Discussion
Willy Nilly said:
RammyMP said:
My car has told me the adblue tank needs filling, done 8000 miles since I brilled the 20l tank.
Then put some more in it. My company vehicle has a 50 odd litre tank and will sup that dry in 3 days at full load.
750turbo said:
Trabi601 said:
EUbrainwashing said:
Every six months I have a new SEAT Alhambra 2.0TDI 182bhp.
Harsh. What have you done to deserve that?!....
But then if I wanted to nip about there is always a new Leon in the drive too with a gazillion bhp under-foot.
To clear up some points:
Ad blue is injected into the exhaust in quantities that are a function of NOx emissions, as measured by sensors in the exhaust. The urea is converted to ammonia which acts as a reductant for catalysing NOx.
DPFs are now effectively mandatory as it is not possible to achieve the PM and PN numbers without, whatever you do in the way of trading soot for NOx.
EGR was avoided for some trucks by allowing higher engine out NOx and dealing with it with AdBlue. I am not certain, but I suspect that this will become less feasible as emissions standards tighten up. Passenger cars will continue to require EGR systems (often two now, low and high pressure) to meet engine out NOx requirements.
Manufacturers would typically have engine out emissions targets which will consider the AdBlue consumption and SCR efficiency required to achieve tailpipe (legal) emissions targets. There is a trade off between fuel consumption and urea consumption, and obviously extending AdBlue refill intervals is a good goal.
Don’t piss in your AdBlue tank, it won’t work and it will cost money to sort out!
Ad blue is injected into the exhaust in quantities that are a function of NOx emissions, as measured by sensors in the exhaust. The urea is converted to ammonia which acts as a reductant for catalysing NOx.
DPFs are now effectively mandatory as it is not possible to achieve the PM and PN numbers without, whatever you do in the way of trading soot for NOx.
EGR was avoided for some trucks by allowing higher engine out NOx and dealing with it with AdBlue. I am not certain, but I suspect that this will become less feasible as emissions standards tighten up. Passenger cars will continue to require EGR systems (often two now, low and high pressure) to meet engine out NOx requirements.
Manufacturers would typically have engine out emissions targets which will consider the AdBlue consumption and SCR efficiency required to achieve tailpipe (legal) emissions targets. There is a trade off between fuel consumption and urea consumption, and obviously extending AdBlue refill intervals is a good goal.
Don’t piss in your AdBlue tank, it won’t work and it will cost money to sort out!
Just to mention I recently filled up my A4 at a motorway service station using the truck pumps, it was as easy as filling with diesel. it cost me 95p a litre which is still cheaper than buying it in a bottle with no messing about with filling tube etc.
I bet it would be even cheaper from a normal petrol station
I bet it would be even cheaper from a normal petrol station
gregpot2000 said:
Just to mention I recently filled up my A4 at a motorway service station using the truck pumps,
Was everything - nozzle etc - pretty clean? I gather you've got to be really careful not to get any debris etc in the Ad Blue system. I fill ours at home using a filling tube (as the filler is under the boot floor) and it's a right faff cleaning and flushing the tube.
apotts said:
69.9p from the pump in our local Shell. A grand total of £6.54 to fill up the wife's Tiguan.
Why are people talking about buying it from Halfords in bottles?
People are learning. And Halfords et al are being quick to jump onto an opportunity to diddle an uninformed marketplace! In a couple of years I doubt anyone will be buying it by the bottle, or the bottle prices will reduce substantially. At present I agree that using the pump is a no brainer. Why are people talking about buying it from Halfords in bottles?
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