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GPF regeneration happens "passively" due to much higher exhaust temperatures in gasoline (petrol) vehicles coupled with excess oxygen during decelerations. The soot accumulated is very low so that such intermediate regen events are sufficient to oxidize soot. Of course, active regens may still be needed for some cases.
Commented May 6, 2022 on Emissions Analytics study shows GPFs make a big difference at Green Car Congress
Emissions Analytics study shows GPFs make a big difference
A recent study by leading UK-based independent emissions testing company Emissions Analytics tested four apparently similar pairs of gasoline-fueled vehicles between the US (without gasoline particulate filters (GPFs)) and Europe (with GPFs). The US vehicles were tested in Michigan, and the Euro...
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