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Old 22-09-2012, 06:56 PM   #26
Elks
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Join Date: Dec 2006
Location: Melbourne
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Default Re: Diesel Particulate Filter Problems

A DPF or SCR ( add blue) are required to meet euro 5 emissions. Cars are e4. Heavy trucks are e5. A DPF for a heavy truck Cummins ISX or Detroit DD15, Both 15 litre heavy truck engines, is about 4~5k but can be had for about 1500 change over. These are good for 500,000 km. i would guess the passenger car versions would last the life of a car. They require a burn off and need to be at speed to do so to keep external muffler temps under control so your 'Italian tune' won't work.

As fir fuel, Australia switched to low sulphur diesel fuel in 2007 I think which is why we have a flood of high quality euro diesel cars in the last few years.

Few passenger cars run SCR. BlueTec benzes, not Blue Efficiency versions Mazda cx9 not sure what else.

Quote:
Originally Posted by CAMS290
DPF's and EGR's on diesels are a band aid slap stick way of meeting emission requirements, SCR is the best way to go, with the only inconvenience being finding a place that sells Ad Blue or the relatively minor extra expense involved.

DPF's are going to be a big headache in the future when these cars get older, and EGR's put unwanted extra heat back into the motor, and contaminates engine oil faster. At least with SCR you can tune the motors dirtier and then just after treat the exhaust.
EGR was adopted by must manufactures with varying degrees of pain, as most fleets found it was hard to get drivers to add diesel let alone a second substance but all are now moving to SCR based on the level of disaster the EGR ones were.

Euro6 is coming approx 2015 and all trucks will require both a DPF and SCR to meet that level of emission.

This stuff is coming so be careful.
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