The most common type, used in most CNG installations.
Piston reducers: Less common, but offer greater precision in pressure regulation.
Popular CNG regulator brands
Tomasetto AT/NG
BRC CNG
Atiker CNG
Landi Renzo CNG
Advantages of CNG regulators
Stable gas pressure: Provide constant gas pressure, resulting in smooth engine operation.
High efficiency: Efficient depressurisation and gas filtration.
Long life: Made of durable materials and resistant to wear.
Important notes
The reducer should be matched to the engine power and type of CNG system.
Have the reducer fitted and adjusted by a qualified CNG installer.
Regular service of the reducer (every 10,000-20,000 km) ensures its correct operation and extends its service life.
