Do petrol engines have particulate filters? A few years ago none of them did. Particulate filters were an integral component of diesel engines, reducing environmental pollution. For a long time, manufacturers believed that since petrol engines don’t produce as many harmful contaminants as diesel engines do, they don’t need to be equipped with such filters.
In the past several years, the general opinion about the particulate filters for petrol engines has changed. Many companies have started introducing such filters for their products.
What Is A Particulate Filter?
The history of particulate filters began with DPF (diesel particulate filter). Such a filter captures and stores exhaust soot in order to reduce emissions from diesel engines. These filters have a certain capacity, which is why the captured exhaust soot needs to be emptied or burned out on a regular basis.
In 2009, Euro 5 Emission Standards made installing a particulate filter on diesel vehicles mandatory in order to lower CO2 emissions. EU climate policy has forced changes in gasoline direct injection technologies as well. In the fight to reduce CO2 emissions, manufacturers adapted their experience with DPF to equip petrol engines with particulate filters.
Particulate filters capture the ultrafine particles produced by gasoline direct injection (GDI) vehicles. Daimler introduced the first gasoline particulate filter (GPF) in 2014. The company equipped its Mercedes-Benz S500 with GPF.
In 2017, the EU6c emissions regulation set the maximum particulate number emissions at 6 x 1011 per km for all spark-ignition engines, thus making the particulate filters for GDI engines necessary.
As of September 2018, each new vehicle is subject to the particulate matter emissions test.
Why Do You Need A Particulate Filter?
The above EU regulations are aimed at reducing CO2 emissions produced by road vehicles. If you use petrol engines for other construction machinery, the rules don’t apply. However, the regulations are likely to be extended to non-road petrol engines in the coming years.
In 2018, many market leaders in car manufacturing, such as Volkswagen and BMW are equipping their petrol engines with particulate filters. It’s likely that other petrol engine manufacturers will follow shortly.
The average cost of a gasoline particulate filter is about £25, so equipping engines with filters doesn’t warrant a substantial price increase for the manufacturers and consumers.
With time, GPFs may also be adopted for port fuel injected (PFI) engines as well, even though PFI vehicles aren’t subject to the particulate matter emission standards.
How Do You Tell If Your Petrol Engine Has A Particulate Filter?
If you purchase a petrol engine for construction equipment, it’s probably not equipped with a particulate filter. With time, small petrol engines may also come equipped with such filters. However, at the moment, these filters are mostly used for passenger cars.
At Key Services, we are closely following EU CO2 emissions regulations and requirements. As soon as the rules start being applicable to the products we sell, we’ll ensure a proper selection for our clients. For more information about our products, please download the free Guide To Replacement Petrol Engines.