At the rate we are raising prices of petrol and diesel, every day more people considering converting their petrol engines using CNG fuel (Gas Compressed Natural) or LPG (Liquefied Petroleum Gas). CNG and LPG are fuels used in various parts of the world for over 60 years. Today there are thousands and thousands of cars converted from petrol to CNG or LPG in the U.S., Canada, Italy, Russia, Argentina, Venezuela, India, and other countries.
The conversion is easy, but the concerns rose by users and mechanics outdated scary when making the decision. Many believe that:
The gas forms deposits in the combustion chamber and exhaust.
The dry gas pistons.
The gas causes more engine wear.
The use of gas allows the use of inexpensive oil.
Once converted to gas, the engine has to be repaired more often.
While it is true that there is little loss of strength, this loss is similar to loss of strength to operate the air conditioning or opening a window at 80 miles per hours on the road. All these myths are completely false. Then we will see which the root cause is of and how to avoid these problems. From the outset, we must understand that an engine should never be spoiled converted to gas. If the engine has no compression, if it lacks the thermostat, if the water radiator is without Coolant / Anti-Corrosive, or if the fan is not working well, not be improved with the conversion to gas. There are many taxi drivers arriving to workshops for conversion, and refuse to install thermostats, changing spark plugs or make repairs that it requires the vehicle. You cannot expect good results in poor engine. If the mechanic recommends no repair parts in disrepair, change of spark plugs, Installation of thermostat or other component that is in poor condition, is a mechanic who does not aware and the conversion will not be satisfactory. The burning of gas is more complete, occurs at higher temperatures, and for being cleaner than burning petrol, oil does not stain as much as petrol does, or contaminate the atmosphere by exhaust gases. But this cleaning depends greatly on the temperature of the combustion. When the engine is running too cold, white or yellow deposits form in the cylinders, pistons, valves and exhaust. Every day cars to gas gathering with the exhaust yellow. These deposits are oil nitration. This indicates operating an engine without a thermostat or cheap oil to form deposits and shortening engine life and oil. If we operate the engine with the correct thermostat, the fan correct, the refrigerant cool, we can maintain the temperature in the range correct for that engine, and we can walk 10 to 15 years without touch the motor. Note: An exhaust pipe is yellow a symptom of cold combustion, improper mixture of air and gas oil, poor quality, inadequate spark, or a combination of these problems. Maintenance proactive dictates that we must correct the problem or oil temperature before allowing the accumulation of deposits in the combustion chamber.
A good system will have a heating gas circuit through the water hot radiator to maintain the pressures and temperatures required for a good combustion and better economy. If there is no thermostat, hot water will not gas heating system, reducing power, efficiency and economy of the conversion.
The course actually respected engine deposits are formed by the nitration and carbonaceous deposits lack of "normal" in the eyes of the mechanic. The mechanics are used to seeing wet deposits formed by gas-saturated coal. At the gas is not liquid at temperatures temperature, does not wet the few deposits forming or existed. The only deposits should see are the residues of organo-metallic additives used in the oil. These deposits are oil is minimized when the last generation and not wear engine cause burning of the oil. Among the thousands of cars converted to gas the world, there is no evidence more frequent corrections in engines converted to gas than petrol engines. Actually wear, all else being equal, is lower so that there is no possibility of dilution of the fuel oil or petrol leaks settled by spark plugs not work.