Why choose CNG or LPG
Which type of fuel is?
LPG
LPG is the international acronym for liquefied petroleum gas. It is a crude refining product and a natural gas coming from the oilfields. It has a complex composition but it is mainly made up by propane and butane.
LPG is the international acronym for liquefied petroleum gas. It is a crude refining product and a natural gas coming from the oilfields. It has a complex composition but it is mainly made up by propane and butane.
CNG
CNG (compressed natural gas) is the methane, the hydrocarbon of which the mix called natural gas is almost entirely composed by.
CNG (compressed natural gas) is the methane, the hydrocarbon of which the mix called natural gas is almost entirely composed by.
Which are the characteristics of vehicles supply?
LPG
LPG gives vehicles excellent performances in terms of power, flexibility and engine good working, as well as it maintains the same engine oil properties for longer.
LPG gives vehicles excellent performances in terms of power, flexibility and engine good working, as well as it maintains the same engine oil properties for longer.
CNG
CNG is an excellent fuel for controlled ignition engines, allowing to achieve great performances, low consumptions, very low polluting emissions and almost complete absence of carbon residuals into the engine. Thanks to its molecular structure, it can increase the energetic efficiency while reducing consumptions very much.
CNG is an excellent fuel for controlled ignition engines, allowing to achieve great performances, low consumptions, very low polluting emissions and almost complete absence of carbon residuals into the engine. Thanks to its molecular structure, it can increase the energetic efficiency while reducing consumptions very much.
Which are the environmental benefits?
LPG
In case of petrol and gas oil vehicles, it is widely accepted that the main polluting elements are carbon oxides, nitrogen oxides and particulates (microscopic particles containing a chemical elements mix – just for diesel oil engine), which still are a big problem to resolve. LPG has carbon and nitrogen oxides emissions much lower than the petrol engine ones and pollutes roughly a 90% less than any diesel oil vehicle for what concerns nitrogen oxides and particulates. With LPG systems, co2 (carbon dioxide) emissions are reduced by 10%.
In case of petrol and gas oil vehicles, it is widely accepted that the main polluting elements are carbon oxides, nitrogen oxides and particulates (microscopic particles containing a chemical elements mix – just for diesel oil engine), which still are a big problem to resolve. LPG has carbon and nitrogen oxides emissions much lower than the petrol engine ones and pollutes roughly a 90% less than any diesel oil vehicle for what concerns nitrogen oxides and particulates. With LPG systems, co2 (carbon dioxide) emissions are reduced by 10%.
CNG
In case of petrol and gas oil vehicles, it is widely accepted that the main polluting elements are carbon oxides, nitrogen oxides and particulates (microscopic particles containing a chemical elements mix – just for diesel oil engine), which still are a big problem to resolve. With CNG systems, CO2 (carbon dioxide) emissions are reduced by 20% and particulate matter (PM10), main cause of air pollution, is zero.
In case of petrol and gas oil vehicles, it is widely accepted that the main polluting elements are carbon oxides, nitrogen oxides and particulates (microscopic particles containing a chemical elements mix – just for diesel oil engine), which still are a big problem to resolve. With CNG systems, CO2 (carbon dioxide) emissions are reduced by 20% and particulate matter (PM10), main cause of air pollution, is zero.
How much can I save?
LPG
Assumed that 1 litre of LPG costs 50% less than 1 litre of petrol and lpg consumptions are about 20% more than petrol ones, it can be said that with a LPG converted vehicle you can have about 40% fuel savings compared to original petrol supply.
Assumed that 1 litre of LPG costs 50% less than 1 litre of petrol and lpg consumptions are about 20% more than petrol ones, it can be said that with a LPG converted vehicle you can have about 40% fuel savings compared to original petrol supply.
CNG
How much it costs approximately?
LPG
LPG supplied by filling stations is measured in litres. 1 litre of LPG costs approximately 50% less than 1 litre of petrol.
LPG supplied by filling stations is measured in litres. 1 litre of LPG costs approximately 50% less than 1 litre of petrol.
CNG
CNG supplied by filling stations is measured in kilogrammes. 1 kg of CNG (year 2018) costs approximately 0,99 euro/kg and corresponds to about 1,5 litres of petrol. In short, the use of CNG offers considerable economic advantages.
CNG supplied by filling stations is measured in kilogrammes. 1 kg of CNG (year 2018) costs approximately 0,99 euro/kg and corresponds to about 1,5 litres of petrol. In short, the use of CNG offers considerable economic advantages.
What is the range of vehicles?
LPG
This should be calculated on a case-by-case basis, starting from the dimension of tank, that is subject to 80% filling limitation for safety reasons, as per law requirements. By way of example, a 60 l tank can effectively stock 48 l of LPG. Assuming to average 10 km to the LPG litre (roughly equivalent to 12 km per petrol litre), the range should be at around 480 km.
This should be calculated on a case-by-case basis, starting from the dimension of tank, that is subject to 80% filling limitation for safety reasons, as per law requirements. By way of example, a 60 l tank can effectively stock 48 l of LPG. Assuming to average 10 km to the LPG litre (roughly equivalent to 12 km per petrol litre), the range should be at around 480 km.
CNG
The total capacity (in litres) of cylinders installed divided by four gives with good approximation the equivalent CNG cubic metres contained into the tank. For example, a 80 lt cylinder contains about 20 cubic meters of CNG. Assuming to average 14 km to the CNG cubic metre (roughly equivalent to 12,5 km per petrol litre), the range should be at around 280 km.
The total capacity (in litres) of cylinders installed divided by four gives with good approximation the equivalent CNG cubic metres contained into the tank. For example, a 80 lt cylinder contains about 20 cubic meters of CNG. Assuming to average 14 km to the CNG cubic metre (roughly equivalent to 12,5 km per petrol litre), the range should be at around 280 km.
How does consumption change using LPG?
LPG
It is in the nature of LPG to have a specific energy lower than the petrol one; consumption is approximately 20% increased.
It is in the nature of LPG to have a specific energy lower than the petrol one; consumption is approximately 20% increased.
CNG
Why can the vehicle range change from a filling to another?
LPG
Different driving conditions and, sometimes, different lpg chemical composition can influence consumptions very much. It is therefore important to compare consumptions all conditions being equal.
Different driving conditions and, sometimes, different lpg chemical composition can influence consumptions very much. It is therefore important to compare consumptions all conditions being equal.
CNG
The difference between two different fillings depends on both driving style and quantity of fuel supplied. The engine efficiency and the atmospheric conditions (air pressure and humidity) influence the engine performances too. Being CNG not liquid, the fuel quantity supplied is not only a matter of tank volume (capacity of cylinders in litres) but also of pressure and temperature achieved at the end of filling; so, fuel quantity supplied can slightly change every time (the same happens in case of liquid fuels, but in a less sensible way). The quantity supplied also depends on gas features.
The difference between two different fillings depends on both driving style and quantity of fuel supplied. The engine efficiency and the atmospheric conditions (air pressure and humidity) influence the engine performances too. Being CNG not liquid, the fuel quantity supplied is not only a matter of tank volume (capacity of cylinders in litres) but also of pressure and temperature achieved at the end of filling; so, fuel quantity supplied can slightly change every time (the same happens in case of liquid fuels, but in a less sensible way). The quantity supplied also depends on gas features.
Which vehicles can be converted?
LPG
Zavoli equipment provides approved LPG supply systems consistent with most of todays’ car engines on the market, so that you can convert to lpg almost all petrol vehicles (both the carburettor and the injection or supercharged ones) without incurring any technical problem. Ask anyway a brc installer for checking in details your engine and providing more specific information.
Zavoli equipment provides approved LPG supply systems consistent with most of todays’ car engines on the market, so that you can convert to lpg almost all petrol vehicles (both the carburettor and the injection or supercharged ones) without incurring any technical problem. Ask anyway a brc installer for checking in details your engine and providing more specific information.
CNG
Zavoli equipment provides approved cng supply systems consistent with most of todays’ car engines on the market, so that you can convert to CNG almost all petrol vehicles (both the carburettor and the injection or supercharged ones) without incurring any technical problem. Ask anyway a Zavoli installer for checking in details your engine and providing more specific information.
Zavoli equipment provides approved cng supply systems consistent with most of todays’ car engines on the market, so that you can convert to CNG almost all petrol vehicles (both the carburettor and the injection or supercharged ones) without incurring any technical problem. Ask anyway a Zavoli installer for checking in details your engine and providing more specific information.
How big is the power loss of a converted engine?
LPG
In case of the most advanced systems (BRC sequent sequential multipoint gas injection), the difference in performances driving the car is imperceptible (approx 2-3 % power loss).
In case of the most advanced systems (BRC sequent sequential multipoint gas injection), the difference in performances driving the car is imperceptible (approx 2-3 % power loss).
CNG
In case of the most advanced systems (BORA sequential multipoint gas injection), the difference in performances driving the car is almost imperceptible (approx 2-3 % power loss).
In case of the most advanced systems (BORA sequential multipoint gas injection), the difference in performances driving the car is almost imperceptible (approx 2-3 % power loss).
Can I park the car anywhere?
LPG
In italy, LPG vehicles can be parked in the above-ground lots and in the first basement of underground multi-level garages, thanks to the safety level achieved by modern conversion systems and required by regulation ece/onu 67-01 and lgs. Decree nov 22th 2002 of ministry of interior. Please check the related laws in force in your country.
In italy, LPG vehicles can be parked in the above-ground lots and in the first basement of underground multi-level garages, thanks to the safety level achieved by modern conversion systems and required by regulation ece/onu 67-01 and lgs. Decree nov 22th 2002 of ministry of interior. Please check the related laws in force in your country.
CNG
In italy, CNG vehicles are not subject to any restriction concerning underground parking.
In italy, CNG vehicles are not subject to any restriction concerning underground parking.
What level of safety have the Zavoli gas systems reached?
All Zavoli products are the result of years of research, experimentation and development processes. The quality insurance and management system specifically planned and applied assures the compliance of manufacturing processes to regulations uni en iso 9001:2000 and iso ts 16949:2009. Gas systems complies with european and national laws in force (r67-01, r110, dgm, …) As well as ce regulations and norms concerning polluting emissions (euro iii, euroiv, eurov and eurovi) and electromagnetic compatibility.