Quote:
Originally Posted by euromodder
With all the after-treatment stuff gone, why not go with Biodiesel or a high BD blend ?
It'll make less soot.
It'll make "sizeable", flocking soot, not the < 2,5 µm microscopic soot that eventually DPFs produce and that goes even deeper in everyone's lungs.
Some reports state that with rapeseed esters, NOx goes down rather than up. Dunno if you can get RME or REE biodiesels locally ?
Another way to clean up your emissions is CNG blending.
Wether you can recoup the cost for that installation depends on how many miles you expect to run this truck - and wether you can get CNG locally.
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I don't have a good source for either biodiesel or CNG. CNG would take quite a bit of modification. I actually know quite a bit about this engine and biodiesel. I spent four years testing biodiesel in a 6.7L Cummins (with EGR). I does cut the soot enormously (90%+), however, the NOx increases are quite sizable (30-40% in some cases). RME is more prevalant in Europe--over here SME (soy) is more popular. The feedstock doesn't have much of an effect on NOx. It's more dependent on the engine. EGR engines typically have a much higher % increase in NOx from biodiesel. If you're interested I can send you my thesis--it's probably good for insomnia as well
I have thought about making my own biodiesel but, quite frankly, with only going through about 1 tank a month and not being able to use the bio in winter, it'd be quite a bit of hassle for not a lot of savings. That, and taking up space in my garage. At some point I thought about setting up a biodiesel "co-op" where several people would share a commons processor, but I've never gotten around to it.