With is better Diesel vs Gasoline?

[linkxsc]

The filtration systems are mostly catalytic in modern diesels, my new car for example needs 20 minutes at motorway speeds(60-70mph) once a month or I'm facing a £300 replacement (particulate filter) after a year. The urea injectors usually hold enough for ~18 months/35k miles and are refilled as part of the standard yearly/25k mile service.

I know that the larger dpfs can be refurbished a bit. Pull them off, spray them down with urea, and bake them for a bit. (Which is basically what should be happening when the car is running)

[marach]

I know that the larger dpfs can be refurbished a bit. Pull them off, spray them down with urea, and bake them for a bit. (Which is basically what should be happening when the car is running)

Yeah the bare minimum is 40mph for an hour(ish) which gives a very slow reaction and is the recommended way if you manage to go long enough to hit the warning light since runaway reactions with higher particulate counts are a risk (resulting in needing a new filter when the old one melts )

[xcorps]

When talking about one or the other being cleaner, it's always worth considering what the definition of clean is. Diesels were considered cleaner for a long time because they were held to the same standard as gasoline engines, which completely ignored particulates of a certain size that were the primary output of diesel engines. When it comes to places like california, I'd be interested to see if the regulations focus only on particulates that would settle, or if they focus on gasses as well. Also, do they regulate the replacement of the filtration systems? Diesels in particular have a problem where they can intake more fuel than they can burn, which is where you get the sooty black exhaust. It's form incomplete combustion, and it creates a whole lot of nasty stuff, including considerable particulate matter. That's why I ask about replacing the filters, since I would imagine that trying to capture all that particulate matter would actually clog up the filters within a couple years tops.

There are scr engines which inject a urea mixture into the exhaust which converts nox into nitrogen and water. This reduces emissions up to 90%, and when combined with particle filters, turbochargers, and magnetic treatment of inlet fuel can dramatically decrease emissions and increase efficiency.

[sal_vager]

The size of diesels has come up a few times but they are pretty small these, here's a diesel generator adapted for a slightly faster role

Edited February 4, 2015 by sal_vager