The need to reduce emissions of harmful substances from the combustion of petroleum derivatives has forced fuel manufacturers to find alternatives. As a result, bio-components are increasingly appearing in our fuels. Their use means lower emissions of particulate matter and toxic gases, but also a new challenge for designers of propulsion systems and exhaust gas after-treatment systems.
Is it safe to use biodiesel?
Biodiesel is a biofuel that is produced from natural sources such as plants, organic waste and animal fats. In Europe, the most common variety of biodiesel is a blend with an admixture of rapeseed oil, or soybean oil. Unlike traditional diesel, which is made from crude oil, biodiesel is greener and more environmentally friendly.
Fuels of this type undoubtedly have many advantages, starting with a reduction in the production of carbon dioxide, sulphur oxides, nitrogen oxides, PM10, PM2.5. The production of biofuels also has a positive impact on the condition of the national economy and agriculture. Unfortunately, the new type of fuel poses new challenges for the automotive industry.
It appears that the use of biodiesel can affect the durability of DPFs. Biodiesel tends to form oily deposits and generates increased soot production. These deposits can clog DPFs, causing premature wear or irreversible damage.
For this reason, engine and DPF manufacturers have adopted a solution for engines that has been specifically designed for biodiesel – the so-called post-injection – a system that injects additional fuel when the exhaust valves are open. The fuel ignites in the hot exhaust system, burning off any residue and cleaning the filter in the process. This solution also has its weaknesses, contributing to higher fuel consumption and deterioration of the oil quality (loss of lubricating properties) by diluting it with fuel dripping into the oil pan.
It is important to perform DPF regeneration on a regular basis to avoid premature wear and to ensure that the filters are functioning properly. If you have any problems with your DPF, it is always advisable to contact a professional car mechanic, who will be able to help diagnose and repair the problems.
The DPF should be repaired as soon as possible.
Despite the many complications caused by the introduction of biofuels, the development of this type of fuel will continue to grow due to stringent environmental standards. This will require modifications to the composition of the oil bases, using advanced additives to adapt them to operate in the most extreme conditions.
The development of biofuels will continue to be a challenge.