Is CNG safe?
Absolutely. There are over 3 million vehicles running on CNG which proves the fact.
- CNG is lighter than air which makes it further safe to use. In case of a leak it rises up and disperses into the atmosphere.
- High auto-ignition temperature of 540 degrees centigrade as against petrol’s 360 degrees centigrade makes it a safe fuel.
- CNG has narrow Flammability range, if CNG’s concentration in the air is less than 5% and more than 15%, the gas will not burn even in the presence of a spark.
I have a petrol car, can I install a CNG kit? Will my car continue running on petrol too?
Yes, all spark-ignited engines can be converted to CNG, but a specially designed conversion kit is required for the purpose. The kit consists of a cylinder to be fixed in the boot of the car and other equipments to allow gas flow into the engine. After conversion to CNG, the vehicle can also run on petrol (depending upon the model of the car) whenever desired simply by flicking a switch on the dashboard.
Is it too expensive to convert a vehicle to CNG-friendly?
It is not very expensive. Moreover the cost of CNG is comparatively much less than Petrol which makes it more useful and beneficial. The cost of converting a vehicle to CNG depends on its type and make.
The fuel bill on the basis of average running of vehicle is reduced by 50 percent approximately after conversion of CNG at the present price of CNG & Petrol.
Are cylinder used for filling CNG safe?
Cylinders used for storing gas are designed with very high safety factor in accordance with global standards. CNG cylinders are specially designed and manufactured. All cylinders are required to pass the specific requirements and are vigorously tested before use, in accordance with international specifications and standards, and they are duly approved by Chief Controller of Explosives.CNG cylinders are designed and built in such a way so as to withstand high pressure. The maximum pressure in a CNG cylinder is up to 200 bar Moreover, these cylinders are provided with a 'safety burst disc' such that in case of inadvertent high-pressure/high temperature at the time of filling or at any other time, this disc is ruptured and pressure is released.
CNG cylinders are designed and built in such a way so as to withstand high pressure. The maximum pressure in a CNG cylinder is up to 200 kg/cm2 (g) (about 2840 psi (g).
CNG cylinders are specially designed and manufactured. All cylinders are required to pass the specific requirements and are vigorously tested before use, in accordance with international specifications and standards and they are duly approved by Chief Controller of Explosives.
I have installed the CNG kit in my car. When should I do the servicing?
CNG kits are designed to give years of trouble free operation. However, like any other motor part, it does require servicing. It is advised to have routine services. As per Gas Cylinder Rules, 1981, the cylinder should under go hydro-stretch testing every 5 years to check pressure tolerance.
I have some reservation about installing CNG kit. Does CNG have any harmful effect on the engine?
You should not. Owing to CNG's distinct features, it does not contaminate or dilute crankcase oil, giving a new lease of life to the engine. The absence of any lead content in CNG helps avoid lead fouling of plugs, thereby enhancing plug life. One of the important benefits of CNG is that upon entering the engine in the form of a gas (and not as a spray or mist like other fuels), it doesn't disturb the presence of lubricating oil in the engine, and reduces chances of wear and tear. So you can happily have a CNG kit installed in your car to enjoy the benefits.
Is CNG popular worldwide?
Yes. CNG has many benefits and it is good for the environment. CNG or Natural gas as a vehicle fuel has a long and established record in Europe, Canada, India, New Zealand, Australia and in USA. Other countries such as Japan, Mexico, Malaysia, Pakistan, and Bangladesh are recognizing the benefits of CNG and plan to expand its use.
I have a LPG kit installed in my car, can I use CNG?
No, an LPG-fuelled vehicle will not run on CNG as the two fuels are different from each other, have differing calorific values and need different air-fuel ratios for combustion. CNG has to be stored at relatively higher pressure as compared to LPG, so the same cylinder cannot be used for both gases. A vehicle will need specific CNG conversion for CNG operation.