Purba Bharati Gas Pvt Ltd 

Compressed Natural Gas (CNG)

CNG - Reduced Environmental Impact

CNG engines run more quietly due to the higher octane rating of CNG over gasoline and they produce less exhaust emissions. Harmful emissions such as carbon monoxide (CO), carbon dioxide (CO2 and nitrous oxide (N2O) can be reduced by as much as 95% when compared to gasoline powered vehicles.

CNG contains no additives and burns cleanly leaving no by-products of combustion to contaminate your spark plugs and engine oil. CNG is almost two third the price of super gasoline, resulting in substantial savings in fuel costs.
CNG is lighter than air, hence in case of leakage CNG disperses quickly into the air instead of on the ground, reducing the risk of fire and ground contamination.

Do & Don't


Switch off engine while fuel filling.
 Apply Hand Brakes while fuel filling  Get the CNG cylinder checked every three (3) years from the date of last testing / retesting of cylinder by government authorized CNG cylinder testing agency.
Ensure installation/servicing of the CNG kit is done by authorized workshop Always keep the certificate of the CNG kit and the cylinder.
Always keep a portable fire extinguisher and a First Aid kit in the vehicle.


 LPG, propane or any other cylinder should not be used instead of a CNG cylinder.

 Do not start engine or board the vehicle while fuel filling.
 Avoid carrying inflammable material near the CNG cylinder.
 Never fill any gas other than CNG.
 Do not place any luggage or load over cylinder as it may damage the cylinder pipe, hose, valve etc.
 The CNG cylinder should not be repaired under any circumstances, in case of any problem, consult with authorized workshop.


Yes, it is absolutely safe as a gas. Being lighter than air, in case of a leak it rises up and disperses into the atmosphere. This property precisely makes it a safe fuel.
The conversion cost depends upon the type and make of the automobile and the conversion kit. Roughly the cost varies between Rs. 25,000 to Rs. 50,000.
Yes. You are provided with a switch on the dashboard of your car. So once you flip the switch, you can make the car operational on petrol or CNG alternatively.
The tank which has a storage capacity of 60 water liters can store up to 8 to 10 kilograms of CNG. A mid-sized car of about 1200cc can run up to 175 kms to 200 kms in one filling.
An electronic fuel management system is installed as part of the CNG conversion kit in your vehicle on the dashboard. This system will show you the CNG levels in your vehicle.
No. CNG does not have any known harmful effects on your vehicle. The absence of any lead content in CNG helps avoid lead fouling of plugs, thus enhancing plug life. Upon entering the engine in the form of a gas, CNG doesn’t disturb the presence of lubricating oil in the engine, and reduces chances of wear and tear. Further, it does not contaminate or dilute crankcase oil, giving a new lease of life to the engine.
Under the latest technology, a diesel car cannot run on dual fuel mode. A diesel vehicle can be converted to run on CNG, but the conversion cost is higher than the conversion of petrol vehicles.
As compared to alternative fuel, CNG emits lesser amount of Carbon dioxide and other pollutants. This helps to reduce the pollution & health related problems caused by automobile pollutants. Further, due to its low price as compared to its alternative fuel, with improved mileage, it helps to save more money. With the emergence of new sector i.e. Natural Gas, it has generated more opportunities in business as well as in terms of employment. Thus large-scale usage of CNG not only reduces pollution, but also helps development indirectly within the nation.