New Sharan & Adblue

[MadBaz]

Some more info from the horses mouth regarding SCR (adblue) systems on new VAG diesels.

 

 

VW Group allays fleet concerns as it uses AdBlue in 'clean up' of diesel vehicles

 

 

Volkswagen Group (VW) is believed to be the first car manufacturer to use SCR (Selective Catalytic Reduction) technology which requires diesel vehicles to use AdBlue to help reduce emissions.

 

The use of Adblue - a 17-litre auxillary tank containing the liquid is fitted in the left wheelhousing - prompted fears at the first Fleet Support Group Car Advisory Panel meeting that it was another vehicle maintenance issue that drivers and fleet decision-makers would have to manage. If the AdBlue tank runs dry then the vehicle will not start.

 

The VW Crafter van was the first group vehicle to be equipped with an AdBlue tank and now the VW Sharan, SEAT Alhambra and Audi Q7 are fitted with the emission control equipment, which is designed to clean up exhaust gases beyond the levels dictated by current Euro5 emission legislation.

 

However, with Euro6 emission rules due to come into force on September 1, 2014 for existing models and from January 1, 2015 for new model ranges - although some vehicles are already Euro6 compliant - VW says that AdBlue will be increasingly used on models to enable its engines to comply with the ever-tightening regulations.

 

Together, SCR and AdBlue, which is continuously sprayed into the exhaust gas, upstream of the catalytic converter, leads to a significant reduction in emissions of nitrogen oxide.

 

VW says that its vehicles use AdBlue at an average of 0.1 litre per 100 kilometres (62 miles).

 

However, a spokeswoman said: "The more economically a car is driven, the less AdBlue will be used. Typically the AdBlue tank fitted to the vehicle will be sufficient for driving between services without having to top up but this will be dependent upon driving style, vehicle loading and environmental conditions. We wouldn't foresee a problem for most fleets, providing the right information is made available to drivers."

 

She added: "AdBlue is not a standard service item, so fleets should ask for the tank to be topped up at service. Naturally, we would expect the costs involved to be incorporated into any SMR calculations."

 

Warnings on the vehicle instrument panel appear as the tank level runs low: the first appears at approximately 1,500 miles (2,400 kms) before the tank is calculated to be empty, and that warning is repeated every 62 miles (100 km) until an amber warning is displayed. That, accompanied by an acoustic warning, is repeated every 31 miles (50 km) until the tank is empty. A red warning is then displayed, at which point if the engine is stopped (or stalled), the car will not restart. That, says Volkswagen, is not a fault but a feature of the system. Whenever a warning appears on the dashboard, drivers and fleets should contact their repairer.

 

The spokeswoman said: "The best advice for drivers is: when the first refill instruction appears, drivers should call into their repairer next time they pass by to have the AdBlue tank refilled; if the second refill instruction appears, they are urged to go to their repairer without delay.

 

"But for the vast majority of drivers, topping up with AdBlue between scheduled services should not be necessary."

 

AdBlue, says VW, can be purchased at most fuel stations - a 1.89 litre top-up bottle costs £4.94 and it is also available in 10 litre bottles at a price of £11.58 - but the manufacturer says that the system fitted to a VW vehicle needs a special filling adaptor which protects both drivers and the vehicle from spillages so the refill should be undertaken at repairers.

 

All commercial vehicles - trucks, buses and industrial vehicles - above 7.5 tonnes manufactured after October 2006 that are fitted with SCR technology use AdBlue.

 

 

 

Clicky

Edited January 23, 2012 by MadBaz

[seatkid]

She added: "AdBlue is not a standard service item, so fleets should ask for the tank to be topped up at service. Naturally, we would expect the costs involved to be incorporated into any SMR calculations.

 

Warnings on the vehicle instrument panel appear as the tank level runs low: the first appears at approximately 1,500 miles (2,400 kms) before the tank is calculated to be empty, and that warning is repeated every 62 miles (100 km) until an amber warning is displayed. That, accompanied by an acoustic warning, is repeated every 31 miles (50 km) until the tank is empty. A red warning is then displayed, at which point if the engine is stopped (or stalled), the car will not restart. That, says Volkswagen, is not a fault but a feature of the system. Whenever a warning appears on the dashboard, drivers and fleets should contact their repairer.

 

The spokeswoman said: "The best advice for drivers is: when the first refill instruction appears, drivers should call into their repairer next time they pass by to have the AdBlue tank refilled; if the second refill instruction appears, they are urged to go to their repairer without delay.

 

But for the vast majority of drivers, topping up with AdBlue between scheduled services should not be necessary

 

AdBlue, says VW, can be purchased at most fuel stations - a 1.89 litre top-up bottle costs

[zorgman]

citroen c5 use similar stuff in a small tank (cant think of name) but its stupidly expensive so the fix is .... fill it with diesel the system is non the wiser and car runs as normal tho dont think it stops the car starting up. this must be most stupid idea ive heard of

[sparky Paul]

citroen c5 use similar stuff in a small tank (cant think of name) but its stupidly expensive so the fix is .... fill it with diesel the system is non the wiser and car runs as normal tho dont think it stops the car starting up. this must be most stupid idea ive heard of

 

The Peugeot/Citroen equivalent fluid is 'Eolys'. If the tank gets low, it puts the car in limp mode which can only be reset with the dealer diagnostic tool 'Lexia 3'.

[zorgman]

thats the stuff, we just filled it up with diesel,

[seatkid]

thats the stuff, we just filled it up with diesel,

So its spraying neat diesel into your cat/exhaust? :unsure: Wont that make the DPF get red hot or is the volume not enough? :unsure: - in any case I'm sure it wont do it any good. :blink:

[zorgman]

citroens pump it into the fuel system cant think on how often but something to do with fuel lid, the idea is to raise the dpf upto high temp to burn off the carbon caused by short runs. funny thing is i saw a garage near mear advertising adblue, now i know what it is. thought it was a new paraffin.(what what was the name of that paraffin off years ago blue something it was called)

[zorgman]

just came to me.

""bum bum bum esso blue"" sure that was it

[chrispb123456]

Reminisce http://www.youtube.com/results?search_query=boom+boom+boom+boom+esso+blue&oq=boom+boom+boom+boom+e&aq=1&aqi=g2&aql=&gs_sm=c&gs_upl=38686l62229l0l66041l29l24l0l6l6l0l218l2277l3.10.3l18l0

[seatkid]

Just looked it up, Eolys and Adblue are completely different things. Eolys is citreon/peugot/ford's solution to DPF (FAP) regeneration, which burns off the trapped diesel particulates (soot) in a controlled fashion. VAG and other manufacturers use a late injection technique to force unburnt diesel into the exhaust to acheive the same end, but without the need for an extra tank and injection system.

 

Adblue, on the other hand, is a Urea based system which is used to reduce Nox emissions, as required by upcoming Euro VI regulations. Already widely used in HGV engines to meet their Euro regs, it looks likely to be required on most if not all new diesel cars when Euro VI comes into force.

 

So citreon may potentially have both Eolys and Adblue in the future.

[MadBaz]

Just to point out euro 6 requires EGR and SCRhttp://www.fordgalaxy.org.uk/ford/public/style_emoticons/default/mad.gif

[Saif Rehman]

Just my tuppence worth :unsure:

 

I work in the public transport sector (Buses) and all new buses have to comply with this euro malarky. Been speaking to the engineering manager today and he says that he can get AdBlue for 32p per litre and buses generally only use between 3 - 5 litres every approximately 500 - 700miles. However, in comparison to a normal diesel cars, the engine in buses are around 8000cc and do 5-7mpg :unsure:

 

And (to add) there is a separate nozzle/filler for the AdBlue, so i cannot see any reason why maufacturers and forecourts have the facility where the owner can top-up when refuelling for normal diesel.

Edited January 26, 2012 by Saif Rehman

[zorgman]

funny about buses as my sons a driver and he says theres loadsa the stuff swilling around off the mechanics when they fill the tanks up.

wonderr iff it worth getting some to clean system out

[sparky Paul]

So citreon may potentially have both Eolys and Adblue in the future.

Looks like fun, I like all these complications.

 

A LPG conversion sounds better every day. :rolleyes:

Edited January 27, 2012 by sparky Paul