So what exactly is CNG?

May 26, 2019


Compressed Natural Gas or CNG as it is more commonly referred to is made from the same natural gas that is used in homes for heating and cooking. By compressing this natural gas, it can be used to fuel CNG vehicles. Due to the ever increasing world demand for petrol, together with increasing pressure to use cleaner fuel sources and reduce carbon emissions, CNG has aquired a primary role amongst all sources of energy.

Benefits Of Using CNG

CNG offers many benefits over other fuels. Firstly it has a low environmental impact and is easily extracted worldwide. Also large reservoirs are available as a ready to use. It is an excellent fuel for vehicles and it performs excellently with low emissions and almost no carbon residuals; moreover it definitely quiets engines. In short, it is an excellent alternative option to petrol.

Fuelling up tanks is easy and safe
Worldwide standardized charge valve NGV1 – NGV2
Supply of natural gas through existing underground pipelines, no need for large tanks

Low Environmental Impact Of CNG

Natural gas is an environmentally-friendly source of energy because its combustion produces mostly water vapour and carbon dioxide:
Reduction of carbon dioxide emissions by 20-30% vs petrol-powered engines
Reduction of nitrogen oxide emissions (NOx=NO2+NO) by 95% vs diesel-powered engines
Reduction of benzene emissions by 97-100% vs petrol or diesel-powered engines
Reduction of sulphur emissions by 50% vs dieselpowered engines

Powders and sulphur-containing products are virtually absent from NG combustion.

Reduction Of Fuel Cost

Given the current price scheme, the economic savings achievable with natural gas are about 60% vs oil and diesel for the same distance travelled. In addition, natural gas features the highest ratio between energy delivery and quantity of released carbon dioxide of all fossil fuels; therefore, its contribution to global warming is less. Combustion of one cubic meter of natural gas delivers about 38 MJ (10.6 kWh) of energy.

Cost Savings Example

The following example looks at the running costs of a Fiat Grande Punto based on 20,000 miles.
GRANDE PUNTO PETROL 5.9 L (per 100Km)     €1.4 (per litre)   €2,478 (total fuel cost)
GRANDE PUNTO DIESEL 4.5 L (per 100Km)    €1.2 (per litre)   €1,620 (total fuel cost)
GRANDE PUNTO CNG 5.7 L (per 100Km)    €0.75 (per litre)   €1,282 (total fuel cost)

Therefore not only is CNG more environmentally friendly but it can also save you a substantial amount of money when compared to both diesel and petrol. Given the current financial turmoil that exists within many of the worlds major financial markets, together with increasing costs, all businesses should be looking at ways in which they can actually reduce costs. Based on the above example, it is clear to see that CNG can offer businesses a way of reducing their fuel costs.