Today we will talk about the fuel type K5 and its differences from K2.
First of all, what is Ecological class K2 and K5?
This concept was established by the Technical Regulations of the Customs Union of the Customs Union No. 013/2011 “On the requirements for automobile and aviation gasoline, diesel and marine fuel, jet fuel and fuel oil.”
The differences between these fuel classes are in physico-chemical indicators that determine the level of negative impact of exhaust gases on the environment. And the higher the class (K5), the safer for nature the fuel.
There is also 50 times less sulfur.
The fuel requirements for the ecological class K5 stipulate that the sulfur content in its composition will be 50 times (!) less than in the fuel type K2. The standard sulfur content in fuel class K2 should not exceed 500 mg per 1 kg, while in the K5 class the maximum sulfur content is not more than 10 mg in 1 kg.
When the fuel burns, sulfur oxidizes, sulfuric and sulfuric acids are formed. These acids adversely affect the operation of the power unit of the engine in vehicles. Modern engines have an aluminum block of cylinders, which is quite fastidious of such effects. As a result, the engine resource is reduced. In addition, catalysts and exhaust systems quickly fail, which subsequently requires additional costs.
There is no more that 1 percent of benzol
In class K5 fuel type there is a significant reduction in the volume of benzol – from 5 to 1 percent. Benzol is very toxic and its limitation in gasoline (not more than 1 percent by volume) is essentially the only restriction on the component composition of motor fuel. With an increase in the content of aromatic hydrocarbons (more than 35-45 percent), carbon formation, as a consequence, a violation of the combustion process and surface ignition occurs.
Reduction of aromatic hydrocarbons in gasoline leads to a decrease in the content of toxic products in the exhaust gases.
No to the dangerous octane-boosting additive
Modern fuel is difficult to imagine without various additives that improve the properties of the product. Production of fuel of ecological class K5 completely abandons the highly toxic octane-increasing additive - monomethylaniline (MMA). The additive is designed to increase the detonation resistance of automotive gasolines.
MMA is one of the most harmful substances for the environment. MMA has standard toxic effects: as a blood and nerve poison, it causes poisoning when inhaled or even through intact skin.
The substance is not fugacious, after the exhaust is out the vehicle it lays above the ground at a level of 40 - 60 cm.
In addition, at high dosages, MMA increases the propensity of the fuel to form deposits in the engine intake system.