DPF Regens and Fuel Use

lordrobs

lordrobs

lordrobs

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So it looks like I'll be getting a 2013 Insignia 1.9 CDTi "EcoFlex" :rolleyes: at the end of April to replace the complete dog that I've been given as a company car.

Aside from the issue that A) it is an Insignia and B) some fool specced it without parking sensors the car has been doing a lot of forced regens. Yesterday the current driver of it was on the phone to us and said it was doing a regen despite having been driven 260 miles the day before at quite a pace (the guy tends to cruise at about 90).

Now I don't really care about the DPF etc. as that will be the lease companies issue but I do pay for my own fuel so I was wondering- just how much juice does a car use when doing a DPF regen? Just a rough ball park figure would be great but are we talking about it being barely noticeable over a tank or does it drink like a fish when it is burning soot?
 
The wife's Zafira used 1/4 of a gallon to do a full regen which takes around 10-15 minutes, depending on usage mainly town driving this would be every 500-600 miles on a long run it would go 1000-1300 miles. One thing I noticed was that with super market fuel the regens were more frequent not a huge issue as the local Shell garage price matched the supermarkets.

Even driving at speed it would always countdown to a regen when monitoring the saturation levels with OPCOM, it was basically related to your average fuel consumption which makes sense. I don't think the Vauxhall system had any setup for a passive regen.
 
not sure on the differences in engine but my regular daily is an 2009 insignia with about 25k on it most of which have been done in the last 1.5 years have never ever seen it do a full regen
it does very few short runs though mostly the 60 mile round trip commute which probably makes a difference
 
I have a 2013 insignia (still the older shape MY2012) and never see forced regens, if driven properly (temperature and high enough RPM cruising) and the DPF is working correctly it should passively clean itself.
 
It will be doing regens you just won't be noticing them, I had a 2010 hire Insignia and it carried out a regen in the same manner as my old Zafira.

If the regen is on the motorway the only way to tell is looking at the instant fuel consumption dropping to approx half or the range going down quickly and then going back up once it is complete.
 
Sounds like this one is acting up then... great. This one does regular long trips every week so it shouldn't be having issues. Yeah this one is a pre facelift. I wouldn't be bothered about having to take it on if it wasn't for the sheer size of the thing and the lack of rear parking sensors.

It will have to live on the road as the mk2 Focus I have at the moment already sticks out into the road by about 6 inches when parked on the drive.
 
Dangerous Dave said:
It will be doing regens you just won't be noticing them, I had a 2010 hire Insignia and it carried out a regen in the same manner as my old Zafira.

If the regen is on the motorway the only way to tell is looking at the instant fuel consumption dropping to approx half or the range going down quickly and then going back up once it is complete.
Click to expand...

didnt know this assumed there was a dpf regen light as there was on my previous daily leon fr, you live and learn!
 
I think it tells you on the dash if it gets bad, otherwise it's relatively passive. Someone might be able to confirm this. I think another way to tell is you can see in the economy menu that the rear window is on regardless of the button setting (I believe I read this was to put more load on the engine to increase temperature).

All in all though, I never notice regeneration cycles.
 
Also had one as a hire car for about 4 weeks. I wouldn't want one without the parking sensors. The rear visibility really is poor but it's not a huge car once you get used to driving it.
 
The biggest issue with the size is that it is half a meter longer than the Focus which already overhangs my drive by half a foot :p It has a few dings in it already so I don't have to worry too much.
 
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