Gpf - t5

[simonjedrake]

Originally Posted by Woody3537

Hi Im new the the forum, but I am looking at a 2018 XC60 T5 Momentum, Do we know if this would be fitted with a GPF or not?

From what I have tried to find out out there on the internet there is not a definitive answer (that I can find anyway). It I moved from diesels due to the DPF issues and I just don't want the same again. I only do 25 miles a day commute (12 ish there then back home again).

This has killed a few DPF's in the past at great expense to my pocket.

Thanks for your help

The T5 does have a GPF fitted which just does what it's needed whenever its needed.

[lalith16]

The below section relates to Petrol Particle Filter and is copied from the Volvo’s Owner’s Manual IOS app for XC60 MY19:

Petrol particle filter

Petrol cars are fitted with particle filters for more efficient emission control.

Particles in the exhaust gases are collected in the petrol particle filter during normal driving. In normal driving conditions, passive regeneration takes place, which leads to the particles being oxidised and burned away. The filter is emptied in this way.

If the car is driven at low speed or with repeated cold starts in low outside temperature, active regeneration may be necessary. Regeneration of the particulate filter is automatic and normally takes 10-20 minutes. There may be a smell of burning during regeneration.

Use the parking heater in cold weather - the engine then reaches normal operating temperature more quickly.

When driving short distances at low speeds in a petrol car

The capacity of the petrol emission control system is affected by how the car is driven. It is important to drive varying distances at different speeds to achieve optimal performance.

Driving short distances at low speeds (or in cold climates) frequently, where the engine does not reach normal operating temperature, can lead to problems that can eventually cause a malfunction and trigger a warning message. If the vehicle is mostly driven in city traffic, it is important to regularly drive at higher speeds to allow the petrol emission control system to regenerate.

The car should be driven on A-roads at speeds in excess of 60 km/h (38 mph) for at least 20 minutes between each refuelling.

[S5Warrior]

Originally Posted by lalith16

The car should be driven on A-roads at speeds in excess of 60 km/h (38 mph) for at least 20 minutes between each refuelling.

Suppose this will do then A686 Alston to Penrith

[ovlov04v]

Mmm.
That Volvo extract doesn't conform to my understanding of how the GPF works which is different from the DPF. That extract looks like a simple copy of the guidance for DPF.
In order for a GPF filter to burn off the soot, deceleration must occur. Foot off, no throttle. This then stops the fuel injection and increases the airflow (inc oxygen) going through the engine and the exhaust system. The temperature of the petrol filter will increase enough to ignite the trapped particulate matter and burn it off.
However, in situations when deceleration is not possible, the system that controls a typical GDI engine switches to a lean burn thus allowing more oxygen to be available and regeneration can be initiated.
Petrol engine exhaust temps generally will warm up much more quickly than diesel and anyway run at higher temp. So the impact of short journeys on a GPF would be markedly different to a DPF.

[key76]

I am coming to the T5 S90 after 10+ years of diesel ownership. One of the reasons I wanted out of diesel was the hassle of the DPF as I would end up having to put a bunch of miles on regularly just to ensure it was cleaned when I did a lot of local driving.

I didn't realise the S90 had a GPF until after I ordered it.

I gather they works slightly differently, but not sure whether I need to exercise the same caution I did with a DPF.

My daily commute is 15 miles each way. Maybe 10 miles of that is normal driving where i get up to 30 and 40mph, but 5 miles or so of it are standstill and crawling traffic.

Weekends depend on what we are doing as to whether it will get a decent run.

So based purely on my commute, would do people think I should be taking it out for a deliberate run? We live 5 miles from a major motorway, so can easily give it a good blast along the road, but I begrudge wasting miles on the car and fuel to do so.

[ovlov04v]

As outlined in my first post above I would say you shouldnt be concerned. The operating conditions of a GPF are very different to a DPF. Have a check with Gertie Google and you can find plenty of articles on how they work.
Basically the management systems will monitor soot levels and then when required will increase the temp to burn off the soot. It does this by increasing the amount of oxygen. This is usuaaly acheived during no power conditions ( foot off throttle ). If this is not enough then lean burn is initiated.
In your case the systems should be up to temp and be doing these passive regens as part of your routine trips.
Never a bad idea to stretch the legs regularly but shouldnt need to be an essential and 'wasted' GPF trip.

hth

[key76]

Thanks ovlov04v

Appreciate it.