Particulate filters on petrol cars now

Elessar

So I see that particulate filters are making their way to petrol engines now - I saw a review of the UP GTI which says that has it, which led me to do a bit of research and both Mercedes and VW are fitting them to their petrol cars now. Have to say I was a bit taken back. I'm all for less pollution but will these start causing the same issues as DPFs for low mileage drivers?

biko

That was news to me so had a google, apparently they are called Gasoline Particulate Filter (GPF)

NIMAN

I remember a sales man telling me a few years ago that some brands were already fitting them.

morritty

Elessar wrote: »

So I see that particulate filters are making their way to petrol engines now - I saw a review of the UP GTI which says that has it, which led me to do a bit of research and both Mercedes and VW are fitting them to their petrol cars now. Have to say I was a bit taken back. I'm all for less pollution but will these start causing the same issues as DPFs for low mileage drivers?

Seems they should be ok in town driving. But i guess take with a pinch of salt.

greencarguide.co.uk wrote:

We hope that all manufacturers will see sense and fit GPF as standard. Each filter costs around £25, requires no maintenance, doesn’t increase fuel consumption and is simpler than a DPF because it won’t clog up in urban running as the exhaust from a petrol engine is hot enough to allow the filter to clean itself without any extra help

Elessar

Elessar wrote: »

So I see that particulate filters are making their way to petrol engines now - I saw a review of the UP GTI which says that has it, which led me to do a bit of research and both Mercedes and VW are fitting them to their petrol cars now. Have to say I was a bit taken back. I'm all for less pollution but will these start causing the same issues as DPFs for low mileage drivers?

when DPFs came our first they were giving issues for drivers doing short, slow journies (not low mileage drivers as you could be low mileage but do it all on a motorway).

That was quite a few years ago now and DPFs have been improved considerably and don't really have much issues anymore regardless of driving. There is a serious scaremongering though still in this forum mostly based of cars from 7 or 8 years ago.

zilog_jones

They introduced particulate matter (PM) limits for direct injection petrol cars with Euro 5 emissions standards (2009), and have been getting stricter. It's more of a problem for direct injection petrol engines as they produce more PM than traditional indirect injection, and direct injection is becoming more commonplace. However, they still produce less soot than diesel so I'd imagine filters getting clogged would be less of an issue.

Aren't exhaust temperatures with petrol generally higher than diesel? Maybe I'm mis-remembering, but that would help too if it is the case.