CNG & LPG

LPG/CNG Auto gas apart from being easily available is very reasonably priced. So while we save our environment and our planet we are also saving on our fuel bills that too up to 50%-70%. Above all to clear your doubts on the performance of the car, with LPG/CNG, the car runs much smoother with only negligible power loss. LPG/CNG is very clean and pure form of fuel and cannot be adulterated. So the poisonous and the harmful gases emitted by the petrol driven cars are eliminated. It also has an anti knocking power and is even very efficient on mileage.


What is LPG?

LPG stands for Liquid Petroleum Gas. It is a by-product of the refining of crude oil, which has a gaseous state at room temperature and pressure. It is at a pressure of 2 Bar in its liquid state.

The LPG used to run motor vehicles is a mixture of propane gas and butane gas whose chemical and physical properties enable excellent vehicle performance in terms of power, engine agility and operation.

It burns without leaving the carbon residue in the engine that is responsible for premature wear; it increases the life of the spark plugs, valves and pistons and preserves the properties of the engine oil for much longer. Its combustion releases lesser amounts of carbon monoxide, nitrogen oxides and unburnt hydrocarbons than gasoline and diesel, and there is no production of aromatic hydrocarbons, sulphur dioxide and particulate.

What is Natural CNG Gas?

Methane or natural gas is the utmost in environmentally friendly fuels: one of the most plentiful in nature.

In fact, Natural Gas does not contain any impurities, sulphur, lead compounds or aromatic hydrocarbons, resulting in extremely low levels of exhaust pollution without odour, particulate and combustion residue.

The chemical composition of Natural Gas causes much less production of CO2 compared to other fuels; it also reduces the formation of ozone in the atmosphere.

What are the benefits of LPG

Firstly, there is the benefit in financial terms given the lower running costs of vehicles that run on LPG compared to cars running on gasoline.

LPG costs about half compared to gasoline so it is possible to redeem the cost of the system quickly and then start saving money, even if the distances covered are not very high. Secondly, there are the benefits for the environment.

LPG does not contain benzene or lead: the most harmful substances in other fuels, and particulate is not produced as a result of its combustion, one of the major causes of pollution in towns and cities.

Thanks to its environmentally friendly features, vehicles that run on LPG can be used even when motor vehicle transport is restricted because of high levels of atmospheric pollution, if contemplated by local regulations.

What are the benefits of Natural Gas?

Firstly, there is the benefit in financial terms given the lower running costs of vehicles that run on Natural Gas compared to cars running on gasoline.

Natural Gas costs about 70% less than gasoline so it is possible to redeem the cost of the system quickly and then start saving money, even if the distances covered are not very high.

Secondly, there are the benefits for the environment as Natural Gas does not contain benzene or lead: the most harmful substances in other fuels, and particulate is not produced as a result of its combustion, one of the major causes of pollution in towns and cities.

Thanks to its environmentally friendly features, vehicles that run on Natural Gas can be used even when motor vehicle transport is restricted because of high levels of atmospheric pollution, if contemplated by local regulations.

Maintenance of cars that run on gas

Vehicles converted to gas require the same type of maintenance as those running on gasoline. It is important to comply with the schedule of routine maintenance for the ignition. Special maintenance is not necessary, we recommend following the maintenance schedule especially as regards the ignition and the electrics.

Every 15,000 km, check that the electrics work correctly, that connections have not oxidised and replace the spark plugs. For LPG systems, have your installer check that there is no oil or other deposits inside the reduction gear every 30,000 km: these could be caused by the variable composition of LPG.

Are gas systems safe?

Products installed on vehicles in specialised car-workshops are homologated by the Ministry of Transport according to European standards.

All Landi Renzo products are also individually tested according to the demands of our quality system, which was certified to ISO 9001 in 1996 and to ISO TS 16949 in 2001: the latter is the Quality System used by the motor vehicle industry and has extremely severe quality standards.

Are LPG tanks safe?

The chemical-physical specifications of LPG have always been taken into consideration for the construction of tanks.

Inspections, tests and trials are very severe, as are the standards for the construction of these components, as well as the pipes, valves and the other elements that the system is made up of.

Just consider that the pressure developed by LPG inside the tank normally ranges between 3 to 10 bar, but tanks are homologated for pressures of 30 bar.

Again, during the homologation stage, the tanks are subjected to a hydraulic pressure test and must not explode before a pressure of 67.5 bar has been reached.

The tanks have a working life of 10 years from installation and they must be replaced after this. The new R67/01 standard came into force on January 1st 2002, and now all LPG systems must be fitted with an additional safety device: a safety valve with heat-tripping fuse installed on the tankÍs multi-valve, making modern systems even safer.

Are Natural Gas tanks safe?

Tanks for Natural Gas are able to guarantee the highest levels of safety: in fact, they are all subjected to stringent testing, both at the time of homologation and during their working life. The particular strength required to endure testing pressures of 300 bar and operating pressures of 220 bar means the cylinders are extremely resistant to impact.

The use of fully tested, extremely reliable components, the implementation of all methods during installation for the prevention of gas leaks, even in case of faulty operation, and the intrinsic properties of Natural Gas (high ignition temperature, ignition only possible inside a particular interval of mixing with air) are all factors that play an important role in favour of safety. Natural Gas is lighter than air and so does not stagnate in case of leaks but is dispersed into the atmosphere without accumulating in the lower strata.

Opinions are also positive on an international scale.

Tests made by the most important institutes for safety throughout the world (Bureau Veritas in Norway, EPA in the United States, etc.) on Natural Gas bottles have always given results that are more than gratifying, showing the reliability of this type of tank is excellent.

A report by the Norwegian Bureau Veritas states that the risks connected with the use of vehicles powered by Natural Gas are no greater than the risks for vehicles that run on diesel.