What is comptressed natural gas (CNG) ?
Compressed natural gas, also known as CNG, is an interesting alternative to traditional fuels, such as petrol and diesel. This natural gas, which comes from the distribution network and is also used for cooking and heating, is pressurised before it is injected into the fuel tank of the vehicle. This tank is incorporated into the chassis of the vehicle, next to a petrol tank. These bi-fuel vehicles offer an autonomy and driving comfort comparable to vehicles on traditional fuels.
In most cases, the price of CNG is lower than one of the other fuels. The price of CNG has shown stability for a long time. Financial incentives are also provided, which are intended to promote the purchase of CNG vehicles. For example, the KVBG premiums during the Motor Show. To support green mobility, the government has also implemented tax benefits related to the car registration tax and the annual road tax. Finally, natural gas is a widely available commodity, which is a serious alternative to petroleum and which lowers our dependency on petroleum producers, which is a considerable benefit with respect to the diversification of energy sources.
Air pollution by particulate matter increases the risk of cardiovascular illnesses. CNG vehicles emits practically no particulate matter (-95%). NOx, partially responsible for respiratory illnesses and smog alarm are decreased by 90%. The CO2 emissions are 27% lower compared to a petrol vehicle and 12% compared to diesel. CNG vehicles are also quieter. The method for supplying CNG fuel stations is more environmentally friendly, because it is done via the natural gas network and not by trucks.
The manufacturers apply the strictest standards in the manufacture of the vehicles and the gas tanks meet all the safety requirements. Methane has the characteristic of being lighter than air and therefore evaporates in the event of a leak. Access to underground parking is therefore not prohibited for these vehicles. This technology has existed since the 1930s and has therefore proven its worth.
CNG should not be confused with LPG (Liquified Petroleum Gas), a currently better-known fuel, which is a by-product of oil and therefore does not offer the same environmental benefits as CNG.