Uk its called ppf petrol particulate filter as apposed to our cousins GPF Gas particulate filter. We live & learn.
What Is a Petrol Particulate Filter?
Similar to a DPF, a petrol particulate filter (PPF) prevents harmful particulate emissions. It is fitted in the exhaust system and captures soot particulates in direct-injection petrol engines. The filter is structured like a honeycomb and it is created from synthetic ceramic material. As the exhaust gas passes through the exhaust system into the filter, the soot particulates are trapped.
There is one main difference between a DPF and a PPF; a diesel filter has a larger capacity than a petrol filter, as it can hold up to 8g of soot in it and a petrol filter can only hold around 1g of soot. However, if we consider how many particulates each engine emits, a petrol engine releases 30 times fewer particulates.